AMD Radeon HD 5870 1GB for Mac Pro 1,1-5,1 

Native EFI Rom for Mac, shows Apple boot screen on DVI and Mini Displayport. 

Card and heatsink have been cleaned, fan was tested and new thermal paste was applied (Arctic MX-4) for a quiet operation.

Compatibility with any Mac Pro 1,1 - 2,1 - 3,1 - 4,1 - 5,1 (2006 -2012) 

Compatibility with OS X Snow Leopard  10.6.8  or upper, Lion, Mavericks, Yosemite, El Capitán, Sierra & High Sierra.

Bootcamp supported

- Supports up to 3 displays at once (DVI and Mini Displayport)

- DVI Port supports resolution of up to 2560 x 1600

- HDMI supports resolution of up to 1920 x 1200

- Displayport supports resolution of up to 3840 x 2160 

Package contents:

AMD Radeon 5870 1GB.

2 x Mac Pro power cables are included.