My 3DMark06 score is 7128, which sounds pants. Without CrossFire it was down as low as 4200.
I don't know whether my processor is holding me back though. It's a 4000+ San Diego overclocked to 3GHz. I've been thinking of paying out money for an Opteron 185 or an FX-60 if I can get hold of one cheap and second hand on eBay, but I don't know whether I'll get much of a performance increase in single threaded applications. If someone said "Absolutely you would!", then I'd pay out the money.
Incidentally, I was hoping to get an ATI card as a replacement...While nVidia cards give better framerates, I feel ATI cards give slightly better picture quality.