I got a Black Friday deal on a MSI 7970... but I think I need to switch to an Nvidia card. I'm using a 1440p Achieva Shimian monitor, and I'm thinking about getting a second for dual screen. Problem is they only have DVI-D inputs... and the 7970 only has one DVI-D output. If I were to buy an adapter for the second monitor, it'd run me about $80 extra.
Sooo... I'm thinking about selling or returning the 7970 for a GTX 670. Thoughts? Are they pretty similar in performance?