What are the default graphics cards provided with the "2019" Mac Pro? Which graphics card options are available? How do you upgrade the graphics card(s)?

The default graphic card in the "2019" Mac Pro is the AMD Radeon Pro 580X, which has 8 GB of GDDR5 memory and provides up to 5.6 teraflops of single precision performance.

Via custom configuration, this model also can be equipped with the following AMD Radeon Pro graphics cards:

• Radeon Pro W5500X
• Radeon Pro W5700X (1 or 2)
• Radeon Pro Vega II (1 or 2)
• Radeon Pro Vega II Duo (1 or 2)
• Radeon Pro W6800X (1 or 2)
• Radeon Pro W6900X (1 or 2)
• Radeon Pro W6800X Duo (1 or 2)

These graphics cards differ accordingly in terms of performance:

Radeon Pro	Memory	Single Precision	Half Precision
580X	8 GB GDDR5	5.6 teraflops	--
W5500X	8 GB GDDR6	5.6 teraflops	11.2 teraflops
W5700X	16 GB GDDR6	9.4 teraflops	18.9 teraflops
Vega II	32 GB HBM2	14.1 teraflops	28.2 teraflops
Vega II Duo	2 x 32 GB HBM2	28.2 teraflops	56.4 teraflops
W6800X	32 GB of GDDR6	16.0 teraflops	32.0 teraflops
W6900X	32 GB of GDDR6	22.2 teraflops	44.4 teraflops
W6800X Duo	2 x 32 GB of GDDR6	30.2 teraflops	60.4 teraflops

 

These graphics cards differ accordingly in terms of display support and connectivity:

Radeon Pro	Display Support	Internal*	External Ports
580X	6 4K; 2 5K; or 2 6K	4 DisplayPort	2 HDMI 2.0
W5500X	4 4K; 1 5K; or 1 6K	2 DisplayPort	2 HDMI 2.0
W5700X	6 4K; 3 5K; or 3 6K	2 DisplayPort	4 TB 3, 1 HDMI 2.0
Vega II	6 4K; 3 5K; or 2 6K	2 DisplayPort	4 TB 3, 1 HDMI 2.0
Vega II Duo	8 4K; 4 5K; or 4 6K	4 DisplayPort	4 TB 3, 1 HDMI 2.0
W6800X	6 4K; 3 5K; or 3 6K	2 DisplayPort	4 TB 3, 1 HDMI 2.0
W6900X	6 4K; 3 5K; or 3 6K	2 DisplayPort	4 TB 3, 1 HDMI 2.0
W6800X Duo	8 4K; 4 5K; or 6 6K	4 DisplayPort	4 TB 3, 1 HDMI 2.0

 

*These connections support the internal Thunderbolt 3 ports.

By default, the graphics card uses a Mac Pro specific MPX module that occupies slots 1 and 2. If a second graphics card is configured at the time of system purchase, it occupies slots 3 and 4.

Upgrading the existing graphics card or installing a second one is straightforward. Apple provides this video that demonstrates the process of installing a MPX module in the "2019" Mac Pro:

Also see: How many PCIe slots of what type are provided by the "2019" Mac Pro? How do you upgrade or replace a PCIe card in the "2019" Mac Pro?

What is the maximum resolution supported by the default configuration of the "2019" Mac Pro? How many displays can it support with the default graphics card?

With the default AMD Radeon Pro 580X graphics processor installed in the "2019" Mac Pro, the system can support "up to six 4K displays, two 5K displays, or two [6K Apple] Pro Display XDRs."

Photo Credit: Apple, Inc. (Apple Pro Display XDR)

When configured with graphics cards other than the default, the Mac Pro can support more, or fewer, displays:

Radeon Pro	Display Support	Internal	External Ports
580X	6 4K; 2 5K; or 2 6K	4 DisplayPort	2 HDMI 2.0
W5500X	4 4K; 1 5K; or 1 6K	2 DisplayPort	2 HDMI 2.0
W5700X	6 4K; 3 5K; or 3 6K	2 DisplayPort	4 TB 3, 1 HDMI 2.0
Vega II	6 4K; 3 5K; or 2 6K	2 DisplayPort	4 TB 3, 1 HDMI 2.0
Vega II Duo	8 4K; 4 5K; or 4 6K	4 DisplayPort	4 TB 3, 1 HDMI 2.0
W6800X	6 4K; 3 5K; or 3 6K	2 DisplayPort	4 TB 3, 1 HDMI 2.0
W6900X	6 4K; 3 5K; or 3 6K	2 DisplayPort	4 TB 3, 1 HDMI 2.0
W6800X Duo	8 4K; 4 5K; or 6 6K	4 DisplayPort	4 TB 3, 1 HDMI 2.0

 

It is quite clear that all of these graphics cards support a large number of displays.

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