Well I finally received the 570 and did some Metro 2033 benchmark tests. Definitely worth keeping the 8800GT as a physx card. Time to run some tests and see if its worth keeping the 275 as a physx card. Only problem is I only have a Corsair 750W PSU. I'm not sure if it's enough to power a 570 and a 275. On a sadder note its a shame when you purchase a $350 vid card and you can't run a game on max settings, Metro 2033 in particular. I get around 30 fps average I was expecting at least 50. Guess I'll have to getva second 570 later on.