Power supply can not only look at the power

We know that the rated power of the small power supply is difficult to meet the system demand, light is the crash frequently, heavy can not boot or even damage the hardware. Because of this obvious consequence, consumers often pay attention to power supply only when they buy power, ignoring other aspects.

In fact, now buy power has not been a single focus on the rated power, but also should be in the power of the mute, energy-saving more to spend some kung fu, perhaps see this you have begun to be confused, the rated power is expressed in numbers, at a glance, and other issues we should pay attention to? Don't worry, you can use the following method to get your power out of the rated Learn more about power.

　Mute--look at the power supply fan

In general, the power supply mute effect depends on the fan size used, should pay attention to the purchase of 12cm or 14cm large diameter fan power supply, because the large diameter of the fan can be a lower speed to obtain the same large amount of air volume, so as to take into account the demand for quiet and cooling.

　　Output capability--look at the power supply standard

We know that Intel has a series of design recommendations and reference specifications for computer power supplies, which is the ATX12V standard, which defines the physical dimensions of power supplies, thermal requirements, configuration of various connectors, electrical signal latency, etc., which are now widely used as non-mandatory power standards. That being the case, we can use this standard to simply judge the power output.

The ATX12V specification has been changing with the development of technology and has recently undergone 4 updates, respectively, of earlier ATX12V 1.3 and 2.0, the current mainstream of atx12v 2.2, and the ATX12V 2.3 Edition released earlier this year. The older versions are naturally not considered, but who better to choose between versions 2.2 and 2.3? Let's see what the difference is.

The difference between the ATX12V 2.2 and the 2.3 standard is mainly the power output power of the new distribution, ATX12V 2.3 Standard is taken into account the core series processor power consumption is low, and graphics card on the increasing demand for power, so intel in this standard reduces the power supply to the processor + The power output of the 12v2 road increases the power output of the +12v1 road, which is powered by the graphics card. In addition, this version is based on the ATX12V 2.2 standard, which improves the regulation of conversion efficiency and increases the requirements for energy saving.

Although it is logically accepted that the new standard is better than the old one, it is not difficult to see through the above introduction Reduces the power to the processor in the 2.3 standard, although the processor's power consumption is getting lower in the current market situation, but if the power supply you choose is for an older processor, then a power supply that meets the 2.3 standard is likely to be problematic. In addition, since this standard has just been introduced soon, the current market to meet the standard of products far from the ATX12V 2.2 standards, so at present, or choose to meet the ATX12V 2.2 standard power supply appropriate.

　Energy-saving-see safety certification

Although in the above power standards, ATX12V 2.3 version than the 2.2 version of the conversion rate is high, theoretically more energy-efficient, but in fact, the power of the actual energy-saving capacity also depends on the different manufacturers and the use of raw materials and technology-

For energy-saving standards there are many, such as "microcomputer switching power supply energy-saving products certification technology requirements" and "Energy Star", which requires light load, typical load, full capacity of the minimum conversion efficiency of 72%, 77% and 75%, the latter's latest standard "Energy Star 4.0" and the current requirements of the most stringent 80plus standards, the power supply in light load, typical load and full capacity conversion efficiency of more than 80%, the purchase of such standards to meet the power supply can reduce unnecessary cost consumption. Although the price of such power supply is relatively high, long-term use can save considerable electricity.

　Summarize

Of course, in the power supply can be seen far more than we introduce these, but as long as we grasp the main contradiction of the problem, other problems will be solved. Purchase power before, in addition to the above mentioned power supply fans, power standards and security certification to do detailed understanding, but also according to their actual configuration of the machine to consider the corresponding products, such as the motherboard is the auxiliary power supply interface? Is it 4 stitches or 8 stitches? Does the video card require an external power supply with a 6-pin interface? What is the number of SATA power connectors for the hard drive or optical drive? In short, in the purchase of power should be equipped with the machine configuration to be aware of, so as to maximize the balance between the mute and energy saving.