I am asking this question out of curiousity.
I actually sold my 590 and waiting for a 670 SLI. But when i had Turned on Adaptive Vsync for games, i had really good results. My Screen is a 3Dvision ready screen from Acer and support 120hz.
In battlefield 3, adaptive vsync set my max frame to 120hz which was nice. In other games same thing happened and i was very happy with the results.
However in Crysis 2 when i turned on adaptive sync, the max FPS i had was 60. The game never went above 60 as if I had a 60 hz screen.
Any thoughs about this issue?
When I turned off Adaptive sync in Crysis 2 i could easily hit around 70-80 fps.