well that chart only compairs them on a 64 4000+, witch is good for compairison, but doesnt tell you how it will run on your system.
just for reference, i ran it on a...
xp3000 400fsb, 512ddr, 6600gt
Doom3 settings (timedemo demo1 1)
1280x1024res, 0xAA, 8xAF, High = 51fps
1024x786 res, 2xAA, 8xAF, High = 53fps