tough question considering how many driver revisions there are out there. I can't personally recommend what is the "best", though I have played around with a few revisions. Your best bet may be to visit Guru3d.com, they have an extensive list of nvidia's drivers both new and old that you can browse through and try out. Download and test with different driver revisions and doing some googling may be the best way to go about it. Hope that helps.
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