Originally posted by: thilan29
As Amber said, I think that might be cutting it close. A fully loaded 4870x2 system would probably take 450-500w, depending on CPU and fans/Hdds, etc. Also, OCing might make the system very unstable if you're cutting it that close.
Originally posted by: Brunnis
Judging by the reviews, it seems even a pretty beefy system with this card will stay below 450W at the wall. At 85% efficiency, that's a ~380W load on the PSU. Considering that the HX520 can output 480W on the 12V rail, I'd say that leaves a pretty comfortable margin. Atleast for a high quality PSU such as this one.
From the reviews, are they giving the power draw at the wall or once the efficiency has been factored in? I figured review sites would have factored the efficiency in.