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.

Quake III Arena MAX 1024x768 demo001
	Video Card	FPS	Ranking
1.	ATi Radeon 9800 Pro	370.7
2.	ATi Radeon 9700 Pro	347.9
3.	Gigabyte Radeon 9600 Pro	239.5
4.	MSI FX5900U-VTD256 Ultra	395.4
5.	Albatron GeForceFX 5600 Ultra	310.1
6.	MSI G4Ti4600-VT2D8X	294
7.	Asus Radeon A9600XT	265.2
8.	Asus Radeon A9600XT (553/341)	286.3

Quake III Arena MAX 1024x768 nv15demo
	Video Card	FPS	Ranking
1.	ATi Radeon 9800 Pro	88.2
2.	ATi Radeon 9700 Pro	87.7
3.	Gigabyte Radeon 9600 Pro	87.1
4.	MSI FX5900U-VTD256 Ultra	93.4
5.	Albatron GeForceFX 5600 Ultra	93.8
6.	MSI G4Ti4600-VT2D8X	94.1
7.	Asus Radeon A9600XT	81.2
8.	Asus Radeon A9600XT (553/341)	86.6

In Quake III we see that the the Radeon 9600 class videocards don't quite have enough bandwidth to really compete with the GeForceFX 5600 Ultra.

Quake III Arena MAX 1600x1200 demo001
	Video Card	FPS	Ranking
1.	ATi Radeon 9800 Pro	202.3
2.	ATi Radeon 9700 Pro	175.7
3.	Gigabyte Radeon 9600 Pro	104.4
4.	MSI FX5900U-VTD256 Ultra	237.6
5.	Albatron GeForceFX 5600 Ultra	143.9
6.	MSI G4Ti4600-VT2D8X	137.5
7.	Asus Radeon A9600XT	117
8.	Asus Radeon A9600XT (553/341)	132.4

Quake III Arena MAX 1600x1200 nv15demo
	Video Card	FPS	Ranking
1.	ATi Radeon 9800 Pro	86.7
2.	ATi Radeon 9700 Pro	85.9
3.	Gigabyte Radeon 9600 Pro	65.7
4.	MSI FX5900U-VTD256 Ultra	92.6
5.	Albatron GeForceFX 5600 Ultra	79.1
6.	MSI G4Ti4600-VT2D8X	76.2
7.	Asus Radeon A9600XT	68.6
8.	Asus Radeon A9600XT (553/341)	72.8

At 1600x1200 we see that all cards start to lag but they're all still perfectly playable.