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High-performance computer power supplies
Computer power supplies provide desktop computers with the voltages they need. PC power supplies convert the 230-volt alternating current of the power grid into the direct currents of 3.3, 5 and 12 volts. The dimensions of power supplies are standardised for certain standards, known as form factors. The currently predominant standard is ATX – power supplies for ATX have the same dimensions and are interchangeable. Special power supplies are available for Macs, old PCs or the smaller ITX. At Xepublic, you will find power supplies for your computer, as well as various adapters.
How much power does a power supply need?
The PC power supplies offered have maximum power outputs of 300 to 1000 W. The required power depends on the processor used and the additional components, such as drives, fans and graphics cards. Simple office computers with standard fans and without special graphics and video cards can manage with 300 W power supplies. Gaming computers require the most power because they have the fastest CPUs and processors, large and powerful graphics cards and additional fans. Depending on the configuration, the power requirement can reach up to 1000 W under full load.
Which power supplies are quiet?
Internal power supplies usually have a built-in fan. Today, these are almost always temperature-controlled, so they run more slowly at low loads. The fan should be as large as possible so that it can deliver maximum airflow even when running slowly. Some fans are particularly quiet due to noise-optimised bearings and fan blades. In some cases, the seller indicates the operating noise, measured in dB or sone. When it comes to the noise level of PCs, CPU fans and, if present, graphics card fans also play a major role.
What is the efficiency of computer power supplies?
When converting and smoothing electricity, losses inevitably occur, but these do not have to be high. Particularly efficient power supplies achieve a maximum efficiency of almost 90 per cent – but this can also be lower depending on the degree of utilisation. The 80 Plus certification, with ratings from bronze to titanium, is awarded to efficient power supplies. These power supplies have an efficiency of at least 80 per cent at all levels of utilisation.