DOOM3 benchmarks of Radeon HD 4850 vs NVIDIA 9600GT (oc)
 

In another test we did, the HD 4850 seems to do pretty well in DOOM3. It scored 184.2 fps at 1600x1200 Hi Quality setting on a ASRock Intel X48 mainboard. The same setup with a Vvikoo 9600GT turbo (which outperforms a 8800GT card in our previous test) scored only 170.6 fps.

The Radeon HD 4850 is at least 8% faster than the oc 9600GT (factory default @700/1000).