Much has been written about GPU tuning with AppleGraphicsPowerManagement (AGPM). There are good threads on the matter at InsanelyMac and Olarila or on RampageDev's blog and many other places that I simply cannot list exhaustively. http://olarila.com/forum/viewtopic.php?f=18&t=1839 http://www.rampagedev.com/?page_id=311   A couple of years ago I did some research with Bronxteck on the matter of CPU/GPU performance tuning with FakeSMC. Whilst we achieved good results, I noticed ages ago th