How To Upgrade Your Mac Pro Graphics Card
I've recently had to make the switch over to Premiere CC on my home Mac Pro, but my old 2009 tower didn't cut it. You need a Nvidea GPU with at least 1GB of video ram to use its Mercury Playback Engine. So in order to get more life out of my old Mac Pro I upgraded its graphics card.
Not only will a new graphics card give you support for the Mercury Playback Engine and CUDA, but it will also enhance many tools in Photoshop.