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My late 2012 iMac has no GPU for iRay?

iSeeThisiSeeThis Posts: 552
in Technical Help (nuts n bolts)

I've just learnt that there should be! My system says it has GTX 680MX as shown in the pix. But when I click advanced tab of iRay, there is nothing shown except CPU. Is there anything wrong here?

Screen Shot 2558-09-29 at 2.43.24 PM.png
447 x 291 - 60K
Screen Shot 2558-09-29 at 2.43.38 PM.png
488 x 313 - 37K

Comments

  • ronmolinaronmolina Posts: 118

    I believe there is software or a driver you need for a Mac that will make it work. Somebody else had that problem and that was the solution which is in a fairly recent post here.

  • StratDragonStratDragon Posts: 3,168
    edited September 2015

    What version of OS X are you on?

    Driver updates from Nvida cards are bundled in OS X versions, not all OS updates included drivers for specific cards.

    Unfortunately Apple does not allow Nvdia to make it's own drivers so your subject to get them from OS X updates and no other place.

    You may also try downloading the Nvidia Cuda tool set for Mac, technically not drivers and not subject to Apples anal retentiveness. 

    The Nvidia Cuda tools are specific to the specific versions of OS X, use the correct version for your version.

    http://www.nvidia.com/object/mac-driver-archive.html

    Post edited by StratDragon on
  • EsemwyEsemwy Posts: 578

    You'll have to do this, as the Nvidia provided drivers are configured to only install on MacPro. And this tells you how to disable it when it goes horribly wrong.

  • StratDragonStratDragon Posts: 3,168
    edited September 2015
    Esemwy said:

     

    I would not use this method Esemwy suggests. The GTX 680MX is a card that came as direct to customer option from Apple on that model iMac. The links you provide are for hacking the EFI (effectively the Mac BIOS) so it recognizes cards that were not included in the EFI tools to begin with. It's not needed for this card and it could cause serious an irreparable damage to the computer. The fact your Mac identifies the card already in the system configuration you posted is clearly showing you the EFI sees the card in your mac and knows all about it.
    Post edited by StratDragon on
  • iSeeThisiSeeThis Posts: 552

    Thanks StratDragon. You are my savior!

  • StratDragonStratDragon Posts: 3,168
    edited September 2015
    iSeeThis said:

    Thanks StratDragon. You are my savior!

    did the Cuda tool set work?

    also not coming down on Emswy, I've posted potentially disastrous suggestions all over the web with all intentions of trying to help but not fully knowing the outcome.

    Post edited by StratDragon on
  • iSeeThisiSeeThis Posts: 552
    StratDragon said:
    iSeeThis said:

    did the Cuda tool set work?

    also not coming down on Emswy, I've posted potentially disastrous suggestions all over the web with all intentions of trying to help but not fully knowing the outcome.strat

    Fortunately for me, it works, StratDragon! I don't know. But the latest version of CUDA from nVidia site works on my late 2012 machine. Thanks for your care!

     

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