The Radeon HD 7850 1GB 256-bit GDDR5 is a mid-level Metal graphics card modified for all Mac Pro models 1,1 - 5,1 (2006-2012) to show -


• Apple Logo Boot Screen

• Boot Menu Selector

• Progress Bar

• Verbose Single User Mode

• Recovery Mode

• FireWire Target Mode

• Firmware Updates

• OS X Installer Setup

• OpenCore Setup


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 (gpu power cable mandatory)


Native support starts on Mac OS X Lion 10.7.5 and Mountain Lion 10.8.2 with official Radeon drivers up to Monterey 12.x. OCLP provides support on Sonoma 14.x and Ventura 13.x


Tested working on Mac Pro 1,1 - 2,1 up to El Capitan 10.11.6

Tested working on Mac Pro 3,1 up to Sonoma 14.x

Tested working on Mac Pro 4,1 - 5,1 up to Sonoma 14.x

Tested working on Windows 7 - 11 Boot Camp


Cable adapters, tv's / monitors, port functionality, performance, resolutions, refresh rates, may act differently between different operating systems. Behavior in one version may be different than in another.


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


Supports 2+ multiple displays. Adapters that are 'Active' or 'Passive' will yield different results.



Maximum Resolutions:

  • Dual Link DVI: 2560 x 1600 @ 60Hz
  • DisplayPort / mDP 1.2: 4096 x 2160 @ 60Hz, 5120 x 2880 @ 30Hz
  • HDMI 1.4a: 4096 x 2160 @24Hz, 3840×2160 @ 30Hz
  • VGA (w/adapter): 2048x1536
  • *Note: 4K 3840 x 2160 resolutions require OS 10.9 or better for best compatibility/performance
  • *Note: 4K @ 60Hz on HDMI can be achieved with proper DP / mDP 1.2 to HDMI 2.0 adapter
  • *Note: 5K @ 30Hz on DP / mDP 1.2 to HDMI 2.0 adapter

Output ports come as: 


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


Graphics Features


Metal Support

DirectX 12 (11.1)

OpenGL 4.6

OpenCL 1.2

Vulkan 1.2

Shader Model 5.1

Clock Speeds

GPU Clock

860 MHz

Memory Clock

1200 MHz 

4.8 Gbps effective

Render Config

Shading Units

1024

TMUs

64

ROPs

32

Compute Units

16

Theoretical Performance

Pixel Rate

27.52 GPixel/s

Texture Rate

55.04 GTexel/s

Bandwidth

153.6 GB/s


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


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


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