I just installed my new EVGA GTX 285 Video card yesterday on my Mac Pro and started to play Crysis when a minute into the game it starts artifacting. Right when it happens the cards fan stops spinning fast. My computer doesn't shut down though I can blindly exit the game and go into windows with the display being fine as soon as i exit. I called EVGA techincal support and at first they told me to uninstall and reinstall the video card drivers. When that didn't work they asked me what motherboard I had and when I told them I had a mac pro they immediatley stopped offering support. I looked on their forums and found that this problem is known with no real solution except for running driver sweeper, which i did with no luck. The power configuration i have is one cable running from the optical bay and one from the logic board. I am awaiting delivery of my ati powercord tomorrow so i can run two from the logicboard and that is the last option before i return it to buy.com. If anyone has any suggestions on what might be the problem it would be greatly appreciated. If not I hope this will inform people about the problems the EVGA are having with their video cards. Going to try BFG next.