If I had an unlimited supply of money...
I'd buy as much stock as I could in nvidia, to become the top shareholder, and tell them to give me a card thats planned for release a couple years (or more) into the future. They probably have gpu's that are a ghz or 2, just slowly releasing slower core clock models so they can keep making money.
C2D E6600 @ 3.15ghz w/ 1.35 vcore
2GB G.Skill DDR2-800 (4-4-4-12)
XFX 7600GT xXx