Amazon.com: Video Card RX 580 8GB 256Bit 2048SP GDDR5 Graphics Cards for AMD Radeon RX 580 Series Professional for ETH Mining and Gaming : Electronics
Used - Like New: OWC Radeon RX 580 8GB Graphics Upgrade Solution For Mac Pro 2010 To 2012. Add Metal Support to your Mac Pro and Upgrade to macOS 10.14.x Mojave. Model OWCMP1012R580V - Newegg.com
Specification Radeon RX 580 GAMING X+ 8G | MSI Global - The Leading Brand in High-end Gaming & Professional Creation
Black screen after installing RX 580 8GB. HELP !!! : r/macpro
Apple EFI AMD RX580 4GB and 8GB Sapphire Pulse for Mac Pro 4,1/5,1
APPLE MAC PRO SAPPHIRE NITRO+ RX 580 8GB GDDR5 AMD Gaming GPU | eBay