Request: Do you have a 675MX or 680MX equipped iMac?

Discussion in 'iMac' started by cal6n, Apr 18, 2013.

  1. cal6n macrumors 68000

    cal6n

    Joined:
    Jul 25, 2004
    Location:
    Gloucester, UK
    #1
    If possible, could someone who has the CUDA drivers installed post screenshots of the CUDA-Z window showing the "Core" and "Memory" sections for iMacs with either the GTX 675MX or 680MX fitted, please? I'm interested in comparing the specs with the GTX 670 I have in my Mac Pro.

    The card performs admirably in all applications except Civ 5 and Aspyr support are particularly arrogant about my problem, waving the "unsupported" card like crazy. I understand one of these cards is really a downclocked GTX 670 desktop chipset and I'd like to try editing my BIOS ROM to emulate it precisely.

    Ta!
     
  2. Bear macrumors G3

    Joined:
    Jul 23, 2002
    Location:
    Sol III - Terra
    #2
    Sometimes searching the forum will get you the answer you are looking for. In this case, I believe your answer is in this recent thread.
     
  3. cal6n thread starter macrumors 68000

    cal6n

    Joined:
    Jul 25, 2004
    Location:
    Gloucester, UK
    #3
    Oops! Thanks.

    Looks like the 675MX is a downclocked 670, while the 680MX is a downclocked 680.
     
  4. RoastingPig macrumors 68000

    RoastingPig

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    Jul 23, 2012
    Location:
    SoCal
  5. cal6n thread starter macrumors 68000

    cal6n

    Joined:
    Jul 25, 2004
    Location:
    Gloucester, UK
    #5
    Thanks, but I have the info I need for now.

    It turns out my card isn't supported by NiBiTor yet.
     
  6. Nightarchaon macrumors 65816

    Nightarchaon

    Joined:
    Sep 1, 2010
    #6
    :d
     
  7. zuri macrumors member

    Joined:
    Mar 29, 2013
    #7
    Hi
    this was already in this topic:

    http://forums.macrumors.com/showthread.php?t=1568279

    GTX675MX is actualy GTX680 with higher memory clock so I prefer to choose 675 :)
     
  8. cal6n thread starter macrumors 68000

    cal6n

    Joined:
    Jul 25, 2004
    Location:
    Gloucester, UK
    #8
    Why did you post this?

    Things to note:

    1. The question has already been answered.
    2. You have posted a link to exactly the same thread as the first response.
    3. You are completely wrong. The GTX 680 has 8 multiprocessors with 1536 CUDA cores, while the GTX 675MX (in common with the GTX 670) has only 7 multiprocessors with 1536 CUDA cores.
     
  9. zuri macrumors member

    Joined:
    Mar 29, 2013
    #9
    1 and 2 my bad
    3 I thought you compare mobile chips as long as iMacs have mobile chips in every generation not the typical desktop versions. I really don't know the difference especially when the screens and confirmation in that topic are from me :) but if you insist...my bad :)
     
  10. All Taken macrumors 6502a

    Joined:
    Dec 28, 2009
    Location:
    UK
    #10
    I did comment in your other thread, but I suppose i'll do it again. No matter how much you want 1 graphics card to be another it's not happening. The better card is the GTX 680MX.
     
  11. zuri macrumors member

    Joined:
    Mar 29, 2013
    #11
    no doubt about that :)
    I was in a hurry from work when I originaly post first reply in this thread, silly of me I didnt read the whole post before post something :confused:
     

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