Manhattan 1450 (23.39 fps) / 4261 (68.73 fps)
T-Rex 1887 (33.7 fps) / 6418 (114.62 fps)
Manhattan 1637 (26.4 fps) / 4377 (70.59 fps)
T-rex 2799 (49.98 fps) / 6389 (114 fps)
It is interesting that under Metal the 4000 and 650M are neck and neck on T-Rex (impressive?) but under OpenGL the 650 bests the 4000 by a significant margin. Also the 650M OpenGL numbers are regaldamdissapointing all-around.
Is this indicative of how bad the Nvidia drivers are for OS X? I mean I would expect more than a 3fps gain with the 650M over the 4000 on the Manhattan test.
Not sure this whets my appetite for some actual Metal supported games.