Serious Sam 2	Source: CroTeam

Serious Sam 2 is a game that uses OpenGL and is a little more advanced than the now retired Quake III Arena. Higher numbers denote faster frames per second (FPS), and hence, better performance.

Serious Sam 2 (Quality 1024x768 Little Trouble) Benchmark Results
	Video Card	FPS	Ranking
1.	GeForce2 Ti	49.9
2.	GeForce3 Ti500	75.1
3.	Radeon 64 DDR	47.4
4.	ATi Radeon 8500	71.7
5.	ATi Radeon 8500 (oc'ed)	80.3

Serious Sam 2 (Quality 1024x768 Valley of the Jaguar) Benchmark Results
	Video Card	FPS	Ranking
1.	GeForce2 Ti	37.1
2.	GeForce3 Ti500	47.1
3.	Radeon 64 DDR	36.3
4.	ATi Radeon 8500	46.6
5.	ATi Radeon 8500 (oc'ed)	49.5

At 1024x768 even though the numbers are lower then other FPS's, the game is still very playable with the GeForce3 Ti500 or the Radeon 8500.

Serious Sam 2 (Quality 1600x1200 Little Trouble) Benchmark Results
	Video Card	FPS	Ranking
1.	GeForce2 Ti	21.5
2.	GeForce3 Ti500	29.4
3.	Radeon 64 DDR	23.2
4.	ATi Radeon 8500	33.4
5.	ATi Radeon 8500 (oc'ed)	38.4

Serious Sam 2 (Quality 1600x1200 Valley of the Jaguar) Benchmark Results
	Video Card	FPS	Ranking
1.	GeForce2 Ti	17.1
2.	GeForce3 Ti500	24.4
3.	Radeon 64 DDR	18.5
4.	ATi Radeon 8500	23.4
5.	ATi Radeon 8500 (oc'ed)	27.8

This on the other hand was quite painful. I got a headache running these demo's at this resolution since the whole game is so choppy! Needless to say, this resolution is out of reach for all of these videocards.