8800 Ultra.
Intel Core 2 Duo E6850.
4 GB RAM.
Intel G33 motherboard.
Soundblaster X-Fi.
DirectX 9.0c (Mar 08).
No overclocks or mods of any kind.
Texture clamp setting not working in OpenGL
Setting: Any.
Problem: in Quake 3 based games such as Jedi Knight 2 white lines can be seen between textures as shown below:

Condemned 1.0
Setting: 1920x1440, 16xAF, 4xAA, super-sampling transparency.
Problem: sun shadows from windows sometimes don't render correctly.
The example below has a bright floor:

But when I step to the side a little the floor goes dark in the same area:

This problem happens in multiple areas in the game.
Dues Ex Invisible War 1.2
Setting: 1920x1440, 16xAF, 4xAA, super-sampling transparency.
Problem: when moving the mouse past objects such as the number panel below, the framerate plummets and the mouse visibly lags.

Fear Extraction Point & Perseus Mandate
Setting: 1600x1200, 16xAF, 4xAA, super-sampling transparency.
Problem: random jerkiness during gameplay that usually happens in areas using the new lighting scheme the expansion packs introduced.
Red Faction 1.20
Setting: any.
Problem: game is unplayable due to rendering artifacts as shown below. My ATi Radeon 4850 runs the game perfectly so it's an nVidia driver issue.

Stalker 1.0005
Setting: 1920x1440, 16xAF, driver AA higher than 4xAA, full dynamic lighting.
Problem: forcing driver AA higher than 4xAA (e.g. 8xQ) causes massive visual corruption.

Thief 3
Setting: 1920x1440, 16xAF, 4xAA, super-sampling transparency AA.
Problem 1: bad mouse lag when rotating your view close to walls, enabling vsync reduces the problem. No such problems on Radeon hardware.
Problem 2: stuttering/hitching in areas with heavy lighting (e.g. Underground Citadel).
Vampire Bloodlines 1.2
Setting: any control panel anti-aliasing setting.
Problem 1: Enabling AA other than 4x in the control panel results in no AA applied until you alt-tab out and then alt-tab back into the game.
Problem 2: Enabling 4xAA in the control panel results in a BSOD or driver error:



