In my setup, I have an i7-3770k with HD4000 graphics running my primary display, and a secondary display running off a GT640. I also have a GTX68 with no monitors to speed up renders in Resolve, etc. This is all in Mac OSX 10.9.1. When I open AE CC and go to preferences/previews/GPU information, it shows both Nvidia cards under CUDA, but under OpenGL, it only lists my HD4000. Ideally, I would like the GTX680 to do as much work as possible. How can I tell AE not to use my internal graphics?
p.s. I am running current versions of AE, OSX, and CUDA drivers. I do not have Nvidia drivers installed since they are not supported in Mavericks.