Freeware Powerbench allows you to retrieve your FPS, the only accurate mesure of your 3D performances, in different games benchmarks : it is a demo launcher working with ATi and NVidia graphic cards. With Powerbench you can configure all the graphics settings to use in the demos!

Powerbench works with:

Half-Life 2
Unreal Tournament 2004
Far Cry
The Chronicles Of Riddick


Finally it includes a CPU benchmark.
The english version (PowerBench 1.10) is here

ATIPower