Didn't know where to post this, so I figured I'd try here. I have a newly acquired 2010/2012 Mac Pro (identical specs as the base 2012 with 16GB RAM before the cylinder came to be) with a Radeon HD 5770 - now I know Final Cut Pro X will use dual 5770's to yield some very impressive results. I plan to get FCPX when I am able, but for now, iMovie. So what about iMovie 10? Does it utilize the GPU for OpenCL acceleration, which I believe it does, but couldn't find anything definitive, but what is accelerated exactly? And does iMove use dual GPU's like FCPX?