Multi monitor, multi GPU, non-SLI question

[samborarocks]

Hi all,

I about to add a GTX780 to my rig. If you look at my sig. I'm going to pull the 460, and use the new 780 for graphics and dedicate my old (current) 680 to PhysX.

I run a triple monitor setup (and may add a 4th this year).

My question is, is that any benefit to driving the main display off the 780 and the others off of the 680 (if it's even possible to do)?

Thanks for any advice.

-SR