Amazon.com: AISURIX Radeon RX 580 Graphic Cards, 2048SP, Real 8GB, GDDR5, 256 Bit, Pc Gaming Radeon Video Card for AMD, 2XDP, HDMI, PCI Express 3.0 with Freeze Fan Stop for Desktop Computer
Asus Strix RX 580 Gaming Top OC review: Proof that size matters | PCWorld
Used - Like New: PowerColor RED DRAGON Radeon RX 580 Video Card AXRX 580 8GBD5-3DHDV2/OC - Newegg.com
Reports on using Retail Sapphire Radeon RX 580 in Mac Pro with macOS Mojave, High Sierra, and 10.12.6