Ok now i was lucky enough to recieve a 6800GT for free from a friend
, because he upgraded his. i currently have a 6600 and i wanna put the 6800GT in but i cant because i dont wanna void the warranty. is there a major difference in performance between them and what's the minimum PSU i'm gonna need to run a 6800GT. i also have P4 3.2ghz with HT and 1 gb of corsair ddr ram. there wont be any bottlenecks?