How viable is it going to be to install graphics cards in current mac pros in say 3-5 years? Is it something to worry about? I have a 2012 Mac Pro that I just purchased and am hoping to see another 5 years of life out it. Is that even realistic, not sure. I went with the 2102 because frankly I don't have the coin right now to play in the nMP sandbox. Besides I'd like to wait and see versus being an early adopter. Right now it seems like the top end video cards are working through the dedicated work of a few individuals. What about video cards in 3 years, 5 years? Any chance they will work? Will power supply constraints become a greater issue? Software limitations? I don't see the PC market following Apple on their new Mac Pro design for a long while. And, the PC market has always determined the path that at least consumer video cards go in. I don't know a great deal on this stuff. Curious to know what others who do think.