3DMark03 & Call of Duty
3DMark03
Vendor: Futuremark - (Website)API: DirectX 9.0
Pixel Shader Version Supported: Mix PS1.1, PS1.4, PS2.0
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The Glacier 6800 128MB does pretty well in 3DMark03. It's comfortably ahead of a Radeon 9800 XT at all settings. It's a case of a 12-pipeline's sheer grunt overcoming core and, to some extent, memory bandwidth disadvantages.
Call of Duty
Vendor: Activision - (Website)API: OpenGL
Pixel Shader Version Supported: PS1.1 class
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Call of Duty, when tested with maximum detail, makes cards with less than 256MB of memory suffer at the highest setting. The Glacier 6800's frame-buffer simply isn't large enough to allow the card's pixel-pushing capabilities come to the fore. However, if your intention is games-playing at lower resolutions, the 6800 is more than fine.