Gaming Performance 1
Day of Defeat: Source
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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
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More SLI performance scaling with the Dual, kicking the asses of the other two high-end boards without any trouble.
Splinter Cell: Chaos Theory
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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).