Buy a power supply What to look at, to see the power?

The first power supply is to look at the brand, and the second is to look at the power.

Why not be the first to look at the power, because there is a problem of false standards and materials, such as an unknown brand logo is rated at 400w, in fact, he is likely not to even be 300w, and the possibility of a big brand is much smaller, he will not smash his own signboard!

In addition, the importance of power should be mentioned, for example, the power consumption of the computer you configure is 300W (this power consumption calculator is everywhere on the Internet), you have to equip him with a power supply rated at least 400W, the power supply is not enough, a power supply you use 70% of him is about the same, you have to leave him some margin!

When buying a power supply, you must see his power clearly, whether the nameplate is rated or maximum, and the rated power is the most important parameter! The maximum power is only the amount of power he can provide in an instant, and it can't be sustained, so pay attention to this!

A silent power supply with a 12cm fan will provide you with a low-noise environment, and of course, the use environment will work with the other fans in the case!

See whether the power supply has passed the 80PLUS certification, whether it is active PFC, the conversion rate is improved, such a power supply is more energy-efficient, of course, it is more expensive, but long-term use is still accounting!

Correct the upstairs, according to the law of conservation of energy, the high-power power supply will not be more power-consuming, but calculated according to the power consumption of your host, (power consumption is only related to the accessories in your machine, and has nothing to do with the power supply), when the load of a power supply is half of its rated power, the energy conversion efficiency is relatively high, and it is more power-saving!

The chassis is not very well understood, generally a 2,300 chassis will do!

The power supply first looks at the brand.

At the high end, you can buy Haiyun, Corsair, and Anname.

The mid-range can be bought in some models of Antec and Cooler.

At the bottom end, you can consider the Great Wall TT Cooler, and there are a few other models.

Generally speaking, about 1w a dollar is more reliable, less than 1w 5 cents, the power supply may be more scummy.

The higher the power, the higher the ** per watt For example, a 300-watt power supply may be about 200 pieces.

But a 1000-watt power supply of 700 yuan is definitely a cat.

And then, according to the current development, look at the output of 12V, remember to look at the combined output, at the same power, the larger the output of 12V, the better, the same 400 watts, one 12V output 300 watts, one output 350 watts, and it must be the latter one that is slightly better.

Next, look at the interface, the previous power supply D port has a lot of ports, but there are only a few SATA ports, and now SATA devices have an absolute advantage, so SATA ports should be a little more.

Then look at some certifications, EPS12V, A, 80plus, etc.

Let's talk about whether 80plus has this certification** can be much worse, but it may not be a good power supply after that.

Because the environment when you pass the certification is different from the environment you use.

And then ... Look at whether the appearance is good-looking, whether the line is long enough, and whether there is a snakeskin net or something, depending on personal preference, and**.

First, according to your motherboard, etc., look at the power consumption, and look at the power supply, not too much. In order to save power, the second noise measurement, it is not good if it is big, and the third depends on the parameters, the size of the fan.

Brand (quality + ** + warranty).

The model (mainly power) is enough for this.

The main thing about buying a chassis is to choose the appearance, depending on what you like.

The other thing is workmanship. The steel plate should be thicker and the corners should be treated well (this is very important).

Many times I installed it for others, and halfway through the installation, I found that there was blood everywhere...

It turned out that the chassis accidentally bit me.

The power supply looks at the power and the brand looks at the 80plus, and the chassis looks at the heat dissipation, workmanship, and brand.

Quality, brand, power, reputation!

How to check the power of your computer's main computer:

1. On the power supply shell in the computer chassis, there is a corresponding sticker logo, and the corresponding input power will be marked on the logo.

2. If you know the power supply model configured on your computer, you can also check the power of the power supply according to the power supply brand and model.

Power supply purchase tips:

1. When choosing a power supply, the most important thing is, of course, the output power of the power supply. The most basic thing about a qualified power supply is the output power that can meet the needs of the computer, that is, the rated power must meet the demand.

2. Pay attention to the output cable of the power supply. First of all, in terms of interface configuration, the interface configuration should have sufficient articulation cavity port types. For example, the power supply interface of the graphics card is a 6 6+2pin interface, if the user needs to use a graphics card with independent power supply, he needs to choose the interface that is sufficient for use according to his own needs.

Although the lack of interface can be solved by converting cables, the use of conversion cables contains certain safety risks.

3. The cable length of the power supply should meet the requirements. Mainly for the back of the cable, the highest requirement for the length is the CPU power supply cable, if for the ordinary tower chassis, the CPU power supply cable needs to reach 50cm, in order to meet the back wiring.

4. The authenticity of the power supply can be identified by the nameplate of the power supply, when choosing the power supply, we must learn to distinguish the authenticity, if you accidentally buy a fake and shoddy power supply, not only can not meet the stable power supply demand, but also may damage other hardware, resulting in greater losses. **The nameplate of the power supply needs to be clearly written, and the logo can completely mark the rated power, output current, certification information and other relevant information.

5. Anti-counterfeiting labels are also an important basis for identifying authenticity. In order to maintain their product image, many brand power supplies will establish an anti-counterfeiting system with anti-counterfeiting labels. You can check through SMS, **, Internet and other ways to identify the authenticity.

6. The weight of the history can also check the authenticity of the power supply. Under normal circumstances, the power supply of Yuansong *** will not cut corners due to its excellent workmanship, and the weight is much heavier than that of inferior power supply. However, it is not excluded that some of the same power supplies may not weigh much.

Therefore, the accuracy of such a measurement standard is not high, and it cannot be used as the main basis for judging the authenticity, but can only be used as an auxiliary reference.

There are several steps to check the power supply power of your computer's main computer:

1. Open the main cover (side) of the desktop, and you can see an iron box in the upper left corner. This iron box is a desktop power supply, and the box is pasted with the corresponding parameter table, and we can clearly see that the maximum output power is 400W.

2. The maximum output power is 400W, which is actually greater than the rated power of the computer, and the maximum output power selling rate only means that the power consumption of the computer must not exceed the maximum of 400W, once this limit is exceeded, the computer will cause damage. The amount of power is calculated from the parameters on the power box.

3. The ** parameters of the desktop power supply are different, and the rated power calculation method of the power supply is different: for example, the calculation formula of ATX is 5V output voltage * 10 = rated power. Another example is how to calculate ATX 12V

5V output voltage + 4) x10 = rated power.

Hello, it is a pleasure to serve you and give you the following answer: No. The power of the power supply is determined by the total power consumption of the computer system, if the power supply is too large, it will cause the computer system to be overloaded, which will affect the normal operation of the computer.

Workaround:1First of all, the power supply should be selected based on the total power consumption of the computer system, not the power of the power supply.

2.Second, the power supply should be selected based on the total power consumption of the computer system, not the power of the power supply. 3.

Finally, the power supply should be selected based on the total power consumption of the computer system, rather than the power of the power supply. Personal experience: When choosing the hidden power supply, it should be selected according to the total power consumption of the computer system, rather than according to the power of the power supply, which can avoid overloading the computer system and ensure the normal operation of the computer.