How to Install a Standard PC Nvidia GTX GPU in a Mac Pro- Using an unflashed GTX TITAN X, 980 Ti, 980, 970 or 960 in a Mac Pro

How to Install a Standard PC Nvidia GTX GPU in a Mac Pro: Using an unflashed GTX TITAN X, 980 Ti, 980, 970 or 960 in a Mac Pro

Guide to using unflashed Nvidia GTX 9XX GPUs in a classic Mac Pro.

In this guide we will show you how to save money, time, and keep your workflow rock solid by installing one of Nvidia’s latest GPU’s in your classic 2009/2010/2012 Mac Pro 5,1 or 4,1.

Following this guide you will be able to install a GPU purchased from anywhere, not just us or another Mac Pro GPU reseller.

The following method will provide you with a fully working Nvidia GPU in OS X, with GPGPU acceleration and all. The only omission will be the Apple logo on bootup, this will not be visible due to the fact that the Nvidia driver needs to load up before the display will enable (post boot). This shouldn’t be a problem for any user as long as you have a spare native Apple GPU for the rare situations in which you may need a boot screen (we supply a native Apple GT120 GPU with every Nvidia card purchased from us). You will not need this extra card for day to day use, however. You may need the boot screen functionality in rare situations requiring safe mode or verbose mode, for example.

Before you install your shiny new Nvidia GTX 9XX GPU, you just need to follow these 10 simple steps using your native Apple GPU:

  1. You will need to be running either OS X 10.10 (Yosemite) or OS X 10.11 (El Capitan).
  2. Make sure you have updated your OS X edition of choice to the latest version using Apple Software Update. This includes all security updates.
  3. Go to and search for the drivers >Quadro>Quadro Series>Quadro K5000 for Mac>YOUR OS X Version>Search (As shown in the image below).
  4. Download and install the driver, follow the instructions including restarting the Mac Pro.
  5. Go to System Preferences and check the Nvidia driver manager pane, on the third tab (updates) click update to ensure your on the latest version. (Repeat this for the CUDA for Mac driver if you also installed this, CUDA driver can be found here). (As shown in image below).
  6. Shutdown your Mac Pro.
  7. Remove the native Apple GPU (such as GT120, ATI 5770 or 5870).
  8. Connect the power cables for your new Nvidia GTX 9XX series GPU if needed. (Most GTX GPUs use 1x 6 pin and 1x 8 pin, we always include the correct cables for Mac Pro installation with GPUs purchased from us).
  9. Once the new GPU is installed, connect your display and turn on the Mac Pro.
  10. You will see a black screen until the Mac Pro has booted and the Nvidia driver has been loaded into OS X. (Shown in image below).

After following the steps above, you should now be back into OS X and able to use your super-powerful Nvidia GTX TITAN X, 980 Ti, 980, 970 or 960 GPU.

Please see the images below for visual explanations of steps 3, 5 and 10:

Step 3: Step 3 in installing an unflashed Nvidia GTX 9XX GPU in a classic Mac Pro

Step 5:Step 5 in installing an unflashed Nvidia GTX 9XX GPU in a classic Mac Pro

Step 10:Step 10 in installing an unflashed Nvidia GTX 9XX GPU in a classic Mac Pro

45 thoughts on “How to Install a Standard PC Nvidia GTX GPU in a Mac Pro: Using an unflashed GTX TITAN X, 980 Ti, 980, 970 or 960 in a Mac Pro

  1. How are the power draw from these handled? 8pin+6pin should be able to handle a 300W draw.

    The classic Mac Pro has 75W from PCI-slot and 2x75W from the dual 6-pins.

    Do you draw 75W from the lower 5.25″ bay or mod the PSU with extra 8-pin cables?

    Cheers for the blog!

    1. Hi Kristian,

      The simple answer is that in OS X, when being used in pro apps (Adobe CC Suite, FCPX, OctaneRender, DaVinci etc.) these cards will never draw more than 225W power. Basically, GPGPU (CUDA/OpenCL) has a very low power draw. The only time you may run into power issues is when gaming in Windows, in this case we would recommend slightly downclocking the cards.

      I hope that helps.


      1. For powering the Titan X do you simply use the two 6-pin cables that come with the Mac (since 8-pin connections are downwards compatible to 6-pin) or do you use a 6-pin to 8-pin cable for the 8-pin connector on the Titan X?

  2. I had seen you have to set boot flags to =1 in some cases. Would I have to do that to, or just follow these steps and be fine.

    Mac Pro 5,1, looking to install a PNY GeForce GTX 970 4GB Rev 2.

  3. Hi,

    all of this info is super helpful. Quick question though, will this card run optimally if using (2) 6 pin PCI e connectors instead of (1) 6 and (1) 8?

  4. hi!

    I have a 12core mac pro 5.1 and recently bought a titan x to upgrade my machine. the problem is that the titan x doesn’t load. i’m using internal power supply with one 6to8 pin pcie adapter. I alresdy use a non flashed gtx 970 with no problems. the geforce on the card turns on but i only get black screen…. I’d appretiaite some help!


  5. A tip:
    I bought a MacPro 5,1 with GTX980 (and GT120) from you in March. Since then I have performed several updates, some of which result in a black screen because Apple have tinkered with the drivers. To get round this, as well as switching off and swapping the GPU for the GT120, another way is to use the “Share Screen” function from another networked Mac. This displays the log-in screen, and allows you to access, download and update the Nvidia drivers without having to dig the MacPro out of the rack.

    It works for me …

  6. There are no Mac OS options available on the drop-down menus. Any ideas where I can get the drives for the GTX 960 for MacPro 5.1 2010?

  7. First of all, thank you so much for your positive declaration that a Mac Pro 2009 5.1 is good to go for installing the macOS Sierra system. Like many people I have invested time and money upgrading my System only to be
    informed that Apple was about to consign my proud `new` machine to the knackers yard!!! Your news has given me so much confidence, that I have purchased a GTX 1080 Founders Edition card. If and when dear old Nvidia creates the Mac drivers for this speedster it will certainly be the icing on the cake for me. What started out as a very modest early 2009 Mac Pro has almost closed the gap on the shiny Trash Can Pro performance!
    Many thanks

  8. I hace installed a new GTX 960 in my 3,1 mac pro. Now the audio does not work. I have checked all my settings but nothing works. Any ideas?

    Thank you

    1. Hello Tobi

      I wouldn’t recommend fitting that card to your system due to high power draw
      There is a maximum output of 300W in the PCI-e and we have found that most cards with dual 8-pin connections draw too much power.

      If you do fit the card you may find it will cut out when rendering.

      Cheers George

  9. Thanks for this useful article.
    If I understand correctly you’re saying it’s possible to use “unflashed” graphics cards on a Mac Pro (eg. I have a 4,1 model).
    In looking at the Nvidia website and I don’t see any Mac OS listed in their drop down menus (same as in your STEP 3…even though it is in your screenshot). I was looking at the GTX970?
    Any suggestions?

    Thanks again,

    1. Hi Alan

      All the drivers are located under >Quadro>Quadro Series>Quadro K5000 for Mac
      If you follow step three you will find all the drivers.

      Once you click to select your operating system if you click show all operating systems you will see all the versions appear.

      Cheers George

  10. Thank you for publishing this guide. It gave me the assurance I needed to purchase and install a GeForce GTX 980 in my MacPro4,1.

  11. Very useful guide. I followed it and was able to get my 980 Ti card working on my Mac Pro (Mid-2012, Model ID 5.1). However, even though I get working video output, I’m unable to select my display (TV) as an HDMI audio output source. Have you been able to get HDMI Audio Output working using this card?

  12. Have a mac pro 5.1 running OSX 10.12.1

    Installed a new gtx 980 ti using the latest drivers cuda 8.0.53 and quadro geoforce 158f03. graphics work great in either DP or HDMI connection, but I get absolutely no audio. the monitor is no longer listed as an audio output device, and in system/hardware/audio: there is no listing anywhere for either HDMI or Display port as an audio source.

    so the bottom line is that i get great 4K video, but no sound.

    Any ideas how to remedy this?

    Here is one crazy thing i noticed, I replace the original ATI HD 5770 to get my sound back, but left the Nvidia drivers on the mac. those drivers are running the HD5770 at 4K with no issues and sound!!! How is that possible for a non 4K rated video card to run 4k with another mfg driver?

    that question is just for curiosity, what i really want to fix is the sound on the GTX 980ti.

    all help and suggestions will be greatly appreciated.

    1. Hello

      Unfortunately Nvidia don’t support audio over HDMI or DP in the Mac Pro.
      You would have to output audio via digital or 3.5mm

      Are you running both the 5770 and the 980Ti together?

      Cheers George

  13. I’m wondering if you can help me remedy some behavior we’ve been experiencing at the studio with a similar setup.

    Every so often while using video card heavy workflows (editing 6k video, rendering composite vfx) we’ll experience what we’ve been calling BSOD, or, the “black screen of death”. Basically, everything just locks up for one second, then the screens go black. The machine becomes totally unresponsive, and requires a reboot. You can’t screen share. No sleep-mode wake up. Nothing.

    We first tried addressing the issue by having our GTX 980’s flashed with the correct firmware through a service provided by This gave us our Apple logo back on startup, but did not seem to improve the regularity of BSOD occurrences.

    We were then lead to believe that perhaps it was a power supply issue, where heavy tasks we’re basically cooking the motherboard and causing the machine to seize up. So we purchased external power supplies to run as dedicated power to the card. It seems to have helped reduce the amount of BSOD occurrences slightly, but not completely eliminating them.

    We’re currently on the latest release of Adobe software using the 2017 versions of Premiere and After Effects heavily.

    Any help/insight would be much appreciated!

    Here’s our setup:
    Model: Mac Pro (Mid 2012)
    OS: 10.11.5
    Video Card: NVIDIA GeForce GTX 980 (4096M MB)
    Processor: 2 x 2.66GHz 6-core Intel Xeon
    Ram: 128GB DDR3
    Power Supply: Corsair CX Series CX750M

    We have the latest NVIDIA and CUDA Updates installed.

  14. Hi Guys,
    I have installed a GIGABYTE GeForce GTX 970 XTREME in MacPro of course with all current drivers but the screen remains black. Can anyone help me? Thank you so much!
    This is a Google translation



          1. Hi Reiswich

            The card requires 2 x 8 Pin connections so it most likley draws way to much power. You have a maximum of 300W available to you so cards with a 250W TDP are recommended so that when you run it at full speed it doesn’t draw over the 300W.

            You would need an additional power supply to run that GPU yes.
            The alternative is you could sell that card and get a standard Nvidia GTX 970.

            Cheers George

  15. Excuse me, forget my system specify: MacPro 5.1 2010 mid 12 core 2.66 GHz, 24GB memory.
    And the new graphics card has two 8-pin power connectors.

    Entschuldige,vergessen mein System angeben: MacPro 5.1 2010 Mitte 12 Core 2,66 GHz, 24GB Arbeitsspeicher.
    Und die neue Grafikkarte hat zwei 8 Pol Stromanschlüsse.


  16. Hi Cheers George,

    I also suspected it and returned to the dealer. Now I search with 250W TDP.
    Thanks for the advice !!!


  17. Hi there, I’ve a question regarding a tower I got from you guys last year.

    Currently 1x 980ti (6gb) fitted in there, but I’d liked to add another 980ti or a 1070. My question is, do you think it would be better to fit the new card in the 2x slots I have free, and change the PSU, or will the cards be too close together and potentially overheat? So the second option would be to put the new card in an external chassis, and link to PCIe, with it’s own power.

    Which if either do you think is the better option?

    Thanks a lot, Alex

    1. Hi Alex

      We do not recommend running two GPUs internally. Running too much power through the logicboard and having that heat inside your system is not a good idea.
      Using an external GPU chassis is a better choice and dependent on your OS you can run up to three cards if you have the space in your chassis.
      Before you purchase a 1070 be aware that the Pascal cards are not supported yet so your system won’t run with the 1070 installed.

      Cheers George

  18. Thanks for the informative post. Will this apply to earlier models as well? I have a Mac Pro 1.1 2006 running Yosemite 10.10…trying to install an nvidia gtx 980. Thx in advance. Q

    1. Hi Quincy

      We have not tested the cards in the 1,1 and 2,1 systems.
      Considering you are using a version of OSX which has been slightly modified to run on the system anyway it is unlikely but the only way you will find out is giving it a go.

      Do let us know if you do try it!



  19. Hello,

    I followed your guide to install my NVIDIA GTX 980 on my Mac Pro 5.1 (late 2012) about a year ago, maybe less. I had everything working great, even audio over HDMI with a few kexts I found. Whenever I had an OS update I’ve always been able to swap the native card back in, install driver updates, and good to go again. But I updated to 10.12.2, and now I get a black screen on startup, as if the display simply doesn’t recognize the GPU. I swapped back in the AMD card and confirmed my NVIDIA web driver and CUDA drivers were both up to date, but it’s still not working. Any ideas? By the way thanks for the guide and thanks in advance for the help!

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