Hi all. I am a Cinema 4D user and I have just installed Cinema 4D R19 that comes with a new GPU-based renderer, ProRender. My MacPro is a 5,1, 6-core 3,33 ghz with a ATI Radeon HD 5770 1048 mb graphics card. That graphics card is way to old for ProRender so I am thinking about getting a new one. Does any one has some idea what would be the best choice for a new graphics card for the MacPro 5,1 using Cinema 4D and ProRender.