Lot of 10: Apple ATI Radeon HD 5770 1GB Graphics Card for Mac Pro (MC742ZM/A) | eBay
GIGABYTE HD 5770 SOC Specs | TechPowerUp GPU Database
Amazon.com: Epic IT Service AMD Radeon HD 5770 1GB GDDR5 Mac Edition, with 1GB GDDR5, Dual Mini DP and one DVI Output Ports, for Mac Pro 1,1 to 5,1 Models, macOS up
XFX ATI Radeon HD 5770 1GB DDR5 PCI Express Graphics Card (HD-577A-ZNFR) | eBay