Which one is better? Will which ever one play High-End games on Ultra Specs at at least 70 FPS. Right now I have a GTX 550ti and that gets me 60 FPS on Mafia 2 with some settings medium and AA off. I'm looking to spend the least that I can so as long as the 600ti can put up decent FPS with Ultra settings and AA on then that should be good.Thanks in advance guys.
670, no contest, although I'd get a Radeon 7950 and overclock over both of them. The 660 TI has poor minimum frame rates due to is memory bus being hardly any better than a GTX 550 TI's memory bus, so you might want to skip it.