One of these is a $5,600 upgrade to your Mac Pro, two of them will cost you $11,600.
The Radeon Pro W6900X is similar to the consumer Radeon 6900XT: it features 80 compute units and a 256-bit memory bus, again doubling the GDDR6 memory bank from 16GB to 32GB. Configuring your Mac Pro with one of these cards is a $2,400 upgrade, or you can get two for $5,200. The Radeon Pro W6800X is similar to the consumer Radeon 6800: it features 60 compute units and a 256-bit memory bus, but it doubles the amount of GDDR6 memory from 16GB to 32GB. The cards can now be selected-alone or in pairs-when configuring your Mac Pro. The X6800X Duo is sort of unique in that it puts two Radeon Pro 6800 GPUs on a single card. The Radeon Pro W6800X, W6800X Duo, and W6900X are new workstation-class variants of AMD’s very popular consumer RDNA2 graphics cards, the Radeon 68XT.
Apple and AMD have started offering new graphics options for the Mac Pro desktop and there’s no shortage of power.