Mac Pro 1,1 - Radeon HD 7950 cards

Discussion in 'Mac Pro' started by RogerX, Jun 7, 2014.

  1. RogerX, Jun 7, 2014
    Last edited: Jun 7, 2014

    RogerX macrumors newbie

    Mar 4, 2009

    I need some help choosing graphic card for MacPro1,1
    Which one of these is best choice for flashing and it needs to have ability to connect two DVI LCDs 24" in OS X 10.9+:

    Sapphire AMD Radeon 7950 HD
    P/N: 299-2E249-000SA
    SKU: 11196-19

    SAPPHIRE Radeon HD 7950
    P/N: 299-1E249-100SA
    SKU: 11196-19-20G

    SAPPHIRE Radeon HD 7950
    P/N: 299-2E249-000SA
    SKU: 11196-19-20G

    PowerColor HD 7950 TurboDuo
    Name: AMD Radeon R9 200 Series
    Model: AX7950 3GBD5-2DHV2
    BIOS: (113-C3864000-100)
    Device ID: 1002 - 679A
    Memory: Elpida

    Thank you.
    Roger X
  2. ArnoldBocklin macrumors newbie

    Apr 10, 2013
    Graphics Cards in Mac Pro 1,1

    Have to admit first off that I've personally not flashed a graphics cards although have noticed other users' successes elsewhere on the MR Forums – FWIW I've had an ATI Radeon 5770 in a MacPro 1,1 (unflashed) running without incident for a number of years and there was a significant speed benefit in almost all of the graphics apps I run. Supports 1920x1200 out of the box – hope this is helpful...!
  3. MacVidCards Suspended

    Nov 17, 2008
    Hollywood, CA
    If having all 4 ports working is important, the only guaranteed ones are reference design. Many later designs lose the HDMI port once flashed.

    Also good to find one that has the BIOS switch, it has 2 EEPROM chips so if you do a bad flash you can flip switch and start fresh.
  4. RogerX thread starter macrumors newbie

    Mar 4, 2009
    Thnx guys.

    I got now R7950 TWIN FROZR 3GD5/OC.
    (dual bios switch)

    I can get working only two displays at once:
    DVI + MDP (any), or MDP + MDP.

    didn't try HDMI, 'cause I don't have any HDMI device.

    I can't find BIOS to flash this card.
    Do I need to install proper kext too?

    Is there any hope for me to get at least three displays in OS X (in Windows is working fine)

    Can anyone help me, please?

  5. MacVidCards Suspended

    Nov 17, 2008
    Hollywood, CA
    I'm going to guess that when you say "MDP" you really mean MDP to DVI adapter. Note that is 100% completely different from MDP.

    Get a HDMI to DVI adapter for $10, but if I am right about MDP you may be out of luck. DVI is considered "legacy" so a limited number of signals generated for this. If the card only creates 2 you will need to connect one of displays directly by MDP or DP, NO ADAPTERS.
  6. RogerX, Dec 21, 2014
    Last edited: Dec 21, 2014

    RogerX thread starter macrumors newbie

    Mar 4, 2009
    Sorry.. by MDP I ment Mini Display Port to DVI adapter.

    For this setup I have three LCDs, two 20" and one 24".
    All have VGA and DVI inputs.

    I ordered for HDMI to DVI adapter.

    Any chance that I could use all those LCDs?


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