Serious Sam: SE, Unreal Tournament 2003
Serious Sam: SE
Vendor: Croteam - (Website)API: DirectX 8.0
Pixel Shader Version Supported: No pixel shaders
The clock speed differences don't do that much for Serious Sam, indicating a slight CPU limitation in this OpenGL test, or some other OpenGL issue. Excellent performance throughout though.
Unreal Tournament 2003
Vendor: Epic - (Website)API: DX8.0
Pixel Shader Version Supported: PS1.1, some limited PS1.4 shaders to render terrain in less passes
All three boards offer broadly similar, strong Unreal Tournament 2003 performance. The X800 is particularly strong in this particular test, able to keep pace with the 6800 Ultra's without any problems.