The rather low overclocking potential of the graphics memory chips doesn’t prevent the card from providing a high performance gain due to good GPU overclocking.

In the hardest mode – 1600x1200 with full-screen anti-aliasing and anisotropic filtering – the ratio of the scores and GPU frequencies in the standard mode and at overclocking coincides to about a couple of percent, and this indicates that the results of 3DMark05 are mostly determined by the GPU speed, at least with the GeForce 6800 GT graphics card. Good overclockability of this GPU is most helpful here.