Nvidia GeForce GT 680MX vs AMD 6970M w/2GB

[Fried Chicken]

Has anyone got info on the performance of these two graphics cards?
I'm thinking of just getting a 2011 iMac b/c the ssd upgrade is cheaper, the FireWire port, and I don't need my desktop to look too pretty.
However, if the new graphics chip is considerably powerful, it could sway me to get the 2012.

 

[forty2j]

We don't have any hard benchmarks on this 680MX, because there simply aren't any in the wild yet. However, it is anticipated to be 15-20% faster than the 680M, which itself benched about 30% faster than the 6970m. This is roughly in line with Apple's own performance page, which advertises 50-60% performance improvement using the 680MX vs the 6970m.

 

[i make movies]

It depends on what you're using the iMac for.

Any pro apps that use Cuda acceleration (most Adobe CS6 programs, Davinci Resolve, maybe FCPx) will benefit greatly from the 1500-ish Cuda cores the 680MX has.

Gaming, I have no idea, but I think it'll be great.