Might as well just get the two 460s, you'll get more performance, save money, and they should handle anything you throw at them especially if you're only using 1 monitor, even at 1980x1020 res
what about the 2 gtx 460 vs gtx 570??? Oh and the cpu i got for it is the AMD phenom II 965 black edition will that work for those two 460 sli??? And my psu is 600 watt?? gonna run it with 8 gb corsair vengeance ram.