Well since Im here, I think SLI is silly, unless you are SLI'ing the top of the line cards for the series... Not everything benefits from SLI and you wont get double the performance. Maybe 1.25-1.4x? I believe it doesnt even hit 1.5x. So if this card is indeed better than the 8800GTS 640 @ 1920x1200, I'm sold. The only thing is that its still 256bit vs 320bit. I'm sure that bandwidth plays a more significant role than I'm aware of. Experience from previous OC'ing has shown that increases in Memory clock has drastic improvements