I have 2 4870X2's in crossfire X on V8.12. Pretty awesome performance wise with no issues at all when i run at 1920X1200 on my Dell 24". Yet i find i have issues with the right side of the screen wobbling on my 40" series 7 samsung at 1080p. The strange thing is it runs fine at 1080p on the desktop, its only when i run the likes of Farcry2 and Fallout3 but Crysis is fine at 1080p in 64bit DX10. Odd really but it doesn't bother me one bit as i use the Dell most of the time