The Mac Pro introduced in 2019 has eight PCIe slots:
Four double-wide slots
Three single-wide slots
One half-length slot preconfigured with the Apple I/O card
The #1 place for Mac Pro graphics cards. GPU upgrades from AMD and Nvidia. With Apple's macOS Mojave, Nvidia graphics cards are no longer support. What can you do about it? It's a long story, but we make it short and simple in.
Mac Pro includes one or two Radeon Pro MPX Modules that occupy slots 1-2 and slots 3-4. You can choose your MPX Modules when you order your Mac Pro or order them separately from Apple. Learn how to install PCI cards in your Mac Pro (2019).
Apple AMD Radeon MPX Modules
Apple currently has four different Mac Pro Expansion (MPX) Modules that contain AMD Radeon Pro graphics processing units (GPUs). Radeon Pro MPX Modules can use slots 1-2 and slots 3-4, and you can install one or two of each module:
Radeon Pro 580X MPX Module: one module only
Radeon Pro W5700X MPX Module: one or two modules
Radeon Pro W5500X MPX Module: one or two modules
Radeon Pro Vega II MPX Module: one or two modules
Radeon Pro Vega II Duo MPX Module: one or two modules
You can use Radeon MPX Modules along with other third-party PCIe graphics cards. If you use Boot Camp, using a Radeon MPX Module and a third-party AMD graphics card isn't supported when your Mac is using Windows. Learn about using AMD graphics cards with Microsoft Windows on Mac Pro (2019).
Apple I/O card
Mac Pro comes with the Apple I/O card, which has two Thunderbolt 3 ports, two USB-A ports, and a 3.5mm headphone jack. The Apple I/O card comes preinstalled in slot 8 and can't be installed in another slot.
Third-party PCIe cards
You can install many different PCIe cards in your Mac Pro, such as fibre channel cards, fibre networking cards, and pro video and audio interface cards. The PCIe bus on your Mac Pro provides up to 300W auxillary power. If your PCIe card requires additional power, such as a GPU, use the Belkin Aux Power Cable.
Mac Pro supports the same GPUs that are supported by external graphics processors (eGPUs). If you use Boot Camp and want to install a NVIDIA card to use in Windows on your Mac, don't install the card in slot 2. Learn about using AMD graphics cards with Microsoft Windows on Mac Pro (2019).
Some older PCI cards might use 32-bit Option ROMs that aren't compatible with your Mac Pro. How to screenshot for mac. If you install a PCI card that uses 32-bit option ROMs, your Mac Pro might not start up correctly. Dragon professional individual free trial.
Afterburner
Nvidia Card For Macbook Pro
Afterburner is a hardware accelerator card made by Apple. Learn more about Afterburner.
RAID cards
If you want to add additional storage, you can install a third-party RAID card, such as a SAS RAID card, or you can install the Promise Pegasus R4i 32TB RAID MPX Module in one of the two MPX bays. If you use Boot Camp on your Mac, Windows doesn't support Apple software RAID volumes.
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Very good question, cdecde12. My best answer is: it depends. Usually Apple has graphics card drivers built into the OS, so it *may* work or *may not*. They haven't exactly published a list of which ones do and don't work for sure. Maybe in Bootcamp or VMware Fusion or Parallels it might work, but that's if you're setting up a virtual machine.
Nvidia Mac Drivers
Out of the box---no, probablly not. I haven't heard of a Mac compatible GTX 1060/1070/1080 yet. One may come along in the future. Usually what you'd have to do is get the card flashed with a Mac compatible ROM, which requires a PC and a whole lot of knowledge, none of which I have, or you could send it to MacVidCards.com and see if they'll flash it
Nvidia Cards For Mac Pro 3.1
which probably will cost you some money. Also, check out xlr8yourmac.com for reports of compatible graphics cards
Mac Pro Video Card
as reported by Mac users. Darn shame, too. I have a Radeon Sapphire 7950 video card which works fine, but it has 3 gigs of video ram on board and that's it. The R9 series have been reported to work okay, but I can't verify that one way or the other. If that card does *sorta* work out of the box (no guarantees), you probably won't see anything on the screen until the graphics drivers load, so should you run into problems on startup, you're basically out of luck, unless you can live with that