Overclocking the 320MB 8800 GTS boosted X3: Reunion performance at 1600x1200 by 11%, but even with this performance injection the 320MB card was still 5% slower than the 640MB version. Prey received a 24% performance increase, making the 320MB just 3% slower than the 640MB version. Finally, Far Cry ran 17% faster thanks to the overclock, though this still put the 320mb card behind by a small margin.