How to determine the sufficient power of the PSU?

Question

Iron

The situation is this: I have a computer, I buy 1200 watt bp for it, how much does my computer really eat? The full power of the bp (roughly speaking 1200 watts per hour? Or so much - how much iron eats?

Answer 1

As much as iron eats + conversion losses, 5-10-15% or more, depending on the quality of the PSU, and on the load.

Answer 2

Power supply calculation vindavoz.ru/jelezo/574-raschet-moschnosti-bloka-pi...

Answer 3

Classic advice when buying a PSU: take it with a power reserve of about 15-20% of the planned maximum load (over time, due to wear and aging, the PSU loses some of its power and characteristics) and so that you can connect any additional devices without problems or make a small upgrade; plus, in some cases, about 15-20% of the margin due to losses during conversion and marketing - if it says on the box that the PSU has a capacity of 1000 watts, this does not mean that it produces all 1000 watts, and does not consume 1000 and puts out 700-800 watts. Well, we take into account that if you plan to buy a second video card or some other powerful expansion card, then add some more watts here (for most video cards, for example, this is about 250-350 watts more, plus or minus, depending on the model and manufacturer). Certainly, this is more related to cheap nouns and occurs infrequently, but it must be borne in mind. In addition, when the PSU is operating at its maximum power, it can provide poor-quality power and on some lines the voltage may drop or rise above the permissible level, which can negatively affect the components up to the loss of these components, especially sensitive to HDD voltage. But if the PSU is of high quality and you operate it within its real 80% power, it may well live for a long time and change more than one set of hardware and a complete upgrade. which can negatively affect components up to the loss of these components, especially sensitive to HDD voltage. But if the PSU is of high quality and you operate it within its real 80% power, it may well live for a long time and change more than one set of hardware and a complete upgrade. which can negatively affect components up to the loss of these components, especially sensitive to HDD voltage. But if the PSU is of high quality and you operate it within its real 80% power, it may well live for a long time and change more than one set of hardware and a complete upgrade.