Doesn't matter though because your going SLI per your [H] post
I'm either going SLI 780's, maybe 2x290x's or 2x gtx 785's. I know I'm acting like a GTX 785 is actually on the way but seriously, who doesn't think it will happen. I'm just getting the itch for a little more juice. I've tried playing Metro LL on my 30" and with all the bells and whistles and I need a little more oomph.
I'm sure the new Batman in this holiday bundle will *need* more power than my 780 can provide aswell.
I'm definately looking to play with Physx on since Batman is usually a pretty decent implementation so I will most likely go sli 780's or 785's over the 290x's.
This bundle may actually get me to buy a new card over a used one though. We'll see. Too much to think about right now. Heck, I may actually go sli 780's and crossfire 290 x's since I really have been wanting to check out the latest iteration of multi gpu from both camps.