Radeon RX 580 Graphic Cards, 2048SP, Real 8GB, GDDR5, 256 Bit, Pc Gaming Radeon | eBay
Amazon.com: ASPIRING Video Card RX 580 8GB 256Bit 2048SP GDDR5 Graphics Cards for AMD Radeon RX 580 Series Professional for ETH Mining and Gaming : Electronics
Bought an RX580, turns out it's a 570. : r/Amd
Flashing RX 580 2048sp (SAPPHIRE Branded) to RX 570 for macOS support *Counterfeit GPU? | MacRumors Forums