Radeon R9 270X 2GB 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 cables 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 Sequoia 15.x and 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 Sequoia 15.x

Tested working on Mac Pro 4,1 - 5,1 up to Sequoia 15.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 in different variations depending on stock:


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

Base Clock

1000 MHz

Boost Clock

1050 MHz

Memory Clock

1400 MHz 

5600 MHz effective

Render Config

Shading Units

1280

TMUs

80

ROPs

32

Compute Units

20

Theoretical Performance

Pixel Rate

33.60 GPixel/s

Texture Rate

84.0 GTexel/s

Bandwidth

179.2 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 !