Newer + more RAM == better. Go to the nVidia web site and their specs on all their boards will help you determine which is best/better for you. In any case, a GS 7600 is likely much better than a GT6600 as it has a lot more memory. I have a 3+ year old 8800GT board, and until you get to very expensive high end boards, it is as good as any newer ones, at a lower power consumption rating.
rubberman
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