QUOTE (ROOK Master wiz @ Oct 19 2008, 06:46 AM)

if it's a power supply that came w/ the pc it should say it somewhere in your book. if not take the side of the tower off and look at the sticker.
True.
Or you can use Rivatuner, SPEEDFAN to find out how many
WATTS your PSU is.
For a 7600GT you won't need any more than like 400W to run it. I mean, a 500-600W PSU can run a 8800, even a ATI 4870.