NVidia drivers

I suggest you go Here and read for yourself about the drivers.
And no one can tell you what drivers is best for your system. If you ask 50 people you will have 50 different answers.
You have to test for your self. But I don't think you will see big differences between most of the drivers. Some may just suck on your system, while other runs fine.

I have quite a bit of information that I have objtained for drivers having tried them all on different stuff and systems...ie win98se, ME....And another thing that is very important is the version of dx you are running. Now I now this doesn't make sense but here goes...for directx 7.0(a) the fastest are the 6.31's 6.34's 6.47's. I currently use the 6.34's...If you have directx8.0(a) then you must either try the 10.80's 11.00's or 12.00's. I have seen that the 11.00's are the fastest. Stay away from 7.xx's...and make sure you get the coolbits reg hack to disable vsync and fsaa...Right now on my rig I get an avg of 120+ fps on any board...hope this helps