What is 6970M and 6770M

These new imacs has gpus – 6970M, 6770M, 6750M.

what is these 6970M and 6770M you may wonder.

6970M is basicaly same as 6850, blackcomb xt with 960 vliw5 shaders, has uvd3 and dp1.2 support, which could be used for 3200×2000 display in future. Clocks – 680/900

6770M is same as 6670: 480 shaders, uvd3, DP1.2. Clocks – 725/800.

6750M is 6770M with lower core clocks – 600 mhz

Not that impressive for desktop computer.

So this means no proper support for Cayman GPUs yet – the true 6970 card.


  1. Andy
    May 3rd, 2011 | 2:02 pm


  2. Roger_CWB
    May 3rd, 2011 | 2:47 pm

    So if I buy an ATI 6850 will run with native drivers in MacOS right?

    Im tired with this battle to Nvidia fermi cards work in my Hackintosh.

    Thanks for the info Netkas.

  3. Axel F.
    May 3rd, 2011 | 3:21 pm

    I bought an AMD 6850 and it worked with the mac book pro drivers OOB…

  4. Actionable Mango
    May 3rd, 2011 | 5:36 pm

    The instant I saw the new iMacs with 6970, I shot over here to see what was up. Too bad they are mobility.

  5. The Rominator
    May 3rd, 2011 | 6:43 pm

    this explains why the 6850 and 680 worked so well

    guess we will need to get the ROM dumps to try and make an EFI for Mac Pro versions

    who’s gonna be the first to help out?

  6. DonaemouS
    May 3rd, 2011 | 7:37 pm

    the question is: Are they coming with a customized MacOS X 10.6.7? Tomorrow I will receive the first MC309x/A iMac 21.5″

  7. netkas
    May 3rd, 2011 | 8:23 pm

    Guess they will be x86_64 again, not ebc.

  8. netkas
    May 3rd, 2011 | 11:38 pm

    They are with customized 10.6.6

  9. avian
    May 4th, 2011 | 3:18 am

    Hey DonaemouS if you could accidentally upload that iMac 2011 DVD install disc on a popular torrent site, a lot of people would be very 🙂

  10. hive
    May 4th, 2011 | 4:42 pm

    Hi Netkas, i just wanna your opinion about Intel HD / 6370M switchable graphics. Anything you gonna say about this is important i think.. thank you

  11. Andreas / mitch germany
    May 5th, 2011 | 7:06 am

    New iMac 2011 update from Apple DL
    ATI6000 within also Fermi10HAL – second no iMac never need.
    I mad an thread at / news+updates with details
    For me, C2D NV 9600GT updated worked.

  12. April 3rd, 2018 | 11:32 am

    Hi man, I just want to know that which is the better option for Macbook. That is to go for a 6970M or 6770M for my Mac.

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