Identifies as HD 5870 model.

This cards power limits have been tweaked and modified within safe range for Mac Pro power limit requirements in mind to prevent crashing under full load for a smooth and crash free experience.

This video card is Plug ’n Play (assuming you have the proper gpu power cables)

Tested working on Mac Pro 1,1 - 2,1 supported from OS X 10.6.7 to 10.11.x

Tested working on Mac Pro 3,1 supported from OS X 10.6.7 to 10.13.x

Tested working on Mac Pro 4,1 - 5,1 supported from OS X 10.6.7 to 10.13.x

Cable adapters, port functionality, performance, resolutions, refresh rates, may act differently between different operating systems. Behavior in one version may be different in another.

Card has been fully stress tested and monitored on DVI port and works perfectly in both either OS X versions or Windows Boot Camp.

Maximum Resolutions:

Dual Link DVI: 2560 x 1600 @ 60Hz

HDMI 1.3a: 1920 x 1200 @ 60Hz

DisplayPort 1.1: 2560 x 1600 @ 60Hz

Output ports come as: 

2 x Dual-link DVI, 1 x HDMI, 1 x DisplayPort

Graphics Features

DirectX 11.2

OpenGL 4.4

OpenCL 1.2

Shader Model 5.0

Clock Speeds

Base Clock

725 MHz

Memory Clock

1000 MHz 

4 Gbps effective

Render Config

Shading Units

1440

TMUs

72

ROPs

32

Compute Units

18

Theoretical Performance

Pixel Rate

23.2 GPixel/s

Texture Rate

52.2 GTexel/s

Bandwidth

128 GB/s

*Main image is only a representation in the Mac Pro and actual card will look different upon arrival.

*Cables included upon request at checkout. Strongly urged to re-use your existing 6-pin cables if applicable.

Don't forget to check out my other listings for similar cards. Happy Shopping !