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Question on Power Supplies

131 views 2 replies 3 participants last post by  zalbard 
#1 ·
If I get a 1000W and the system only needs 300W at the time, will it still draw 1000W on the electricity bill?

Also, how much do I need for 2 big GPUs and a high end i7 that is mildly overclocked?
 
#2 ·
Quote:
Originally Posted by fateswarm View Post

If I get a 1000W and the system only needs 300W at the time, will it still draw 1000W on the electricity bill?

Also, how much do I need for 2 big GPUs and a high end i7 that is mildly overclocked?
No it wont draw 1000 watts but the efficiency would be very low as the unit would be below 20% load

750 watts can cover pretty much any system with two video cards and an overclock CPU
 
#3 ·
Quote:
Originally Posted by fateswarm View Post

If I get a 1000W and the system only needs 300W at the time, will it still draw 1000W on the electricity bill?

Also, how much do I need for 2 big GPUs and a high end i7 that is mildly overclocked?
It will only draw as much as it needs.

A 850-860W PSU would be fine for your config with some headroom. 750W would also be OK, and I wouldn't recommend going lower than that.
 
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