ya it would be best to get 2 gtx260. i have that setup and im really happy with my gaming needs with those cards. finally crysis is playable @ 1680x1050 all very high and 16aa avg 30+. (might have a slight edge since both my cards running at x16) but trust me in sure ull be pleased with the configuration.
yes i have the same evga superclocked it will have much higher then 24fps. 16aa takes more resource then increase the resolution i believe.
wait i just looked at ur spec it seems like the ram is going to be a bottleneck and the cpu might slightly hinder performance. but u should get around 24fps avg.
well at 3ghz it shouldnt be much of a bottleneck.
haha yes i got my q6600 oc at 3.2ghz and 2gtx 260 in sli oc at 710/1230
on a 500w. still much more room to oc. =]
ppl exaggerate these days on psu wattage.