New 27" iMacs - upgradeable video?

Discussion in 'iMac' started by flavoredair, May 24, 2011.

  1. flavoredair macrumors newbie

    Joined:
    May 24, 2011
    #1
    I'm about to purchase a new iMac 27" and I was wondering if the video cards were upgradeable - specifically the HD 6770M and the HD 6970M. Since they're "mobile" versions of the graphics cards I assume that they're likely to be integrated into the board, but that might not necessarily be true.

    I've searched around for the answer but have come up with nothing yet. Even checked to see if iFixit has posted a dissection but couldn't find that either.

    Thanks much.
     
  2. GGJstudios macrumors Westmere

    GGJstudios

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  3. Badger^2 macrumors 68000

    Badger^2

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    #3
    And why would you need to?

    If the video isnt fast enough as is, then you need a different machine.
     
  4. bpeeps macrumors 68030

    bpeeps

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    #4
    Eventually they'll become outdated.
     
  5. archer75, May 24, 2011
    Last edited: May 24, 2011

    archer75 macrumors 68020

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    #5
    The boards they're on can be removed. They appear to be in the MXM form factor. And if apple made an upgrade you could plug one in. But it needs to be the right form factor and OSX needs to have support for whatever you are installing.

    I wouldn't expect them to be upgradable.


    That's the thing about all-in-ones, when it gets outdated you get a new one. You have to accept that going into it.
     
  6. TechnoDestructo macrumors member

    Joined:
    May 10, 2011
    #6
    It is removable. Apple does this to reduce manufacturing costs, repair costs and assembly defect rates, as well as allowing the GPU section to be made at a different location.

    Nobody makes upgrade cards for the iMacs. If you want a fast card, get the fastest one available when you buy the machine.
     
  7. Malcolm. macrumors member

    Malcolm.

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    #7
    If I'm not mistaken, the iMac's GPU is on a daughterboard, seen here. It's technically "removable" once you take the iMac completely apart, but an ordinary off-the-shelf card won't fit in there.
     
  8. iindigo macrumors 6502a

    iindigo

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    #8
    Couldn't one theoretically order a replacement graphics card made for a newer model of iMac and swap it out for his current one? As far as I can tell, the slots are the same between generations.
     
  9. Kerel macrumors member

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    May 19, 2011
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    Weimar Germany
    #9
    nowbody knows the real answer to your question.
    They are probably upgradeble because they use the mxm form factor but it would be very expensive.
    You would need to buy them from Apple or OSX won´t recognize them,
    Apple uses a custom vbios(i´ve heard).
    And they use different heatsinks for the various types of graphics cards.
    HD6970m is bigger(mxm b) and dissipates more heat than the HD6770(mxm a).
     
  10. T'hain Esh Kelch macrumors 601

    T'hain Esh Kelch

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    #10
    You can, but good luck finding one. A broken iMac is your best chance I guess.
     
  11. iSayuSay macrumors 68040

    iSayuSay

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    Feb 6, 2011
    #11
    It can be replaced. The problem is finding the replacement. They don´t get sold freely as regular PCI-E GPU.

    If such card is exist, it would be expensive, maybe twice or thrice the price of regular GPU for desktop. You´ll get better deal trade the old iMac to the new one instead. Or sell the old one to buy the new one.
     
  12. iindigo macrumors 6502a

    iindigo

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    Jul 22, 2002
    Location:
    San Francisco, CA
    #12
    Here's any kind you want, all brand new:

    https://www.applecomponents.com/items/video-cards/

    The prices at the link above don't seem that bad, certainly cheaper than buying a new iMac.
     
  13. T'hain Esh Kelch macrumors 601

    T'hain Esh Kelch

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    #13
  14. elithrar macrumors 6502

    elithrar

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    #14
  15. ZeD X macrumors regular

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    Apr 26, 2011
    #15
    The board size differs too.

    How exactly be sure if it will work (installed and recognized)? Only by testing?
     

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