Considering that NVIDIA is able to crank the NV40 to 450MHz on the GeForce 6800 Ultra Extreme Edition, and the GeForce 6800 has fewer pixel pipelines activated, we expected the 6800's core to overclock fairly well. However, we also thought the on-board DDR1 memory and trimmed down power array would hold the card back a bit. In any event, we enabled CoolBits and overclocked the GeForce 6800 in an effort to boost performance...
When all was said and done, we were able to take our GeForce 6800's core up to an impressive 396MHz, an increase of 71MHz, or 21.8%, over the stock speed of 325MHz! Our cards memory also overclocked well, hitting a maximum speed of 819MHz DDR, a full 119MHz over stock. With the card overclocked, we re-ran a few of high-resolution tests with anti-aliasing and 8X Anisotropic enabled and saw some nice performance gains. At 1600x1200 with 4XAA and 8X Aniso, the GeForce 6800's performance went up 18.1% while overclocked, and it's framerate jumped 15.8% in Comanche 4 at the same configuration.