Having put most of my money into cameras I'm late to get up to speed on editing. I've got an 09 MacPro5,1 with the ATI 5870 Graphics card which needs an upgrade. I'm currently running Davinci 10.1 and all the Adobe CC software. As you can imagine Davinci is running really badly. Premiere and After Effects are just slow. It seems both would benefit from CUDA. Hoping not to upgrade the power supply at this time what would you recommend I get. Thanks.