Quote Originally Posted by sin0822 View Post
You got to worry about peaks when you are overclocking, yea maybe it fits within TDP, but when you OC TDP is all but nothing.

I measured with my wall socket, account for efficiency and losses, and figured that at 1.1v my GTX 570 reference was pulling 80 watts more than TDP at only 900/1000.

I have a XFX 650 i think they are great PSUs don't get me wrong but it can't handle my GTX 570s in SLI and my 990x OCed, that is a job for my sparkle 1kw. and when both were OCed i saw peak at 980watts from teh wall, even though this PSu can push something like 1250watts on the 12v rail. BTW its a new unit, sparkles first shot at the big top, JG rated it amazing in performance, tieing the AX1000.
so you tried a 650w psu on a gt and sli'd fermi... of course it wont' work.

and you're talking bout peak power...from dc power...don't confuse the two.