i install 10.8.2Nir on my AMD pc.
in first time on installation i dont use any Graphic Driver and after installation , Mac start up with a black screen.
and then install again and select 'NVInject' (or something like that) for Graphic Driver and Mac Start grate in 1920x1080.
but there is no 3DAccelerator and i can not play any game or run any 3d app and Launchpad is very slow.
Please help for Enable 3DAC for GTX260 on 10.8.2.