For 10k in 05, 16 Pipe 6800GTs in SLI can do that at 400 Core...which means 16x2x400 = 12,800 Theoretical Fill Rate...which 24 Pipes can match with a Core of a mere 534 Mhz. (24x533 = 12,816 Theoretical Fill Rate) . So yes, 24 Pipes should own sli quite easily...except when high resolution FSAA comes into play, that's when the 24 pipes will not be able to keep up with 2x X850XTPE/6800Ultra in performance.

Perkam