First I'll start by saying I'm running 3 1920x1080 monitors and that's the reason I am going with 4gb instead of two.
Had a question.. I found the GTX680+ 4gb for 500 dollars(msrp 599 average is 560) .. the Classifed is 659 minimum... At that price point, is it still better to go with the classifed?
The main difference is the +100 MHz core clock on the Classified. Which for a lot of games is going to eek you out a few more frames. Probably not enough of a FPS increase to warrant $100 more. As I'm sure you can eek out a few MHz if you got the 680+.
I'd stick with the 680+.