Doom 3

Resolution Comparison

The results in Doom 3 showed that when it comes to resolution, both the new GeForce 8800 Ultra and GeForce 8800 GTX are so fast that they are essentially CPU-limited at all resolutions tested. Even the high resolution of 1920x1200 was no challenge to them. As such, it's understandable why there is a very, very small difference in frame rates between the GeForce 8800 Ultra and the GeForce 8800 GTX.

Anti-Aliasing Comparison

The GeForce 8800 Ultra's frame rate dropped by 15.2% when we enabled 2x AA and a further 20.8% when we switched to 4x AA. At 95 fps, the GeForce 8800 Ultra is 10% faster than GeForce 8800 GTX at 4x AA and the GeForce 7900 GTX at 2x AA.

Further increasing the anti-aliasing level to 8xQ AA only reduced the average frame rate to 57.5 fps, a drop of 60.5%. Still, that was not only a very high frame rate, it was also the same performance as the GeForce 7900 GTX at the much less strenous 4x AA.

The tremendous processing power of the GeForce 8800 Ultra is evident when we turned on 16xQ AA. Even at this very high anti-aliasing level, it still registered a very playable frame rate of 45.6 fps. That was 12.6% faster than the GeForce 8800 GTX at the same anti-aliasing level and almost 2.5X faster than GeForce 7900 GTX at 8xS AA.

With GeForce 8800 GTX As Baseline

When anti-aliasing was disabled, the GeForce 8800 Ultra offered virtually no performance advantage over the GeForce 8800 GTX at 1920x1200. When we enabled 2x AA, the GeForce 8800 Ultra registered a 7.5% gain in frame rate over the GTX. This increased to 10% at 4x AA and 8xQ AA. The greatest amount of improvement was at 16xQ AA, where it was 12.6% faster than the GeForce 8800 GTX.