As I mentioned above, GTU would not hold the overclocked setings on startup with my system. I am also not sure that it realy raised the clock speeds even in the same session of windows. I saw very little increase in my 3dMark 2000 scores. Yes that is version 2000, let us be clear about that.
When I installed NVMax and raised my GF2-GTS-V to [CORE - 210] & [MEM - 325] my scores went from 3090 up to 7011.
Keep in mind that this is with 3dMark 2000, not 2001, but it did give me a 44% increase.
I am going to load 3dMark 2001 tonight and run the test again, at default and at 210/325, so that I can get scores that will compare to those now being posted.