Use the Radeon Pro Vega II MPX Module with your Mac Pro (2019)
Learn about the many different display setups you can use with your MPX Module on your Mac Pro (2019).
The Radeon Pro Vega II MPX Module contains an AMD Radeon Pro Vega II graphics processing unit (GPU) with 32GB of HBM2 memory, four Thunderbolt 3 ports, and one HDMI 2.0 port. You can use the Thunderbolt 3 ports to connect displays and external devices to your Mac Pro. When you use the Radeon Pro Vega II MPX Module with your Mac Pro, you can also use the Thunderbolt 3 ports on the top* and rear of your Mac Pro to connect additional displays.
About ports and buses
The MPX module has two buses for its Thunderbolt 3 ports. If you connect two 5K or 6K displays to the Thunderbolt 3 ports on your MPX module, connect one display per bus.
If you connect a display to the HDMI port on your MPX module, the Thunderbolt 3 ports on Bus 0 can support one additional display at 4K or lower resolution. If you need to output audio to a display connected to the HDMI port and have other displays connected over Thunderbolt 3, don't connect a display to the Thunderbolt 3 port next to the HDMI port.
Connect displays to a single Radeon Pro Vega II MPX Module
If you install a single Radeon Pro Vega II MPX Module, you can connect up to six displays using Thunderbolt 3 in these configurations:
Two Pro Display XDRs with resolutions of 6016 x 3384 at 60Hz connected to any two of the following locations: Bus 0, Bus 1, or the Thunderbolt 3 ports on the rear of your Mac Pro. Connect one display for each location.
Three 5K displays with resolutions of 5120 x 2880 at 60Hz connected to Bus 0, Bus 1, and either the top* or rear Thunderbolt 3 ports on your Mac Pro.
Six 4K displays with resolutions of 3840 x 2160 at 60Hz connected to Bus 0 and Bus 1, and either the top* or rear Thunderbolt 3 ports on your Mac Pro.
Connect displays to two Radeon Pro Vega II MPX Modules
If you install two Radeon Pro Vega II MPX Modules, you can connect up to 12 displays using Thunderbolt 3 in these configurations:
Four Pro Display XDRs with resolutions of 6016 x 3384 at 60Hz connected to any four of the following locations: Bus 0 on each card, Bus 1 on each card, and the Thunderbolt 3 ports on both the top* and rear of your Mac Pro. Connect one display for each location.
Six 5K displays with resolutions of 5120 x 2880 at 60Hz. Connect your displays to each bus and the Thunderbolt 3 ports on both the top* and rear of your Mac Pro.
Twelve 4K displays with resolutions of 3840 x 2160 at 60Hz connected to the Thunderbolt 3 ports on your Mac Pro and on each card.
Connect the Infinity Fabric Link
If you install two Radeon Pro Vega II MPX Modules, you can connect them using Infinity Fabric Link for increased performance and faster data transfer between the GPUs:
Remove the caps from each MPX module.
Align the connectors on the Infinity Fabric Link bridge with the connectors on the MPX modules, then slowly press it in.
Use a Phillips Head screwdriver to screw both screws right into the locked position.
