Gaming Performance 1
Day of Defeat: Source
The Dual is able to hit up against the CPU limitation with the FX-57 at all resolutions at 4xAA, 16xAF, unlike the single 7800 GTX or X1800 XT. SLI shows off.
Chronicles of Riddick
More SLI performance scaling with the Dual, kicking the asses of the other two high-end boards without any trouble.
Splinter Cell: Chaos Theory
The Dual flexes 40 pixel units worth of ALUs in this shader heavy title and outperforms the other two boards by significant margins (nearly 50% faster than an X1800 XT at 1600x1200).