Quake III Arena	Source: ID Software

Quake III Arena is a First Person Shooter (FPS) that revolutionized gaming as we know it. Using multiple light sources and having graphics textures that can fill videocards, even after 3 years it's still able to bring a cutting edge system to its knees.

Quake III Arena MAX 1024x768 demo001 with AF
	Video Card	FPS	Ranking
1.	ATi Radeon 9700 Pro 2xAF	239.8
2.	ATi Radeon 9700 Pro 6xAF	238.1
3.	ATi Radeon 9700 Pro 8xAF	236.6
4.	ATi Radeon 9700 Pro 16xAF	235.3

Like we saw in 3DMark, with AF enabled no matter the setting it performs all about the same.