What do you need to pay attention to when buying a power supply What you need to pay attention to wh

The quality of well-known brands can be guaranteed, don't try to be cheap, in fact, the power supply is a very important component for the computer.

It doesn't have to be a power supply issue, do you try changing the fan? It could also be a motherboard issue, and there are many factors.

There is a way, which is to buy a few issues of Volkswagen hardware and take a look!

Computer power supply is a device that converts 220V alternating current into direct current and supplies power to computer accessories such as CPU, motherboard, hard disk, memory module, graphics card, optical disc drive, etc., which is the hub of power supply for various parts of the computer and an important part of the computer. At present, most of the PC power supplies are switching power supplies. The following is a collection of issues that I need to pay attention to when buying a computer power supply, welcome to read.

1. Visual inspection. Since the heat sink plays a huge role in the case power supply, affecting the efficacy and life of the entire case power supply, it is necessary to carefully check whether the heat sink of the power supply is large enough. Another point is to check whether the cable of the power supply is thick enough, because the output current of the power supply is generally large, and a small resistance value will produce a large voltage drop loss.

2. Inspection of heat sink materials. From the perspective of heat sinks, the most famous brand power supplies generally use aluminum or copper heat sinks, and the heat sinks are thick. Although low-quality power supplies are also made of aluminum or copper, the heat sink is small and thin, and sometimes even iron is used as a heat sink, which is generally counterfeit and shoddy.

3. Do some simple experiments. The first way to do this is to simply test the load drop, and those with a smaller drop are of better quality. But during the test, it must not be done at 12 volts, -12 volts, so as not to burn out the power supply.

The second method is to touch the power supply shell with your hand when the power supply is not connected to the ground wire (there is no danger), there should be a numb hand shock inductance, because the power supply is powered on and its shell has about 110 volts of AC voltage. The third method is to listen to the sound of the power fan, which is small and uniform when the power supply is running at no load (the fan sound increases when the load is connected).

Fourth, if possible, open the power box, you can find that the most advanced power supply materials are exquisite, such as the use of square GBB capacitors in many places, the input filter capacitance value is generally greater than 470 microfarads, the output filter filter capacitance value is also relatively large, and the internal inductor capacitor filter network circuit is more, and there is a perfect. Overvoltage, current limit protection components, at the same time, the circuit board is clearly printed and the wiring is neat.

Judging from the feedback from the market, the sales of brand-name power supplies are generally good, such as the Great Wall, Galaxy, Parkson, Huntkey and so on. However, it is worth noting that there are many imitations and counterfeit products of brand-name power supplies, and of course, there are more profiteers, so we must not only keep our eyes open when purchasing, but also maintain a vigilant heart.

The power supply is not a performance piece of hardware, but it is about the performance of other hardware

Service life. And at present, the power supply of the regular brand is all.

The capacity is clearly marked with the rated output power of the power supply, and some power supplies are also marked with the peak output. We're going to look at the data for the rated output.

Suggestions: 1. Be sure to buy a regular brand power supply. The hidden dangers caused by counterfeit and shoddy power supplies far exceed the price you pay for buying a regular brand power supply.

Moreover, usually home computers are not particularly high because of their power consumption, and the power supply of the regular brand used is not very high. There is no need to save, and there is no need to save.

2. Choose the power supply size according to the reasonable configuration of your own computer. However, for many hardware novices, it is impossible to have an approximate data on the power consumption of their computer. So, to put it simply, the current mainstream hardware situation, a low-configuration computer, is to watch movies on the Internet, chat, do some documents, play some games, and choose the rated output of 350W; Medium configuration computer, graphics card and other hardware are relatively high, you can run large-scale 3D games with medium special effects, do 3D modeling and other work, and choose a rated output of 450W; High-configuration computers, which can play large-scale 3D games with high special effects, carry out large-scale 3D production, etc., usually require a power supply rated at more than 550W.

3. In the case of the same well-known brand, the output is the same, and you can choose the cheapest one.

ls, you mislead people, buy second-hand, don't drag the computer to blame lz must buy a big brand, a new electric specialty.

The source power supply is best used in the Great Wall Huntkey like this.

The brand of the genus. The power supply depends on the power, and let the person with the computer calculate for you how much the power consumption of the computer is at full load, such as 320W. Then with a 400W power supply.

And the wattage must be the rated wattage, don't buy the peak wattage.

The power supply should be matched with your own computer, especially like some graphics cards, and the power supply required should be specifically indicated.

Back to the computer itself, you need 250W, and the graphics card needs 350W, so you have to go according to the graphics card. And this number is not a true number, it is actually not that high, it is not clear why it is written like this.

A good power supply is very handy, and the weight in the hand is like half a brick.

If you don't know the needs of your computer and don't have the conditions to test it, it's best to take the machine and try it on the spot.

Again, don't buy a power supply from a small manufacturer, it is recommended to buy an old brand like Jinhetian and Century Star. The first two in China.

Buying power supply also needs to pay attention to formal channels, invoicing, tax money is not much, if there is a problem can not be replaced, the gain outweighs the loss.

First, overly cheap electricity.

Bai source do not buy, so.

Du's power supply is very capable of cutting corners, a dao-like, about 150 power back to the source, ordinary household answer is enough, under the premise of no overclocking. Second, the brand is also very important, Huntkey, Xingu, Jin Great Wall, Quanhan, Foxconn, Xianma, if you have the conditions, you can consider the TT brand, enthusiasts know that these brands are still good. Of course, a good power supply is not cheap, third, weigh the weight, generally good power supply due to the workmanship are relatively large, of course, the weight will be a little heavier, fourth:

The power of the power supply, generally buy the power supply and the 300W power supply you said is not the actual power, the actual power of the 300W power supply is generally only more than 250 points, there is no 300W, so ask clearly when buying, what is the actual power, it is best to let the seller of the power supply write down a note for you, maybe it will be useful in the future,

Just spend 30 yuan for a second-hand one...

What you should pay attention to when changing the power supply is the power consumption of your own computer, and then the standard power consumption of the power supply, and the brand of the power supply. So pay attention.