AMD 64x2 3800+ (system requirements lab says it's rated at 5.7ghz, but I dunno what that means)
3 gigs ram
Vista premium
I have a 7600gs card right now, but with Left 4 Dead coming I was thinking about upgrading to an 8800gt, since they're pretty cheap now - is it worth it, considering my processor? Will I need to buy a new power supply or anything?