I had XP x64 running on my Q9450@3.2 and the RAM at 1600MHz 7,7,7,18,2T and got a CPU score of 5468 and a SM 3.0 score of 6051.
Now, get this. I’m on Vista x64, Q9450@3.6, RAM at 1800, 8,8,8,18,2T. Both the scores have lessened to 5328 and 5851 respectively :S! 3 runs of 3D mark 06 have consistently thrown up lower scores.
I’m not crying over the loss of a couple of hundred points, but what’s going on here? Card’s at stock.
Its no secret. It lowers your overall score by as much as 500-1000 3DMark points depending on the system.
For me difference is around 1000 points between XP and Vista. (32 bit and 64 bit both throw lower scores ).
Niice. Maybe the OCs helping keep the difference low in my case!
Oops, there was a typo in above post. I wanted to post overall score and not cpu score. Corrected. But yes, it does lower the score.
I thought so too. My overall diff is just that, a couple o hundred points 
hey Naga , whats the max overall and CPU score in 3dmark06 u get after overclocking CPU and GPU both ?
^^14728. Card on stock. All settings as mentioned in the 1st post. ORB Link