Weak current College】 【purchase power of mistakes.

They say that the power is in the heart of the computer, its quality is good or bad is particularly important since there was no electricity, and other accessories can not run, much less performance is good or bad. In fact the power supply and other computer accessories selection is there are essential differences, maybe the CPU and video card you can buy your points as possible in order to get higher performance. But power even if the price is more expensive, higher output power, but may not be able to meet their own needs. This is why? this mechanism with the power of work and design standards are different from other computer accessories. The following author to talk about buying power is prone to mistakes of the hope to everyone to help.

Myth 1: only look at the power does not see power supply specifications

From the earliest version of the specification, ATX1.1 to today's version of the specification, already ATX12V2.3 has been updated for several generations. During this period both voltage classification, power output, interface types, or energy-saving design, etc., are a great improvement and change. What's that changing driving power supply specifications? in fact it is because of computer accessories, thus leading to escalating power constantly changed. As the framework and core CPU frequency increase, leading to an increase in the number of power consumption and heat output increases. Display chip integration to improve, plus operating frequency increases, leading to increased power consumption and power consumption.

Occurs whenever the hardware power changed later, Intel will launch a new power supply specifications to meet the needs of mainstream platform power supply. Obviously, the latest mainstream platforms need to match the latest specification of power. Because the computer configuration that the all-powerful will vary with the diversity and balance characteristics. Therefore need users rely on rich power knowledge to be judged only by lamination characteristics of power itself is a good power supply.

With 300W power supply rated, from version to version ATX12V2.2 ATX12V2.3 various changes to the current output: + 12V2 from 13A to 9A, + 5V, + 3 .3V and + 12V1 output from 12A, 18A and 8A to 15A, 21A and 11A. This is designed to meet the current dual-core CPU power consumption reduction, and DX10 graphics and peripheral equipment power consumption rising demand.

It can be said that the power more suitable ATX12V2.3 version used to build the mainstream gaming platform. In contrast to purchase ATX12V2.2 Edition power, although the total output power will still be able to meet the needs of some mainstream platform, but CPU power supply is too high, causing the video to waste, and less than the power supply cannot be upgraded to more due to the high end video card, so it is not suitable for the formation of the current mainstream gaming platform.

Therefore remind players in purchase power, in addition to the power output, but also pay attention to could further power supply specifications, see more of their current output size fitting your needs is better. Generally speaking, dual + 12V power supply design, + 12V2 used to supply power to the CPU, + 12V1 used to supply power to the video card, while the + 5V/+ 3.3V for USB devices, hard drives, optical drives, fans, power supply light and other peripheral equipment.

Myth 2: passive PFC is obsolete, buy only selected Active PFC power supply

Many manufacturers and media publicity, many users began to come into contact with and understanding of the design of Active PFC, and Active PFC opposition prior to the already existing passive PFC. Perhaps it was the "active cooling is better than passive thermal", many users think that Active PFC design better than passive PFC design, therefore started to purchase only design with Active PFC power supplies. It also considers that Active PFC design is a symbol of high-quality power supply, and saw some high power still uses passive PFC design will scoff.

Passive PFC design, PFC full name in English as "PowerFactorCorrection", meaning "PFC". Its main function is to filter out data from the external network of noise disturbance, the second is to prevent the computer itself resulting clutter interference power grid. You can effectively protect computer accessories safety, reduce rework rate. At the same time itself will relate to loss and conversion efficiency problems, this is what we usually see on Active PFC design can bring high conversion efficiency and power factor describes the sources.

Active PFC design, understand the meaning of PFC and PFC circuit function, you can see that PFC circuit is very important, and should not be overlooked. So whether Active PFC will certainly better than passive PFC? the answer is not necessarily. Although Active PFC design in conversion efficiency and power factor, leading to the design of passive PFC, but costs more, but stability and useful life and passive PFC design. In theory, using passive PFC power supply design than with Active PFC design power cheaper and more durable. Clearly on the practical, passive PFC design still but, of course, cannot be used as a division of the high standard of low-end power.

Myth 3: interface better

Often hear many of my friends complain about their own power interface is too small, and consequently hinder the normal use, the large increases complained. Therefore determined the future buy power must be selected interface more power, easy of late so caught trafficking road. Many businesses to huyou consumers to purchase a cow power, excuse is that the more the interface supports accessories, more cost-effective. Because of this line with normal logic inference with a high level of anonymity, so many users ignore total power output of the trafficking.

In fact the number to the power connector of the power output to match, is adequate. Some high-quality power supply for security reasons, sometimes in the interface aspects of design is too conservative. If kangshu IP430 power rating of up to, but did not provide 380W 6pinPCIE-powered interface to link up with high-end graphics also need another conversion line, brought inconvenience. Although this design is very secure, it is recommended that manufacturers can make reasonable improvement. On the contrary ifTotal power output is not very high, even with multiple PCIE power connectors, nor is it can support SLI and Crossfire platform.

So it is recommended that the number of members, rationally interface usually rated power 300W and above will bring PCIE power connectors, as CPU power, it is best to 20 + 4pin main power supply and power supply tie-in 4pin aided, if you have a secondary power supply interface 8pin better. As for big 4pin connector and SATA power connector of the quantity and the rated power supply 350W and following is about 6-8, SATA power connector number depending on the power supply design, players need to choose to buy.

Summary:

From the above analysis which can be seen, the power of purchase not just brand, at work, see power so simple, you need to know more of the parameters and functions. This is not just to prevent trafficking places, or for a very good application to meet their own needs. On the power of knowledge and understanding of, or from a very large extent, reflect a level of DIY players zanji high or low. If you do not understand the power-related knowledge that he is a master, apparently also DIY somewhat premature. If you want to further enhance your level, it may be more zanji understand the power of selection techniques, and also will let you do more with less, receive the miraculous.