Power consumption of the computer. How to know the power of the computer

The power consumption of the computer will be interesting not only when buying a new PSU or uninterruptible power supply. For economic reasons, many users are very interested in how much energy a personal computer takes over during operation. In this article, the user will be able to familiarize himself with all the methods for calculating the power of a computer.

computer power consumption

Grandfather's way

If we are talking about saving electricity, the power consumption of the computer turns out to be quite simple - you need to disconnect all household appliances from the electrical network, leaving only the personal computer on. After that, you need to record the initial readings of the electric meter and after one hour the final readings. The difference between the data and will be the power consumption of the computer.

However, to conduct this experiment, the user must knowthat the computer is at rest and under active load (for example, during a game) consumes different amounts of energy. Experts recommend within one hour to expose the computer to workload - to run a powerful game or a synthetic test to determine the performance of a video card. Thus, the maximum power consumption will be fixed, which in the future should be used in financial calculations.

how to know the power of the computer

About efficiency

The power supply of the computer is indicated on all devices on the market in the form of special markings. But customers should not be guided by it, since active power is important for computer components. Without going into physics, the user should know that in all power supplies there is a dissipated power - heat dissipation and cooling, losses in electrical circuits, and similar electrical leaks. In general, experts recommend that you take 20% of the declared power of the manufacturer of the power supply in order to get active power.

But if we are talking about such serious brands as Seasonic, Zalman, Thermaltake and similar devices in this gold category, then no additional calculations should be made when purchasing.The manufacturer takes into account all the loss of efficiency of the power supply and marks its product with real data. Judging by the reviews of many owners of elite power supplies, often the manufacturer’s data is also underestimated by 5-10%.

calculation of the power of the computer power supply

On the thumb track

There are many recommendations in the media for those who do not understand how to know the power of a computer. Experts advise to fully trust the seller of the store, which makes the purchase of a personal computer. After all, not a single sale of a computer is carried out during the day, and the seller knows exactly how much power the power supply unit needs to be installed. The office computer will have 300 W, the home PC for multimedia should be equipped with 400 W PSU, but the gaming PC will need 600 or more watts, depending on the configuration. And the seller will select the best brand, because he sold more than a thousand such devices, and there is not a single return.

But on the other hand, about which the buyer does not know at all, the vendors in the warehouse are “stuck” with power supplies that have long been discontinued and are not suitable for the official warranty of the manufacturer, they need to be urgently sold.The real calculation of the power supply of the computer power supply, naturally, no one will produce.

power supply of computer

Simple math

Why not take data from all components that are planned to be installed in a personal computer? After all, according to the standard, the manufacturer is obliged to label their equipment, indicating its real and maximum power consumption. The calculation of the power of the computer is quite realistic to produce in this way. Even cooling fans and chassis lights are marked with electricity consumption.

Problems in the calculations may arise from the buyer, if he purchases inexpensive Chinese products, which are often not labeled. Also, on some components, the manufacturer prefers not to indicate the maximum power consumption. As a result of the calculation, it becomes clear that there can be no talk of exact data. In any case, the result must be rounded up.

calculation of computer power

Official data

Many owners are more interested in how to find out the power of a computer without disassembling the case. This is quite realistic, and the accuracy of the data will be much higher.To do this, you need to refer to the data contained on the official website of the manufacturer of computer components. It is considered good form if the manufacturer specifies a complete list of data on his device, including power consumption, so the user will not be hard to find the necessary information. This method of calculating the power of the computer still requires time-consuming.

  1. First you need to know the full marking of the installed equipment. This can be done either by disassembling the computer, or using special programs such as Aida, Astra or Everest.
  2. You need to find the official website of the manufacturer and deal with its work.
  3. Find the right component and rewrite the energy data.
  4. And only then will it be possible to effectively calculate the power of the computer (W).

Effective Calculators

The calculation of the power supply of a computer can be easily and simply made using a special calculator, which can be found on the official websites of manufacturers who specialize in the corresponding devices. For example, on the official websites of Cooler Master and ASUS, on the start page, the user is invited to perform such a calculation.

The advantages of the calculator are that it has its own databases for all components available on the market. With the release of new devices, the manufacturer immediately updates the database, providing the buyer with relevant data. The ease of use of the calculator is obvious: I chose the necessary data from the list - I got the result. In the media, IT experts recommend increasing the data obtained after calculating with a calculator by 10-15% in reserve. In such cases, when installing additional components, the later power consumption of the computer will be within the effective operation of the power supply.

how to check computer power

What not to do

Many users are interested in how to check the power of the computer using synthetic tests on the performance of the power supply. After all, there are many recommendations in the media about this, as well as links to resources where you can download software for testing. It would be great to test the power supply, determine the maximum power of the computer. By making your own conclusions, leave the system alone or purchase a new, powerful device.

Even serious manufacturers in the power supply market claim that such testing is an adventure, because the software makes all the components in a computer work at the limit of their capabilities, which no program in the world, including the most productive games, does. The result of a successful test will be 100% power of the computer. But an unfortunate result can lead to the failure of one or more devices in the system. Whether such testing is necessary is up to the user.

computer power w

Finally

As can be seen from the review, the power consumption of the computer is calculated very easily and does not require special knowledge of physics or mathematics. All owners of computers, as well as potential buyers are encouraged to make calculations on their own. In addition, the cost of the power supply is directly proportional to the power, and there is no point in overpaying for any recommendations that are not confirmed by real data. Do not forget that too powerful power supply leads to an increase in power consumption, taking energy for their own needs, and this entails the daily financial costs of paying for electricity.

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