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AMD. The. Jan 15, 2019 · I tested a Sapphire RX 580 Pulse 8GB card in my Mac Pro 5,1. It gave me a black screen until it booted to the Desktop because the card's VBIOS was not patched with an EFI VBIOS patch. Unfortunately, there is no EFI patch for the RX 580. But, the good news is it works great with macOS High Sierra 10.13.6 and Mojave once you get to the Desktop..