For the very first time a dual GPU for Mac Pro with insane 32 GB GDDR5 memory.
Because of it's size PCIe front fan has to be removed.
It's based on Polaris cheap and macOS sees it as two separate Radeon Pro WX7100 16 GB cards.
Works out of the box under macOS High Sierra/Mojave/Catalina/Big Sur and Monterey. Uses internal power supply without any modifications.