Doom 3	Source: id Software

Doom 3 is the most advanced OpenGL game to date. It takes advantage of the latest videocard technology and pushes the processing power of the CPU to its absolute limits. At its highest setting, Ultra quality, texture sizes pass the 500MB mark which means even tomorrow's videocards will have a hard time running everything. The frame rates in the game itself are locked at 60 fps so anything above that point is wasted. Each test is run three times and with the third run being recorded.

Doom 3 - 1024x768-32bit
Anti-Aliasing	FPS	Ranking
Asus Extreme N6600TOP/TD/128M/A 2x AA	58.1
Asus Extreme N6600TOP/TD/128M/A QC AA	58.1
Asus Extreme N6600TOP/TD/128M/A 4x AA	36.8
Asus Extreme N6600TOP/TD/128M/A 8x AA	20.1
Anisotropic Filtering	FPS	Ranking
Asus Extreme N6600TOP/TD/128M/A 2x AF	79
Asus Extreme N6600TOP/TD/128M/A 4x AF	77.5
Asus Extreme N6600TOP/TD/128M/A 8x AF	77
Asus Extreme N6600TOP/TD/128M/A 16x AF	79.6
Anti-Aliasing and Anisotropic Filtering	FPS	Ranking
Asus Extreme N6600TOP/TD/128M/A 2x AA, 8x AF	57.1
Asus Extreme N6600TOP/TD/128M/A 4x AA, 16x AF	36.2

It's nice to see that no matter how fast the videocard, Doom 3 can still bring it to its knees. The N6600TOP/TD/128M/A provides perfectly playable framerates at 1024x768 in High quality mode with both AA and AF enabled though.