There is lots of great info posted on the video card topic, but I still wanted to solicit some thoughts on my particular situation. I have a 2010 Mac Pro upgraded with dual 3.46GHz X5690 CPUs and it's been running well for 6 months now. I am in need of a new display and a 4K display seems to make the most sense at this point. However, this will require a video card upgrade. My primary performance hungry apps are FCPx, Premiere, and Photoshop. No gaming. Whatever improved acceleration I can pick up is icing on the cake. It doesn't need to break any world speed records. I was looking at the 7950 simply because it seems pretty well vetted out at this point. It would also be easy to consider the 7970, but I'm concerned about power consumption when the system is running flat out for hours at a time. I want an option that keeps me within reasonable power limits and the 7950 seems to be within that envelope, while the 7970 might be a bit too much given the CPU upgrades already in the machine. I wanted to get some input here as to whether 7950 was an ok choice given my usage and concerns.