Isn't 7 the max limit on win7? so I'm guessing it should be fine unless you don't have the correct psu. Let others chip on their knowledge.
My PSU is a Seasonix X-1250, a 1250W PSU. It's gold rated.
That's why I decided to post this thread, before I drop $300 on a WC'd 5970 and find out it doesn't work. I only have 1 MOBO, Gigabyte 990FXA-UD7.
:S