Recently it became known that it is generally impossible to connect any video cards to the new Mac Pro. This is due to the peculiarity of the computer architecture.
However, there are PCI slots in the results, and they are allocated to connect other boards. Apple said what exactly with the “firmware” can be used through these ports:
• fiber optic network cards
• video and audio input-output cards
• memory card
• Ethernet cards
Even with this condition, you need to check with manufacturers if they have a special driver for macOS.
Each PCIe slot on a Mac Pro draws up to 75W of power. The Mac Pro also draws up to 300W of AUX power through two 6-pin (75W) and one 8-pin (150W) connectors. If your PCIe card requires additional power, Apple recommends using the Belkin Aux power cable. You can also remove an Apple I/O computer to install your own if necessary. [9to5]
Source: Iphones RU

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