noob question

[SPARAT1K]

Does a power supply, draw max cappacity from the wall at all times? or does it draw only what it needs?

just wondering (and i have been looking.)

 

[gwai lo]

only as much as it needs afaik

 

[SPARAT1K]

thanks,
anyone else certain?

 

[dandragonrage]

It draws (Power computer is using) / (Efficiency of PSU).... Short answer: what it needs

 

[SPARAT1K]

thank you.

 

[gee]

It draws (Power computer is using) / (Efficiency of PSU).... Short answer: what it needs

seconded.

There is inherent (constant) loss, and the efficiency of a power supply varies with the amount of load that's on it... but this is more or less accurate.