Upgraded mac pro 1,1 to 2,1 GPU ATI R9 270 problems

Discussion in 'Mac Pro' started by cybert, Jul 2, 2014.

  1. cybert macrumors newbie

    Jun 13, 2012

    Maybe someone here can help me.
    I have a dual CPU 8 core Xeon mac pro. 16 GB mem.

    I just bought the ATI R9 270 OC card edition from gigabyte.
    I also bought the 2 special power cables that I needed (from main board to 6 pin power cable to power the card).

    Installed my card, connected the power cables, but nothing,...
    No screen, even after 5 min, nothing happens on my screen.

    Anyone with some suggestions?

    BTW, yes I installed a 64 bit boot loader, and I am running mavericks.
  2. 666sheep macrumors 68040


    Dec 7, 2009
    You need to add device ID to drivers, exactly that same like was with 7850.
  3. cybert thread starter macrumors newbie

    Jun 13, 2012
    Do you have a link to a how to for it?

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