Originally Posted by Celeras
The FPS counter on the screen won't show much difference, but that doesn't mean they're the same. The difference comes from better frame latency (smoothness), more frequent/better driver releases, PhysX/CUDA, etc etc. Your instincts are right on.
Oh yeah, you totally have to ignore any tangible measures of performance. From what I understand, while not as powerful, or as overclockable as the 7950 and 7970, the GTX 670 and 680 smell like candy at load and poop out unicorns and rainbows when you aren't looking!
lol i'm just kidding, I guess when push comes to shove, you really can't go wrong with any of the 4 flagship choices.
Zvejniex, if you are really set on going green, I would definitely say go 670 over two 660s, that or wait for the performance and price numbers for the 760 and 770.