Trying to get HD7770 working on a Mac Pro

Discussion in 'Mac Pro' started by Spacedust, Jan 5, 2014.

  1. Spacedust macrumors 6502a

    May 24, 2009
    These are very nice cards - 4 outputs only 1 PCI-EX power connector. So we might have 8 monitors inside Mac Pro, but it's not working well.

    I've flashed HIS iCooler HD7770 1 GB GDDR5 card and it seems card is properly working but I cannot get output on any of ports.

    This is how it looks like:

    So I've added a working HD5770 in slot 1 and HD7770 in slot 3. All booted fine and it seems it sees a VGA monitor even if nothing is connected to the card.

    I'm attaching my original ROM and EFI rom for diagnosis.

    It seems card is properly working with 5.0 GT/s !

    Does anyone have any success with HD7770 inside Mac Pro ?


    Attached Files:

  2. hwojtek macrumors 65816


    Jan 26, 2008
    Poznan, Poland

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