M17x r3 680M compatability

UPDATE! We need YOUR help, please see post 204. Thank you!

A Dell rep has assured me over the phone that if I purchased a 680M from them to put into my M17x r3 that it'll work just fine. I currently have a 580M in the machine, and it seems like the 680M is a pretty significant increase in graphics performance.


Will there be any roadblocks I encounter with using that GPU in my M17x r3?


Thanks!