Who wants to try 2 D700s with Internal Power, BIOS provided

Discussion in 'Mac Pro' started by Prince134, May 11, 2014.

  1. Prince134 macrumors 6502

    Aug 17, 2010

    Here are BIOS ROM for any one who want to try the down clock and down volts HD 7970s. Even if you only want to put one HD 7970 in your Mac Pro, the noise level is reduced as stated in the other thread.

    As long as you have reference design HD 7970, one fan. Here are your bios.

    -MAC OS boot screen.
    -0.956V at load
    -GPU clock 925Mhz
    -Memory Clock 1300 Mhz
    -less than 200 Watt consumption (~185W)

    Please update to the forum your BruceX performance in sec, as well as Sala LUXMARK, GPU score, and GPU+CPU score.

    Mine is 2x3.46G cpu, 128GB RAM, dual HD 7970 (2xD700s).

    Final cut Pro 10.1.1 BruceX performace: 23-24 sec.
    LUXMARK, GPU only 4,120.
    LUXMARK, CPU +GPU 5,146.

    Just for a comparison, my single GTX 680 BruceX is very poor at around 1:45.
    LUXMARK GPU score give me under 700. So OpenCL wise, AMD is several times outperforming and is also strongly supported by APPLE in its video editing products. Plus, now Adobe supports OPENCL in Premier Pro too.

    So please update yours.

    Note: g095vmac.rom was for my Gigabyte HD7970, X095vmac.rom was for my XFX HD7970, both are reference design. I think you can use either one if you are sure it's reference design cards. Be sure using DOS drive in PC and perform atiflash. ATIWinflash got me some unpredictable error, so I would avoid using it.

    Attached Files:

  2. Prince134 thread starter macrumors 6502

    Aug 17, 2010
    No, one fan at the end. Mine is xfx black edition. Google HD7970 reference design, it means PCB design as early as they debut in the market. Don't have to be XFX.
  3. TzunamiOSX macrumors 6502

    Oct 4, 2009
    And how does you Gigabyte 7970 look like? Link to a picture, please.
  4. MacVidCards Suspended

    Nov 17, 2008
    Hollywood, CA
    People with Visiontek brand reference 7970s should skip this.

    They use reference fan but not reference pieces.

    Possibly anyone with blue PCB as well.
  5. Prince134 thread starter macrumors 6502

    Aug 17, 2010
  6. Prince134 thread starter macrumors 6502

    Aug 17, 2010
    Important reminder

    Hey guys,

    I want to make one point here. The reason I mentioned "reference design" is because that you would use my bios provided here. So a purely reference designed HD 7970 can use either of my bios. And you will get boot screen. It makes no difference g or x.

    However if you already own your HD7970 or 280X no matter what PCB design for example, you can still use VBE7 to modify your clock and voltage on your specific bios. Then if you would like to have Mac OS boot screen, you can flash with mac efi with scripts that can be found in netkas forum. Going this way, you are not using my bios, but still can achieve the idea of obtaining both card with internal power and boot screen.

    Hope this clarify, and do update your progress and score...
  7. Flint Ironstag macrumors 6502a

    Flint Ironstag

    Dec 1, 2013
    Houston, TX USA
    Prince134, thanks for posting this. That's what I love about this forum.

    Unfortunately, I picked up a bunch of Power Color dual fan, which are not reference. Still I may try this (the undervolting then flashing with custom EFI).

    Great stuff.
  8. Prince134 thread starter macrumors 6502

    Aug 17, 2010
    You are welcome.
    Yes, you can do it that way.
    Please do update your progress and results.

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