Don't forget 6800's overclock too. Next weekend I'm hooking a Zalman VF700 up to a BFG 6800 GT AGP with a 3200+ Vience. I'll report back with some results, I'm hoping for 440 core/1200 mem and 5600-5800 marks.
By the way, my computer is loud like no other. Seriously it sounds like a jet (Delta 60 dBA fans). But, I also have a nice set of Kplisch 5.1 speakers so I really don't mind.