Originally Posted by damric
Go for a quality 1000W. PSU's are more efficient at half load right?
Nnnnope. Follow the link in my signature and read the 50% load myth thread.
Edit: Wow, this thread got out of hand while I was playing Total War. Don't make me have to try out my mod powers so soon.
Damric, the calculators you are using are overestimating, in large part because you don't fully understand how to use them. Capacitor aging of 30% would take nearly a decade to occur with quality Japanese electrolytics. And I presume you're setting %TDP and %Load to 100% as well? Which gives you completely unrealistic figures.
The long and short of it is that you're wrong. I've recommended 650W PSUs to dozens of Crossfire 6850/6870/6950 users, and all of them work without hitch, often without even getting loud if it's a higher end unit. Give it up, mate.
OP: A quality 650W would be perfect for your needs.Edited by Phaedrus2129 - 5/13/11 at 11:38pm