I run glxgears in F10 with nvidia-173xx and in F11 Beta with the nouveau driver and got the following results:
F10/nvidia-173xx: =================
4475 frames in 5.0 seconds = 894.996 FPS 3974 frames in 5.0 seconds = 794.719 FPS 3771 frames in 5.0 seconds = 754.093 FPS
F11/nouveau ============
880 frames in 5.0 seconds = 175.875 FPS 879 frames in 5.0 seconds = 175.668 FPS
Somebody made similar experiences?