7970 vs 680

[XiDuel]

Sorry for posting this, it had probably been posted dozens of times before, but I'm deciding between a 7970 and a 680. I don't know which one would be better for my system below, does anyone have any opinions? Same goes for the version to get (Gigabyte, EVGA, MSI ect.) Thanks

i5 3570k @4.4GHz
16GB Corsair Venegence
Asus P8 Z77 LX
500w Corsair Builder
9 *ahem* 120mm case fans (w controller)
2 seagate hard drives

 

[XiDuel]

Ok, do triple monitors count as above 1080p? Thanks for the quick reply

 

[XiDuel]

I'd probably be running at 4320 x 900, I was thinking about two 7950s, though from what I can tell its a hotter, more expensive option that might not work as well on some games as a single card. Plus might be pushing at 500w?

 

[XiDuel]

If the 7970, any particular models? Or whichever is cheapest. I will probably overclock myself though that is not certain.

 

[XiDuel]

I'm not too worried about running on ultra or anything; I currently run BF3 Low - Medium although I can handle higher. When will the new AMD cards be out, and what will be the benefit, as well as price difference?