6870 or 560?

[BurningSkyline]

also, could you SLi/CFX these cards on a 700w PSU?

 

[mihir]

A GTX 560 and if it is a good quality PSU then yes

 

[AcetheGamer]

Not much of a difference, but if you're overclocking then that's a different story.

 

[ChrisUlrich]

You plan to run 3D or more than 2 monitors?