I'm looking at getting a new mac pro quad to serve as a video editing system We want dual monitor setup but are curious to know if it is better performance wise to have 2 video cards to power each monitor or Just upgrade to the ATI card for 249 more. I know the ATI card is better but will the dual monitor setup affect rendering times vs. having a single monitor? Would I get better performance from 2 NVIDIA cards? Or is having the second card irrelevant to Final Cut Pro and Motion? I realize some of this is CPU reliant but I'd like to get the best performance for anything the GPU has to render. (too bad apple didn't upgrade the darn video card options ) Sorry if anything isn't clear let me know so i can help you help me. Thanks in advance!