This list was on overclockers.net and can be found here, but here are the top ten and the bottem ten. I’ve got a 7800GT which is #22, check out where your graphics card ranks.

Top Ten:
8800GTX

8800GTS
8800GTS 320MB
7950GX2
X1950XTX
X1900XTX
X1950XT
7900GTX
X1900XT
7900GTO

Bottom Ten:
Voodoo3
TNT
Rage128
Riva128
Rage3D Pro
Voodoo Banshee
Voodoo2
Riva
Rage3D
VooDoo1

[via Digg]