(sorry for hijack) I currently have a 1G 5870 would I see a significant improvement with a GTX670 ?
I need a card with 2 DVI ports and DP as I run 3 screens (Dell 2007P - Dell 3008 - Dell 2007P) but only in desktop, I only game at 1920 x 1200 but I need the 3 screens for work. The lack of 2 DVI ports is what is putting me off the AMD stuff this time.
Big jump.

http://www.anandtech.com/bench/Product/511?vs=598