Phoronix: Intel Linux OpenGL Driver Leading Over Apple OS X

In revisiting the OpenGL graphics and gaming performance for an older Intel Core i5 "Sandy Bridge" Apple system, the Ubuntu 13.04 performance with Intel's open-source graphics driver is now easily surpassing Apple's OpenGL driver found in OS X 10.8.3.

http://www.phoronix.com/vr.php?view=18733