Legit Reviews posted a comparison between ATI versus nVidia under DirectX 10
The only playable resolution for Call of Juarez was at 1024x768 with no AA enabled. The NVIDIA GeForce 8800 GTX with the just released Vista 158.42 drivers was able to take the performance lead and beat out the ATI HD 2900 XT by a small margin. The differences between the NVIDIA 158.18 and 158.42 drivers was significant as they managed to pull off a 20% performance boost by the driver update. The update took NVIDIA from losing this test by ten percent to actually winning it by ten percent...ATI versus nVidia -- DirectX 10 Benchmarking
