Question Do PSU constantly use their advertised wattage or do they give what the computer demands?

Feb 16, 2019
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I am planning to get a new computer and I am not sure if the psu uses its advertised wattage or it just gives what the computer demands
 

RealBeast

Titan
Moderator
I am planning to get a new computer and I am not sure if the psu uses its advertised wattage or it just gives what the computer demands
They attempt to provide what is needed, and hopefully rarely provide the rated power or more for extended periods. If they were to provide at or more than their limit it would be better to have a more powerful unit.

What power PSU are you looking at for what sort of components?
 

korv

Upstanding
Dec 26, 2018
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Something i've got from someone but yeah, the system should only get the wattage it demands from the psu. At least a couple of years when the psu starts to get old.
 

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