how to install geforce gtx 780 on a mac pro 2010 ?

Discussion in 'Mac Pro' started by jmacfichet, Nov 10, 2013.

  1. jmacfichet macrumors newbie

    Nov 9, 2013
    Hello, I've bought a geforce gtx 780 and I try to install in a mac pro 2010. I removed the old radeon 5770 and put the geforce gtx 780. Nothing appears on the screen. When I open the mac pro, the geforce seems working. However, do I need more power ?
    Is there a way or a method to do it properly ?

    Many thanks for the help in advance
  2. ashurao macrumors member


    May 13, 2012
    Paris, France
    Excuse me if I ask a stupid question, but have you connected a second connector 6 pins or did you just used one of the 5770HD?
    the 5770HD just uses a 6-pins, and the GTX 780, a 6-pin and 8-pin connectors. How did you do the extra connection?
  3. DanielCoffey macrumors 65816


    Nov 15, 2010
    Edinburgh, UK
    At the very least you will need a second Mac-compatible 6-pin power connector (they are not the same as PC cables) for that 8-pin slot but you should be aware that unless modified the 780 is specced for a higher power draw than will be supplied by the Mac Pro.
  4. jmacfichet thread starter macrumors newbie

    Nov 9, 2013
    Yes I have connected only the 6-pin of the 5770HD.


    Thanks so much for your reply. DO you have any idea where to order this kind of 6-pin 8-pin cable ? Very difficult to find around Geneva.
  5. Gav Mack macrumors 68020

    Gav Mack

    Jun 15, 2008
    Sagittarius A*

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