so according to those benchmarks the 768mb gtx460 in SLI is around the performance of a gtx480. then dual uncut gf104 in "gtx490" would be . . . very fast

also, you can bet the gtx460 has been designed specifically to not put the gf100 chips totally out of business. apples to apples the gf100 cards will still be faster. that said maybe you only need something as fast as an overclocked gtx460...