Since I run 2560x1600, if I'm going to replace my trusty 4870X2, it'll be with a 6900 series card anyways, but this has me more excited about the 6900's than anything

If Barts is GTS 450 die size, GTX 460 power draw, and GTX470 performance... what in the world will Cayman XT much less Antilles do given that Cayman is supposed to be a die larger than even the 5870??