I have a 2009 (4,1) Mac Pro, Quad-Core 2.66 My current video card is Nvidia GeForce 120 that is really slow when it comes to rendering Aperture 3 files from my Hasselblad H4D 40 (40 MP) and Canon 5D cameras. BTW Phocus is software for Hasselblad digital cameras. I was thinking of getting an ATI Radeon 5770. Anyone has a better idea? Thanks!