Foxconn A55A - a full-size motherboard for AMD LIan

As it is known, is itself a platform for AMD LIano desktop market is somewhat ambiguous. Allowing AMD strengthened the position of the mobile computing market, in the field of desktop platform looked not so interesting, and marketers need to think it was good positioning. Imposing LIano as an alternative to high-end systems, including targeted at enthusiasts and would be clearly erroneous, because in computer processor speeds corresponding uniquely yield the same Athlon II. Power LIano is in high integration and, in particular, is quite a powerful graphics engine, but not the overall level of performance.For the most part, even A75 chipset looks a little odd with its support for SATA 6Gb / s and USB 3.0. After all, if the protection USB 3.0 could still be said that the average cost of the respective portable hard drive is not much different from the versions with USB 2.0, is about SSD, and you only need a SATA 6Gb / s, can not be said. Here we deliberately turn a blind eye to the situation with hard disks, for it is clearly temporary. In a few months, and again at the price of the cheapest SSD capacity of about 30 GB hard drive will be available in volume in a few TB. And if the existence of the A75 is still possible to justify the future in mind and the way to meet the specific needs of users, the practice of revision of the same group A55 extra controller looks weird.Respectively, and the release of the "charged" and the rich to pay for the platform devoid of any meaning. Expensive fees for inexpensive platform - is not nonsense? However, many manufacturers are apparently not without the efforts of marketers did not hesitate to step on this rake.In this respect the company's decision not to release Foxconn products such strange looks logical and may even be regarded as a case of the victory of common sense over marketing. Assortment of motherboards Foxconn AMD platform looks good modest and represented by a pair of solutions based on the A75 chipset and symmetrical deuce on FCH A55. Differentiation in pairs is performed primarily by the form factor. As for home users, the difference in the cost of a full-size and compact ATH micro ATX motherboard with a similar level of functionality is not critical, many of them are willing to agree to the additional charge for the opportunity to have a reserve of several slots for additional devices. Relevant decision of Foxconn A55 chipset is the product Foxconn A55A.Technical characteristicsFoxconn quite reasonably decided not nashpigovyvat their products for AMD LIano additional features, thus unnecessarily increasing the cost of the system, which by definition must be available, and leave it at the level of the chipset. Motherboard Foxconn A55A, of course, is no exception, so it is due to the functional basic features FCH A55 and the platform.Of additional chips required only for granted network controller and audio codec. To be the first grade was selected chip Realtek RTL 8112B, and the task of working with the sound has been assigned to a relatively simple, but functional six-HDA-codec ALC662.Design and layoutThe appearance and layout of the motherboard Foxconn A55A as two peas similar to FoxconnA75A.This is no accident. The above products are clearly share the same PCB design. So manufacturer optimizes production costs, what, given the status as the largest Foxconn OEM-Executive orders with strong brands, its staff certainly understands. However, given the difference in the functional FCH AMD A55 and A75, and not get involved in the integration of additional chips, this has all the prerequisites. The chips are very similar to the conclusions of the organization, so the ports SATA motherboard Foxconn A55A, given the full mechanical and electrical compatibility, operating with a capacity of 3 instead of 6Gb / s, the same as the Foxconn A75A. USB 3.0 ports, in turn, simply soldered to set aside for these places. As a result, both the boards were designed at a time and can be made on the same equipment, and on individual transactions, even without a minimum reconfiguration.The fact that the form factor of the mainboard Foxconn A55A adheres to the ATX, in combination with the single-chip design, AMD A55 FCH, allowed to place any item on the board quite freely. All ports and connectors, which can be connected to any power and signal cables or cables are placed along the edges of the PCB, which facilitates accurate installation and subsequent maintenance of the system.Voltage regulator looks classic and has a four-organization of the management, built on a PWM controller, Intersil ISL6328.Used electronic components is also quite timeless classics. This conventional MOSFETs, equipped buildings ferrite chokes and polymer aluminum capacitors. Any additional cooling MOSFET for obvious reasons is not provided. The task of disposal and heat dissipation from a single chip AMD A55 FCH was assigned to enough clearance silumin radiator black.Recall that moved into the central processing unit, or as it is now called AMD - APU (All Processing Unit), the bus controller PCI Express 2.0 provides 16 lines to connect the video card and 4 lines for high-speed devices. While another 4 PCI Express 2.0 lanes for high peripheral implemented FCH A55. Almost all motherboard manufacturers "seized" for an additional four lines in the APU and took second place slot PCIe x16 dimension wherever falling, even on the Boards micro ATX. Foxconn developers the hysteria wisely bypassed, so the surface A55A there is only one, but it is a full slot for graphics cards PCI Express 2.0 x16, and the remaining space was given to a pair of PCI Express 2.0 x1 and three PCI, allowing retrofitted board with everything, a set of additional devices.Panel inputs-outputs of the board may be called well-equipped, but not without reservations. The fact that the micro ATX board revision - Foxconn A55M, besides video outputs D-Sub and DVI-D, are also equipped with HDMI, while the panel Foxconn A55A it, alas, no. Obviously, this rate is made to support output to an external video card and wish to obtain a ready platform for media center company logically suggests using a compact version of Foxconn A55M.Otherwise for I / O-panel Foxconn A55A everything looks thoughtfully. Here are six connectors USB 2.0, three analog 3.5 mm audio output, optical SPDIF, Network RG-45 coaxial and PS / 2.Package and AccessoriesLook for anything unusual or interesting in the scope of delivery and packaging motherboard Foxconn A55A, right, not worth it. For all the interesting and unusual usually have to pay extra, sometimes a little too much, and the benefits of a variety of advanced kits do not always have.A simple cardboard box, a pair of high-quality SATA signal loops with snaps, CD with drivers and documentation - this is exactly what we need.BIOS Setup and OverclockingAs a system that controls all the devices of the motherboard Foxconn A55A low, stands Aptio - new BIOS Corporation AMI, based on the specifications of UEFI. However, in this case, such innovations UEFI, a graphical, mouse control, and other marketing ploys do not contain yet any practical use, were not involved. In principle, they are completely useless.Perhaps the only relevant for conventional PCs opportunity that brings with UEFI technology at this stage - is full support for hard drives larger than 2.2 TB. It also is the main advantage of innovations in the Foxconn A55A.In this case, the options required for a flexible organization and functioning of key components and aspects of the work of Foxconn A55A, are present in full. Absent only the necessary settings for overclocking the CPU and memory. Being completely absent. The only thing that can be deduced for the regular scope - is the power supply modules.However, the acceleration on the motherboard, which is designated as a basis for low-cost PCs, is not relevant. Previously, we were still able to talk about it in any case, for overclocking ability of the product can be seen as a integral index workmanship, although poor results could also be due simply to the lack of study of the functional. But with the arrival of first microarchitecture Intel Sandy Bridge, and then AMD LIano acceleration is no longer a bonus for literate users. Together with the key features of the platform Intel Sandy Bridge AMD LIano inherited the main problem acceleration - there is no base operating frequency in a rather wide range. Of course, the AMD this is not so bad, like Intel, but in general the problem is taking place. And if on the Intel platform indifferent to overclocking users can still find an outlet in a CPU with an unlocked multiplier, in the framework of AMD LIano does not. After all, as we know, until there are no AMD models for Socket FM1 with a fully unlocked multiplier.Thus, Foxconn, apparently, completely abandon the possibility of any manipulation of the acceleration on the platform AMD LIano. Another thing is that simple to choose the frequency of memory and adjust timings still would like to see even in the framework of this product. There are cases where this functionality is useful.Results ofMotherboard Foxconn A55A - is a full alternative for a system with an effective price-performance platform based on AMD LIano. Within its framework, there is no functional bias, flirting with the user in the form of overclocking and moddersky components, and there is only that required of similar products - High-quality implementation of the chipset and platform with a good base and a good design.

Overview mouse Logitech Performance Mouse MX

Time flows inexorably, and user requests on even the most seemingly simple devices are growing. Grows and the functionality of these devices. Remember how the evolving standard computer mouse. At first it was quite simple angular arms with a pair of buttons and a ball, but from year to year improved. An important step in the improvement of the refusal of the wire. But with the rejection of the wires have other problems: intermittent connectivity, small time operation from one set of batteries, huge by today's standards, the size of the receiver. All of these issues have been successfully resolved. On a single battery form factor AA mouse today can run for three years, the relationship is stable enough that you can safely move the cursor around the screen, while the mouse across the room. Receivers have evolved from archaic "jars" in the nano-receiver.However, all these years remained unresolved problem of the mouse on the glass. And it, oddly enough, more serious than it may seem at first glance. If you believe the polls, after reducing the size of the receiver to an absolute minimum, and longer battery life (and it is already done in the Logitech) is confident work on the glass remained among the main customer feedback. About 40% of them already have at their disposal a stylish table with a glass top, which put the rug somehow unpresentable - want to mouse rolled right on the glass. Logitech engineers managed to solve this problem: laser sensor Darkfield, applied in mice Logitech Performance Mouse MX, which we will tell you today, works on glass, according to the manufacturer, more than confident. Now check!Package and AccessoriesSince the today's mouse is not an easy or cheap, and its packaging is the appropriate status. This is a rather large box, decorated in the company colors Logitech. The front side, it also cover green, the other surfaces are black.Depicted on the cover inside the arm, and behind describes the key features. Descriptions are provided with illustrations. On the sides of the box is the description supplied in different languages.So, the following equipment:. Mouse;. receiver Logitech Unifying;. power cord micro-USB;. Charging AC Adapter;. Case for charger;. extension cable receiver;. User Guide;. CD-ROM with software;. NiMH battery capacity of 2000 mAh.The list of what is inside the package, it must be said, is impressive. It's nice that the manufacturer offers out of the box to use the battery, that will get rid of unnecessary costs on the purchase of batteries or the same battery.Another nice bonus is the cover for the battery charger is made of synthetic material and equipped with a zipper. In fact, it is placed not only the charger and all cables are available in the kit.Appearance and ergonomicsThe first thing is to start the story of our heroine - is size. They are not just great - they are very large! However, due to the form of thought-use Performance Mouse MX is very convenient.Housing arm is made of matte plastic gray and black. Besides the color scheme varies as material texture: a gray surface on which rests a hand, and the buttons slightly lumpy, black same elements are coated with soft-touch, and so soft that feels think this rubber.All along the bottom edge of the case is made of black glossy plastic. Element of this most decorative and generally not very noticeable. That much, it's silver accents encircling the left mouse button. It simulates the metal.The left side of the body, or more precisely, its shape even deserves a separate discussion. Here bend the thumb does not simply present form but is a full stop, which lays a finger, leaving an empty seat. In general, this solution is convenient.Interesting, but there is a small ledge on the right. According to the logic design, it should be provided between the little finger and ring finger. There he is, but it is recognized that this is again rather a design element.Look at the bottom. Here three moving legs, laser sensor, shifted to the left, the slider on-off switch and battery compartment. The lower part of the body is made from the usual matte black plastic.In front of the mouse is positioned micro-USB-connector, which is designed to connect the charger or enable the mouse to USB-port, which included a very long cable attached. But the inclusion of USB just means charging a battery cables on the PC to work as a wired mouse will not. However, no one forbids its use in this case as wireless.Unifying receiver is extremely small in size and is very convenient when working with a laptop. Placing last in the bag, the receiver can not be removed - it appears only half a centimeter. For a more reliable reception in case between the mouse and the USB-port of the PC have any impermeable barrier signal, complete present extension cable with which the receiver can be placed, for example, on a table at the monitor.All the twists and tilts the body make use of Logitech Performance Mouse MX exclusively right-handed. The quality of the materials and ergonomics at the height, use the mouse quite comfortable even for people with medium-sized hands, but ideally would form only a mouse in a large man's hand.Keys and indicatorsWe now consider the keys. About the usual right and left a lot to say. They are divided among themselves, but are the one with the top panel. The keys are large, pressing moderately elastic, clear and quiet. What you need.MicroGear scroll wheel is rather large. His silvery elements mimic metal, but the surface on which rests a finger, made a ribbed, but tough. Spin the wheel, however, is easy, it does not have much resistance, but does not rotate easily. Although the need to rotate easily it can get. For that, there is a small button located at scroller. One click - and the wheel starts to spin very easily. Moreover, if you take it with your finger, it may continue to rotate by inertia. This is convenient when scrolling large documents. Wheel return to "normal" mode could be one click. Of course, when you create a device does not forget about the function of horizontal scrolling. However, it should be noted that the work of the wheels to the right and to the left a bit vague.Three more buttons are located on the left side of the "rodent". These are the two keys to move between pages in the browser and key Zoom. These keys are located almost optimally convenient to use.Another key is, like the MX Revolution, were by the Performance MX, the palm of your thumb. By default, it acts as a switch between applications (Flip 3D in Windows Vista). After pressing it you see the windows of all open applications, and you can specify the cursor right.Stucco three-segment green LED indicator, located at the junction of the left side and "back" mouse, shows the level of battery charge.SoftwareLogitech SetPoint software version 4.80.103 should be set for the implementation of all the features of the mouse, because without it, some features just do not work.Consider an application in detail. In the first tab, you can remap the function keys. In the second set we find moving. The third tab contains options interact with the games. The fourth column adjustment wheel. The fifth tab contains information about the level of battery charge.The sixth tab communicate any receiver Unifying, the very name of which suggests that it can be used not only with the mouse, but also with other wireless input device Logitech. All you can connect up to six devices (which we hinted six-pointed star in the logo of technology), but it is important that they also support Unifying. Most new products in 2009 from the middle or upper price range already got this support.At the top of the program window is also present "Tools" tab. Here is the reference center, upgrade options and interactions with users of Logitech. You can also disable the system tray icon.In general, the Logitech SetPoint is very functional and easy to set up as a manipulator.InIn Logitech Performance Mouse MX liked. As we said, it is convenient to work with, despite the large size, although it is recognized that people with smaller hands, such as girls, this mouse is not quite suitable. On the other hand, all individually and is "try.""All-terrain" Darkfield laser sensor is impressive. What glossy tables, what glass? The mouse works even on the mirror! Though not as good as we would like, but it works.At the heart of Darkfield is a simple but effective principle dark field microscopy, which is used for decades in biology and medicine for the study of low-contrast objects. To implement it took to shift the light side, so that the laser "draws" the smallest heterogeneity glass microscopic defects of manufacture or cavities, and the sensor caught them on a dark background. Have the technology and a minor limitation - the glass should be no thinner than 4 mm, or information collected by the sensor is insufficient to position the cursor.On the range of the mouse no complaints. Within the communications room is kept confident, not to mention the normal use, say, a laptop computer when the mouse and receiver are placed a foot apart.All mouse functions work without problems, without causing complaints.The only thing that takes some getting used to, so it is shifted to the sensor. In our daily work is not uncomfortable, but if you need to spend a perfectly straight line, you may have some difficulty.FindingsIt's time to sum up. Impressions of the Logitech Performance Mouse MX weight, and they are all strictly positive. If we eliminate the subjectivity of the level (the author still prefer the mouse less), you can safely admit that the mouse is almost perfect. Everything works fine, everything in place, everything is convenient. Even on the software developers did their best.Considered manipulator evoked the idea that the mice have evolved from simple cable entry in complex high-tech devices with weight capacity and can meet the needs of the most demanding user. And it is a mouse and a Logitech Performance Mouse MX.

Test on-line UPS Socomec NRT-U3000

Today we look at a sufficiently powerful model on-line UPS Socomec series NETYS RT, the potential of which is 3000 VA. Recall that the 3000 VA is approximately equal to 2.1 kW, which allows the use of NRT-U3000 protection for small office, as the typical power consumption of a computer is about 200 ... 300 watts. Device still offers the convenience of use and multiple configuration options. Thus, the battery life in this case can be increased several times by installing additional battery packs in the amount of 4 pieces. If they wish to receive an unprecedented level of protection is possible installing extra charger, which can increase the number of modules, battery up to 12 pieces, the battery life with the tens of hours.Scope of supplySpeaking of packaging, just want to warn potential buyers. The fact that the size of the box impressive, the more weight, so it can only be transported in a car, and move together. Inside you will find a familiar feature:- UPS NRT-U3000;- Cable for connection to the power supply;- Two cables for consumers;- Interface cable RS-232;- Part of the team of plastic stand;- A set of metal brackets for rack mounting;- Paper and two disks.Appearance and designAppearance of this model is virtually no different from those already examined sample output 1.1 and 2.2 kVA. Housing is still metal, material thickness about 1 mm from the outside is covered with a practical, non-marking paint. Increase energy capacity, it only affects the external dimensions.Indoor Installation can be done in two ways: horizontally and vertically. Vertical version on the floor of the assembly requires a special attachment, which consists of two side poles and four feet. For installation just use four screws supplied. The standard width of attachment may vary in half. When set to minimum, it is the width of the UPS, this option is used when only one source. If the office has two similar bespereboynika or one of them works in the sum with an additional battery pack, they can be installed in a single mount, creating an array. Horizontal mounting option provides a standard rack. All necessary mounting the supplied is.Located in front plastic cover, in the center where you can see a small control panel. Here at your disposal are two buttons and several LEDs that indicate the operating mode and show basic information about the source of a percentage. It is very convenient when you can see the power of the connected load, instead of guessing, "pull" this UPS another computer or not. Plus, this has several features configuration and fault indication. For example, you can set the amplitude of the output voltage, and when a fault appears her light code that can be easily decrypted using the user's manual.Connectors to connect to the network and switching customers at the rear of the panel. Source has multiple outputs. Two of these groups are represented by standard plug to three pieces, each of which admits a maximum current of about 10 A. If the power of the consumer is too large, it is better to use the third output connector to 16 A. It is near universal connectors for the protection of network and telephone equipment and EPO jack for the emergency stop button. Local connection to PC via USB and RS-232. Small connector, closed the lid, is designed to connect an optional battery pack, which increases the battery life.Internal structure of the source is very similar to the previous model, the harp so it is not worth the attention. Boards are mounted very high quality, carefully laid wires. Radiators, which are attached to the power components, form a kind of tunnel, which is blown cooling system, built using a 80-mm fan. Battery six pieces, it is well known to us HR9-12 Company BB Battery. Producer allows any option to install the battery, because batteries contain positive and negative plates, separated by glass fiber separator soaked with electrolyte. Therefore, for any installation option life of the product is reduced.Practical testingLet's start with the fact that, in reading past reports on the testing of models and NRT-U1100 NRT-U2200, it is possible to form a view about the source under consideration today. In fact, he is deprived of any significant deficiencies and disadvantages of the available can be classified as secondary.The amplitude of the output voltage of the default is 230, the deviation from the nominal value shall not exceed ± 1 for all loads and modes. Recall that the output parameters can be configured for compliance with 230, 240, 200, 208 and 220 V. The battery life is acceptable. At half-load NRT-U3000 operates from battery about 14 minutes. If the load is 90% of maximum, the time is reduced to five minutes. It is easy to calculate that 90% of the 2.2 kW is more than enough to power six or seven standard office computers, which will comfortably complete the whole office. If the exit of the model will be connected to only a few machines, with the loss of power at the outlet they will be able to work more hours. If you want, even this time can be increased by using the optional battery pack.Reliability of the device does not cause absolutely no fear. Radiators power components are not heated above 70 degrees Celsius. In addition, each of the radiators has a separate temperature sensor, which adjusts the fan cooling system. The noise generated by the cooler, tangible and unpleasant. Metering special device Center 321 1 meter shows that the level is at around 45 dB (A). But here again we repeat that in the office, and even more so the server room is absolutely not important.ConclusionAs a result, we can say today that the tested UPS NRT-U3000 proved to be a source of high quality made with good electrical properties. Due to the use of the double conversion, it provides unprecedented protection and high battery life. Negative moment can be considered only increased noise, but on the other hand the device operates in the optimum thermal conditions.In general, the line NETYS RT offers a good choice of quality on-line solutions, depending on the capacity of the protected equipment.

Which gives high efficiency computer power supply?

The word "economy" is increasingly slips into the realities of modern life. Of course, this is not new, and a prudent approach to spending any natural resources has been and remains relevant at all times, however, agree that the modern economy is somewhat different, even compared to the events of twenty years ago during the era of such rapid developed socialism. And needless to say twenty years, when the problem becomes more urgent by the day. Its main cause is trite and hackneyed word - expensive. Expensive not because they so want to specified forces or someone gets a windfall, and expensive, because for all their technogenic human community still can not ignore the natural energy sources. It does not matter, we're talking about heat or electricity, it is still a determining element in this chain are hydrocarbons - oil and gas. Their reserves have so far can be considered limited, so higher prices of derivatives (fuel, heat, electricity) is inevitable. In simpler terms, period of apprenticeship that comes into the apartment to be "heavier" every year. And this process, unfortunately, is irreversible.

That is why the economy of resources is not just a tribute to fashion or directive, top-down, and the real way to improve their welfare. His in particular and the country as a whole. Today we want to highlight the issues of spending power, of course, not going into the banal details. The fact that when leaving the room to turn off the lights or energy-saving light bulb that pays for itself in a year, we know everything. Ironically, but such simple measures can achieve the lion's share of the economy. Even a simple calculation shows dozens of unspent percent. We will try to update more difficult time and look for ways to further the safety of your money when it seems everything has been done.

To do this, look in the direction of computer power supplies. Yes, the computer consumes a bit - an average of one to two as standard incandescent bulbs, so the home is not as important. But if the fleet as part of a single enterprise in the thousands? And within the country? Then even the savings of 5-10% against a 15% annual rise in prices of electricity look very substantial.

What power supply is preferred for the build?

Cheap - answer you, and will be twice wrong. First, the cheapest means unreliable, so it is the original risk. Second, the cheapest unit in most cases is a simplified and, most importantly, the outdated design. If we put aside all the talk about the load capacity, noise, etc., then you can state the fact that the efficiency of the solution is determined by only one parameter - the coefficient of performance (COP). What is it that each of us remember from school physics course, or at least know about. Efficiency - the ratio of power to give away spent. That is, having two different sources of power, we can shoot each, for example, 200 W, only that one will consume 250 watts from the wall outlet, and the second - 300. It is clear that the higher the ratio, the better. Ideally, it is 100%, but this efficiency is not there, just like a perpetual motion machine. In general, the requirements for the coefficient of performance defined not too hard, but to be considered a standard ATX power supply specification version 2.2, the minimum efficiency at half power should not be below 72%, and the entire range is not to fall to 65%. The same document (ATX12V Power Supply Design Guide) recommends that manufacturers strive to at least 80%, preferably more and exceed this figure. Unfortunately, it is not necessary, so the difference between the different sources can be significant. The situation is a bit aligns certification "80Plus", but it requires the manufacturer to unnecessary costs, so they prefer to use it only for the top models. But where the issue is particularly important - in large organizations - to build computers using the most that neither is low blocks. That's what we do a little research in order to know the actual characteristics and calculate the conditional benefit.

Testing the common models

So, it's time to look at some real-world examples in order to assess the situation in practice. We tried to pick up eight power units that belong to the middle price range, so that our study was more revealing. The reasons for this choice are obvious. First, expensive sources rarely used in standard computers. Second, we reject the ultradeshevyh solutions, because they are bad in every way, and excess savings is often unjustified.

Test 8 different power supplies. These are the three models of the company and five Chieftec - FSP. With the last clear. FSP'shki have become popular pets, as these sources have appeared on the market in those dashing time when half of the full range of computer stores can be subjected to harsh criticism. These solutions and still popular, but it is interesting to see how they look on the background of modern products. Chieftec - brand in our market although young but already famous. Two units with capacity 355 and 405 W fits into the default, while more senior CTG-500-80R is designed for individual sales.

Let's start with Poweman. The model of IP-S350T7-0 is a kind of cross between the classic and proven more or less modern circuitry. Inside the block is good, but nothing more. The manufacturer did not leave empty spaces on the board, but also a special "safety margin" is not laid. PFC is absent, and is used to cool the archaic 80 mm fan. Such a source of a priori will play on noise models with 120 timilimetrovym cooler when operating temperature will be worse. Model IP-S400T7-0 and IP-S450T7-0 is almost exactly the same. Increase in capacity achieved only through easy schema changes and installation of large heatsink. Maximum efficiency in the case of a 350-watt model is 81%, the average range - 78.5%. The result is modest by today's standards. For a 450-watt model coefficient also does not rise more than 81%, and the average is 78.7%. Average efficiency for IP-S400T7-0 is 78.9%, the peak he reaches 82%. 0

Models ATX350N and ATX-350PNR made for a similar scheme. The installation and implementation of e-filling special claims do not arise, but such a decision rather archaic. Well at least used to cool the big 120-mm fan. The remaining three units differ in capacity, but built on the same platform, but with different parameters, and more powerful semiconductors. More modern look only ATX-500PNR, as there are already equipped with an active equalizer output.

But even so, the block is designed to work with a network of 230 V. The maximum efficiency model ATX350N reaches only 80%, the average steady at 77.2%. For ATX-350PNR peak number is higher - 81% and the average is 77%. More powerful sources, unfortunately, did not boast impressive settings. ATX-450 for the maximum efficiency of 80%, the average - 78%. For ATX-450PNR generally 80% and 77.4%, respectively. The most advanced of the budget FSP provides the maximum efficiency of 82% and an average of - 78.9%. Summarizing, we can say that in the existing realities of these numbers can be called modest.



Consider solutions Chieftec. The two lower-end models, though set in the ordinary cases, but made quite interesting. Use modern scheme and active PFC. Senior block them too not deprived. Efficiency for the ANP-355A12 peak as high as 84%, and the average range is kept at 82.6%. For ANP-405A12 these figures are 84% and 82.5%, respectively. CTF-500-80P at the peak gives 85%, and an average of - 83.1%.



Preliminary results, we can state the following situation with the efficiency of computer power supplies. Maximum achieved to date efficiency for production models already exceeds 90%. But this is true only for the most expensive sources with FET output instead of diode arrays, or DC-DC converters. These sources are still very expensive, and the mass will not be soon. The maximum efficiency for a typical modern unit reaches a height of 85-86%, with luck - a little more. Sources is made for obsolete schemes and technologies, barely get to 80%. For example, the actual difference between the considered Chieftec FSP and the average is 5%.

As a result,

We can only state the fact that the use of modern power supplies for PCs can be considered one of the most effective measures to reduce energy consumption. The difference between inexpensive and modern solutions to older samples of 5% despite the fact that the price is at the same level. For example, comparing the tested sources Chieftec and FSP, we see that a higher conversion efficiency can save a great year for the organization rather notable amount. If we consider that only in our country annually produces about 150 thousand computers, even a 5% reduction in consumption leads to enormous savings. In addition, the high efficiency is advantageous not only from the economic point of view. Do not forget that it produces less heat. Therefore, these units less warm air and more reliable.

New stereo pair of F & D: test models R223, R224, and SPS-630

The history of the brand F & D (Fenda) in our market is complex and confusing. Speakers of this manufacturer have appeared among the first in our market. First under other names (Sven, Genius, JetBalance, Gemix, D-Sparrow, etc.), and in the middle two thousandth came under the name F & D (Fenda). This brand is synonymous with high quality and low cost products that are not related to the higher price range, but definitely worth the money. Long time F & D engineers have focused on multi-channel, bypassing the classical stereo, making lineup seemed incomplete. Not long ago, the situation has been corrected, and now we will show you right away with three new stereo pairs.

F & D R223

This speaker system is one of the new developments of the company. Speakers are beautiful in appearance, have a high specification and given the very reasonable price have a huge chance of success. The set is sold in a cardboard box medium size, in which except for the acoustics can find the signal cable and user manual.

Model R223 is a classic stereo pair, which clearly outgrown cheap speakers, but stopped short to the size of a full bookshelf speakers. In fact, we face a kind of transition option for those who want to get good sound, but do not spend a significant amount of money and save space on the desktop.

Shells are made of MDF 8 mm. On the outside is decorated with PVC material that mimics wood. Among the colors, you can list just three options: beech, black and cherry. The front panel is made of black and more massive. The thickness of the material here has already reached 12 mm. To make the columns more attractive appearance sawn edge at different angles, which inadvertently creates associations with this Hi-Fi. Yet this treatment requires a significant investment from the manufacturer, so to see it in the public sector is somewhat unusual. Removing the intricate grilles can view the installed speakers. And here we will have another important benefit. The level of technical solutions presented dynamic head easily be attributed to a higher price range. Obviously, the high-domed transducers with fabric diffuser in acoustics for $ 36 can be found very rarely. Midrange size of about 10 cm also looks quite confident. Its cone is made of the pulp, rubber surround, and the magnetic system is completely shielded.

The controls are located on a small plastic insert one side of the speakers. This solution has recently become very popular, because, on the one hand, the regulators "do not intervene" in appearance, but on the other - are always in one of the most comfortable positions. A set of handles more than the standard: volume, treble and bass. Next to them, you can see only LED and headphone jack. Again, the location is optimal, so the problem is offset by the lack of cable length of some models of headphones.

System connects to the computer with a stereo input RCA. Speakers are connected to each other normal cable that is attached to a passive speaker. Its length is not too large, but the problems with the placement of the table does not arise, because the body can be easily spread to any sane distance.

Testing and listening experience

So, let's first take a look at the AFC. It is seen that out of the dynamics applied to the nominal level only at the frequency of 100 Hz, phase inverter with set somewhat lower, so in practice the boundary frequency of the sound shifts of up to 60 Hz. Unevenness in the baseband does not exceed ± 5 dB, for this price range can be considered a very good result.

Tone controls work satisfactory. He seamlessly delivers deep blockage or lifting the low and high range. By the way, with the help of the characteristic can be given an even more attractive.

Subjective impression of sound speaker extremely positive, especially given the cost. The only downside may be considered a tangible background, which explained the densest distribution of electronics and transformer inside a small enclosure. Otherwise, the sound can only be happy. Power of 16 watts per channel can easily articulate even medium-sized room, with the shades of compression increases critical, and become visible only at maximum volume. Bass, of course, a little short, but it is transparent. Mid range is characterized by cold color and excellent detail. High frequencies without any other overtones. In general, this speaker can easily be used to solve problems is any sound, be it music, games or movies. In the office, it would be redundant, but just right for the home.

F & D R224

Even the index models can guess that the R223 and R224 are in the lineup at the adjacent positions. So it is, in fact, are two identical speakers, differing only in appearance. Stereo R224 is sold in a small cardboard box with a similar set of delivery: columns, signal cable, manual.

Acoustic Enclosures are made of MDF, decorated with black vinyl film. The side panels are decorative plates with beveled corners. Such a move is more profitable for several parameters at once. First, the system looks more presentable. Second, the increased stiffness of the body, which helps to get rid of the hull resonance and rattle.

The speakers are located on the front panel, and is used to protect them from the black speaker mesh fabric. Head is a high-domed emitter with fabric diffuser. Midrange cone has a hard pulp and soft rubber surround. This configuration is within the class may be the most successful, since the materials are inexpensive, but they are able to provide a good level of sound.

The controls are located on the R224 at the front of the speaker. As always, we have a three standard knob to adjust the volume and frequency balance, as well as an outlet for everyday headphones.

Reflex port on the rear panel, so we do not recommend setting the acoustics against a wall. The signal from the computer is running on a standard stereo input, and each column of the connecting cables are long enough.

The internal device is not much to complain about. All done enough budget, but no significant disadvantages. Amp is simple, and to implement it used the classic circuit UTC 2030 (analog TDA2030).

Testing and listening experience

In response is clear. Speaker goes to the nominal level at a frequency of 100 Hz, the very same lower boundary shifts slightly with the reflex to 60 Hz. Mids are cut more than in the previous case, that the spread of parameters to explain themselves heads.

Tone control works correctly, providing the necessary blockages and downs.

Subjective listening experience do not differ from the results of R223, as both pairs of speakers provide almost identical sound. Small difference can be caught only at a very detailed study. Overall, the sound is bright and saturated. Revealing detailed mids and high clean. As before, the lack of bass impact, but given the size of the applied speaker is quite acceptable. Negative moment can be considered only the presence of background, which can be heard at close range in the pauses between tracks.

F & D SPS-630

The model comes with almost identical set of delivery. The cardboard box can find two speakers, signal cable, connecting cable, and instructions.

Unlike the two above models already on the chassis SPS-630 made no design frills and have the most that on is a classic, and "adult" appearance. Used for the manufacture of MDF panels with thickness up to 9 mm, which is larger than in the models R223 and R224. From the outside, they are covered with decorative film. Again, there are three different finishes: beech, black, and cherry.

For installation on a table below each case there are four rubber feet. The speakers are hidden behind a rectangular grid of black. In this case, using all the same dynamic head, as before. High Frequency with fabric dome diffuser, mid - with a tight paper cone and rubber surround. The only difference is just fixing scheme. If before the heads were separated by some distance, but now they are set to overlap. From the point of view of no benefit in this, it's just a little bit prettier.

From a technical point of view, the model SPS-630 is different from their counterparts more rare acoustic design, as instead of the standard bass reflex tube used as a slot port, aimed at the listener. This allows for a wider range of settings, and most importantly - completely get rid of the jet noise.

The controls are located on the side panel of the active speaker. Here you can still see the three standard handles and exactly the same switch. In order to enable the column, it is necessary to turn and not push.

Inside acoustics done well. Walls reinforced with additional pieces of wooden material. Used to power a small transformer W-shaped plates. The amplifier is made in two TDA2030A chips. In general, a proven classic.

Testing and listening experience

Consider the graph. Obviously, in this case, the area of ​​the bottom middle of several vypyachena compared with the rest of the range. General flatness is ± 6 dB. It is also noticeable slight misalignment of the two speakers on the levels, but in practice it is not so important.

Tone control works a little differently. So it can provide a huge dam just mids, but the low rise is insignificant.

Practical listening shows that the change of the classic reflex Slit affected the sound quite drastically. Bass has more, but the sound was a bit more blurred and less detailed. Especially for the low-frequency range. High is still very good. Power enough for comfortable listening to music in any average-sized room.

Conclusion

Summing up, we can safely say that meeting new stereo pairs, F & D has been very enjoyable. Of course, the speaker had some limitations, but it is three times cheaper than the classic multimedia system, which is considered to be good. R223 and R224 models provide a powerful and brilliant sound, which for complete happiness only lacks bass support. In fact, they are one and the same technical solution, concluded by the housing, so the potential buyer can choose from a number of design decisions. Some gaps in stereo is only mentioned the presence of background, which is audible at close range in the pauses between listening. SPS-630 is more advanced from a technical point of view, as used herein is slotted bass reflex. This added some bass, but the sound will be a bit lost in the detail.

Columns F & D R223, R224, SPS-630 provided by ITC-M




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Acer company in the market of Belarus

March 9 in Minsk the partner conference of Acer, a distributor of computer technology in Belarus LLC "GiperAyTiTreyd" and dealers. Acer company represented Alexander Holovaty - Manager to work with partners from the Ukrainian office. Actually, the performance of Alexander and his answers to the questions of journalists and dealers occupied a large part of the event.Began with the presentation of the history of the company Acer. There were a few moments. The first of these - the transformation of Acer Computers in Acer Group, which took place with the purchase of Gateway and Packard Bell. Alexander noted that, despite the purchase of these companies and their brands have remained intact, and devices continue to be issued under these brands. For example, the brand Packard Bell has a very strong position in a number of European countries, and the device under this trademark in segments positioned middle-end and premium.There has also been out for second place in the world in terms of turnover of desktop and laptop computers in 2010. In Europe overall share Acer estimated at 19% (in Italy - 40%, 33-34% in Ukraine and 20% in the Czech Republic), which puts the company in first place in EMEA. According to Gross company ranks first in Russia and Germany. Of the market for a world scale it is worth noting one place for 3D-monitors and output for fifth place on the projectors.In talking about the crisis of time 2008-2009, Alexander said competent policy management, to predict the possible situation and take the right steps, allowing you to quickly recover and overtake Dell for world market share, taking second place behind HP. It is worth noting that Acer is a supplier of computer products for the 2010 Olympic Games in Vancouver and 2012 in London - all the computer equipment used Olympic officials will be provided Acer. The company also sponsors the Ferrari team in Formula 1 racing and the football club "Inter" (Milan).Acer is active in all segments of the market for portable computers. Series eMachines - the cheapest notebook models, the low price is the saving on secondary indicators, but not in such important characteristics as performance. Demonstrated the eMachines model 740, which at a price of $ 500 at retail in Ukraine has a processor Core i3, discrete GeForce GT 520 video and quite pleasant island-type keyboard. Soon eMachines models will be available in Belarus. Packard Bell is the top model in Europe, and Gateway - in Asia and the U.S.. Acer, as the brand name, is the most widely used medium segment.The presentation provided an update rule and netbooks, and notebooks. Acer does not delay the opportunity to provide users with latest technology in the shortest possible time. Special mention of the model Aspire 5745D - this laptop will come in two flavors: regular and 3D capable with polarizing glasses (included). 3D-version is only $ 100 more than the base.Alexander said that Acer is only a two-level system of distribution: manufacturer - distributor - dealer. This scheme allows you to receive and evaluate the most current information about the situation on the scale of each level. The presence of an active feedback in this scheme - one of the key factors that helped the company to successfully complete difficult crisis period. Acer will not work around this circuit, creating a direct supply chain, for example, a large public order. Such actions complicate the work of dealers in the field, which is disadvantageous in the long term.Acer appreciates the initiative of local partners. Dealers and distributors can rely both on financial and informational assistance to first-hand.It was impossible to ignore the Council of Ministers and the National Bank of Belarus № 240/5 "On the calculation of import of certain goods." Alexander said it was very strange decision that could seriously complicate the work in Belarus. At first glance, only one solution - to open a branch in Belarus Acer directly, import and customs clearing of goods on their own, and only then transfer to distribution. But to do that no one will.On the question of what to expect from the company in the field of mobile devices, Alexander said that in April, we can expect the two models on a ten tablets Android and Windows 7, a seven-inch model and one with a screen diagonal of 4.8 inches at a resolution of 1024x480 pixels in a metal building on the platform of Android. In mobile phones will be used mostly Android. Windows Phone 7 called for quite raw. Company with interest the MeeGo - and if Intel will provide a working platform, will the device from Acer. On MeeGo Acer expects as a possible alternative to the OS from Google, if for some reason the Android "zabuksuet."At the end, Alexander Holovaty awarded "Certified Authorized Distributor ACER» LLC "GiperAyTiTreyd." After that, Alexander and the representative of the "GiperAyTiTreyd" presented special gifts to distinguished dealers.

Video review Inno3D GeForce GTX 460 SE Green

Hardly anyone noticed that lately humanity greatly concerned with the preservation of the environment in an acceptable form of life, or simply the environment (often mistakenly referred to as the environment). At the level of the most narrow-minded noticeable progress in the automotive industry. This is more stringent emission standards forcing manufacturers to find a number of technically complex and often problematic for the consumer solutions from soot filters on diesel engine and finishing with a gradual transition to electric motors. Certainly, the changes occur in other areas, including IT. In contrast to the above mentioned car industry is all possible steps down to two factors - the reduction or elimination of highly hazardous substances in components and reduce their energy consumption. The first factor is usually governed by the directives of production and consumption, so the vast majority of users care about, but the second is important. It is fair to note that the original attention to power consumption of computer components from both the producers and the users are not born out of concern for the environment or the economy. The fact is that the vast majority of electricity consumed electronics translates into heat, which is necessary to avoid overheating dissipate. Thus, the increase in energy consumption Components inevitably entails increasing size and noise of the cooling systems, which seriously reduces their quality of consumer. It also is the primary cause of concern for the retention of power within acceptable limits. Recently, however, due to the fact that the performance of the PC for a long time and repeatedly surpassed the level needed for a comfortable run most household and office tasks, fashion has become a small, quiet and economical system.

In the field of graphics cards such market trends led to the development of integrated graphics processors built into the chipset first and then himself CPU. However, among the discrete solutions, we continually witness the appearance of a modification of standard models with reduced
power usually is indicated by the word "Green" ("Green"), which became synonymous with the semantic of "green." But miracles do not happen, and in most cases the appearance of the word, if it really means lower power versions, so that it runs slower than the standard model. And it is not always a bad thing. In certain cases, the "green" solutions by reducing the power, heat and noise, the performance level is close to a "hot, voracious and noisy" standard, may be the most suitable option. For example, when creating a notorious HTPC with an eye on not too resource intensive 3D-games.

In this review, we consider it a "green" card - GeForce GTX 460 SE Green Company InnoVISION Multimedia Limited (brand - Inno3D).

Technical characteristics

GeForce GTX 460 appeared a long time ago - in the summer of 2010, so their performance should be very familiar. First of all, remember that the original boosters have two versions - one equipped with a 768 MB, the other - 1024 MB standard memory GDDR5. Version with 1024 MB GDDR5 uses four 64-bit controllers, that is, a 256-bit bus, and has 32 blocks raster operations. In the modified GTX 460 768MB GDDR5 one controller is not involved, therefore, the tire has a bit 192 bit, which means that the card has only 24 ROPs. At the same time, both versions have 336 unified shader processors (in the nomenclature of NVIDIA - cores CUDA), 56 texture units, GPU in both operating at 675 MHz (1350 to the shader), and the video memory at 900 (3600) MHz.

Over time, however, appear to have accumulated quite a lot NVIDIA partially defective crystals, which have traditionally been put into circulation. Thus, the market appeared graphics card, the GPU is turned off one cluster SM, contains 48 CUDA cores and eight texture units. As a result, the GeForce GTX 460 SE with the suffix has only 288 of stream processors and 48 texture units.

Here, obviously, to prevent drastic difference in performance with the GeForce GTX 460 768 MB, modification GeForce GTX 460 SE 1024 MB has a 256-bit memory interface and 32 ROPs. At the same time, the frequency of the GPU and memory in a model with an index number of SE reduced.

As is known, the maximum power consumption of the GeForce GTX 460 768 MB is slightly lower than the GeForce GTX 460 1024 MB. Accelerator GeForce GTX 460 SE on this parameter corresponds to the conditional version with 768 MB. In turn, the GeForce GTX 460 SE Green InnoVISION of repeats of the reference GeForce GTX 460 SE.

Thus, guided by the original data, there is no objective reason to believe that the Inno3D GeForce GTX 460 SE Green can consume less power than ordinary GTX 460 768 MB. Perhaps we will find something for further inspection?

Design and cooling system

PCB design video card Inno3D GeForce GTX 460 SE Green is almost completely identical to the standard version of the GeForce GTX 460 SE. The only difference is the location of six-pin connector for the power supply and the fact that in this case there is only one slot, while on the reference GTX 460 SE are two.

The decision, to be honest, strange, because in itself elimination second connector does not reduce energy consumption, and this parameter of the card is 150 watts - the numbers, frankly, a rather big, so the second slot would not hurt. By the way, the pads and the corresponding track for the second connector on the board are present, and this is due to the fact that on the basis of the printed circuit board Inno3D produces a number of accelerators, including the overclocked versions of GeForce GTX 460 1024 MB.

Eight gigabit memory chip card total capacity of 1024 MB is connected to four 64-bit memory controller located on the GPU. In this case, the chips used Hynix H5GQ1H24AFR T0C rated at 1000 (4000) MHz. Given that the composition of the product Inno3D GeForce GTX 460 SE Green clocking their staff of 850 (3400) MHz, the "enlightened" people are guaranteed to speed up the memory at 150 MHz, not going beyond the denomination chips.

Pulse down converter voltage GPU is built on a three-phase circuit and is controlled by the PWM controller uP6204BJ production uPI Semiconductor Corp. The chip is able to work with a wide range of input voltages, which may be necessary when using low power and very high quality power supplies. However, the same can be attributed to almost any modern Buck Controller.

Simple synchronous voltage regulator chip memory controller running uP6161S14.

Both converters are used ordinary MOSFETs that, given the word "Green" in the title card looks a little strange. All the same keys with low-resistance source-drain channel (RDS (ON)), and hence the efficiency of this would have been much relevance.
Inductors also fall within the type, with all the disadvantages. In particular, at high load inductors produces a characteristic high-frequency whistle. In terms of the capacitors used on the map again, it's simple. Common polymer used aluminum containers that do not differ low series resistance.

Thus, the word "Green" in the name of the video card Inno3D GeForce GTX 460 SE Green may be considered advertising message and nothing more.

Panel video outputs Inno3D GeForce GTX 460 SE also alludes to the orientation of the budget, for one of the two outputs DVI-I has been replaced with D-Sub, used only old monitors, CRT, LCD, or the cheapest. And this at a time when DVI-I elementary transformed to D-Sub adapter with passive due to the presence of additional contacts in the connector carrying analog RGB-signal.

However, the vast majority of users is enough for one connector Dual Link DVI-I, and to connect the LCD and Plasma TV panels most suitable connector is present here HDMI.

Cooling system

Cooling system GPU card Inno3D GeForce GTX 460 SE Green differs from one version NVIDIA.

Radiator is made by pulling silumin workpiece through a die followed by cutting. This is the most inexpensive, but quite effective type of construction for centuries used to cool chips with relatively low heat.

Blown radiator fan with an impeller diameter 72 mm. Blades ingenuous forms have a fairly steep angle of attack, providing a high level of performance. A side effect of this design of the impeller is that much of the air is forced not parallel (to the fins), and perpendicular to the axis of rotation, but in this case it turned into an advantage. Top cover protection system, directing "parasitic" threads of memory chips and power elements of power converter, providing them with some air cooling.

Rotational speed fan depends on the temperature of the GPU and regulated circuit on the PCB card by PWM.
Operation and acceleration

The noise of the cooling system video card Inno3D GeForce GTX 460 SE Green, running at idle or low 2D-load by reducing the frequency can be called acceptable. Outdoor bench working fan is clearly audible, but in a closed system unit and separate it from the general background of the running system is unlikely to succeed. GPU die temperature while hovering around 40 ° C. With increasing load and heating the GPU fan speed and grow, and with them the noise. However, even with the most severe operating conditions, the GPU temperature and fan speed to quickly stabilize at 78 ° C and 2500 rev / s. The fan's noise is noticeable, but not beyond a comfortable level.

Certainly, the accelerator GeForce GTX 460 SE is hardly seen as a card purchased with a view to further overclocking - after missing the core CUDA and texture units no acceleration can not be returned. However, overclocking ability Inno3D GeForce GTX 460 SE Green still of some interest. As it turned out, the card has a remarkable overclocking potential. Opportunities for overclocking the memory through the use of GDDR5 chips with high nominal frequency was quite high. The maximum frequency of 4080 MHz GDDR5 was, well above the nominal value of 3400 MHz. Conquering the GPU at 726 MHz at which its maximum temperature has increased by only 2 ° C.

Such acceleration allowed Inno3D GeForce GTX 460 SE Green to estimate 13,276 GPU Score in 3D Mark Vantage package with presets Perfomance. This is much higher than 12,528 points, which demonstrates the NVIDIA GeForce GTX 460 1024 MB (hereinafter described on the test bench).

Testbed

Testing video performance in a subsequent set of equipment:

. Processor: Intel Core i7 920 (2667 @ 3700 MHz), LGA 1366;
. Cooler: CoolerMaster Hyper N520, 2x92 mm fan, 1800 rpm;
. Mainboard: DFI LANPARTY DK X58-T3eH6, Intel X58 Express;
. RAM: 3x2 GB, Kingston HyperX KHX2000C9D3T1K3/6GX, 1850 MHz, 8-8-8-20 CR1;
. HDD: Samsung 160 GB, 7200 rpm, 16 MB;
. PSU: FLOSTON 560 W (LXPW560W);
. Chassis: Cooler Master Test Bench V 1.0.

Used in the test bench CPU Intel Core i7 920 for Socket LGA 1366 was dispersed with regular frequency 2667 to 3700 MHz, which is the highest possible stability of the used copy. In this triple-channel memory kit Kingston HyperX KHX2000C9D3T1K3/6GX operated at a frequency of 1850 MHz with timings of 8-8-8-25 CR1.