I was running my 8800GT with a 600W power supply and it worked fine. Wasn't anything special. Anything from a 500W to 600W should work fine for you, I believe this card needs around 24A on the +12v rail.
A forum community dedicated to tech experts and enthusiasts. Come join the discussion about articles, computer security, Mac, Microsoft, Linux, hardware, networking, gaming, reviews, accessories, and more!