Hey Dishdog, when did you get that 6600GT? You done any OCing to it yet? Get some scores done on 3dmark03 and 05 and compare it to money_man and I. I like to see where we fall as far as MSI cards go. Yeah...
The 6600GTs can be OCed to 6800 speeds without a problem and keep up with 6800GT. So I would think dual 6600GT SLi would do a pretty good job but not all games or programs support SLi to notice a difference anyways.