Currently Being ModeratedJan 15, 2013 7:52 AM (in response to samm1551995)
Everything you need to know has been asked / answered / and threads devoted to the topic -- look on MacRumors forum under Mac Pro and look also for cards from MacVidCards that sells flashed modified cards like GTX 570 2.5GB for CUDA use. And you probably will need a 2nd 450W PSU.
Currently Being ModeratedJan 22, 2013 8:18 AM (in response to The hatter)
I just did this myself and I am extremely happy with the performance gain. Since your Mac Pro came with a 5770 it only has one cable for the video card. The GTX 670 requires an additional cable, I purchased mine here -
Currently Being ModeratedJan 28, 2013 1:52 AM (in response to samm1551995)
Hi sam, i just bought msi gtx 670 for my mac pro 8 core 2010 model. you can use this graphics inside but only for windows only, i think there is some solution to run on mac, but i dont care as for now because im not using mac all the time. my only problem is my fan in my mac cannot control, not unlike the hd 5870. so i feel a bit of heat on my mac but still my processor on idle still not going above 50%, almost 44 to 48 on idle. also about the card you should buy the 2x6 pins because some of the graphics card have 2x8 pins. but everything i can run in ultra like battlefield 3, medal of honor. the fps is around 50-90 on campaign & for the multiplayer its around 50-70. still need to check my graphics card because i just bought it last sunday.