Dsapphire driver download not working
Reports on Sapphire Radeon RX 580 8GB in Mac Pros (macOS 10.14.x, 10.13.x, cards (not flashed with mac rom), there's no boot screen until the OS/driver loads. If the graphics card in your Mac Pro isn't listed above, you need to install one Unfortunately I could not get that to work-even shimmed the Nitro+ fan would