Just got my GTX 680 up and running today. I put all the settings to High and enabled SSAO. All of the free flight missions had 75+, even "down in the weeds". Only the free flight over London brought the frames down to 30=35m still very smooth.
I have the beta patch installed and the game looks amazing, much better than on my old Crossfired 5770's.
The card saved the game for me, that's for sure.
All my other sims are way smoother now as well, especially Warthog. Blackshar2 still sits at 24fps with settings set to high.
Two thumbs up from me!
Intel I5 2500K
Asus P8P67Pro mobo
MSI GTX680 Twin Frozr
4G Gskill DDR3 1600
Thermaltake 750watt power supply
Windows 7 Home Premium 64bit
Creative X-FI Extreme Audio
Logitech 540 Speakers
Saitek X52 HOTAS,Flight Yoke system