OS X 10.10.2 and GeForce 780 Ti

Discussion in 'Mac Pro' started by pixelatednoise, Apr 1, 2015.

  1. pixelatednoise macrumors newbie

    Joined:
    Apr 1, 2015
    #1
    Hey guys, New to Macrumors but I managed to get a GeForce 780 Ti installed on my mac pro 5,1 using internal power supply (I actually have 2 780 TI's that I would like to install). Im afraid the internal isn't enough to power it when I push the card and I want to install the second and run both off a 1000 watt corsair PSU. But whenever I connect it to the PSU the machine won't turn on. When its connected to the internal power it boots. What gives? Any help would be appreciated as I would love to run both these cards with enough power for GPU Rendering.
     
  2. MacVidCards Suspended

    Joined:
    Nov 17, 2008
    Location:
    Hollywood, CA
    #2
    google "paperclip trick psu"

    lots of research to be done that will help
     
  3. pixelatednoise, Apr 1, 2015
    Last edited: Apr 1, 2015

    pixelatednoise thread starter macrumors newbie

    Joined:
    Apr 1, 2015
    #3
    Awesome. Thanks for the input will give this a try! Now i have to figure out how to have OS X see the CUDA. right now they read the cards but CUDA isn't being supported or seen

    UPDATE: All my wires are black!!! errrr

    UPDATE 2: Managed to get the CUDA up and running had to install and old CUDA driver and then install the most recent. Kinda a pain as I had to search for the oldest one that had the 780 ti driver in it.

    Now I am up and running once I find a paperclip and based on the photos Ive seen I will use the 4th hold from the right and the 5th from the right since the cable isn't color coded.
     

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