Here is the winner announcement:
I'm really happy!
For those interested here is my setup and how I did these scores.
The System is an old P2 with 512MB of ram and a Geforce 5200 agp video card.
First I've forced the antialias and anisotropic filter to the max in the driver, then one of the gpu caps viewer tests to slow everything down, the opengl 1.2 test (furmark doesn't run on this old hardware).
Here is a little trick, I used atitool to underclock the gpu, with atitool I've created 4 frequency profiles, one for every game test, and then associated a hotkey to be able to change the frequency while a test is loading, this way could run every game test with a different clock.
By the way, it takes a really long time to find the right frequencies, the 4 tests takes about one and a half hour to complete.