Radeon HD 7950 Mac 

Released March, 2013
  • 800 MHz
  • 3 GB GDDR5

Is it true that overclocked Sapphire HD 7950 Vapor-X OC with Boost Edition surpasses the performance of overclocked GeForce GTX 670?
by Anthony-Garreffa (Dec, 2012)
As the above diagram illustrates, the "new" part of PowerTune with the GHz Edition is the ability to vary the voltage of the GPU in real-time to address a wider range of qualified clock speeds.
by Ryan-Shrout (Aug, 2012)

Benchmarks Real world tests of the Radeon HD 7950 Mac

Bitcoin mining Data courtesy CompuBench

Radeon HD 7950 Mac
370.18 mHash/s

Face detection Data courtesy CompuBench

Radeon HD 7950 Mac
67.8 mPixels/s

Ocean surface simulation Data courtesy CompuBench

Radeon HD 7950 Mac
1,230.77 frames/s

Particle simulation Data courtesy CompuBench

Radeon HD 7950 Mac
460.4 mInteraction/s

T-Rex (Compubench 1.5) Data courtesy CompuBench

Radeon HD 7950 Mac
-1 frames/s

Video composition Data courtesy CompuBench

Radeon HD 7950 Mac
81.68 frames/s

In The News From around the web


Apple Initiates Video Repair Program for 2011-2013 MacBook Pros

by Ryan Smith |
Namely, while the iMac used its dGPU exclusively the MacBook Pros all used switchable graphics, which means that the MacBook Pros are often being driven by their iGPU rather than their dGPU.
While the 2011 iMac and MacBook Pros use different GPUs, both systems use GPUs from AMD’s Radeon HD 6000M series, with the iMac using the higher-end 6970M while the MacBook Pros used the 6490M, 6750M, and 6770M GPUs.

AMD will show up in iMac 27 and a few more

by Fuad Abazovic |
This is a significant win for AMD, but the real winner is Intel since most Apple notebooks will continue using integrated Intel HD or Iris graphics.
We are not sure what Nvidia did to upset Apple, but this round of devices will be powered either by Intel integrated graphics or AMD discrete graphics.

More GPU failures on MacBook Pros

by Nick Farrell |
To make matters worse, MacBook Pro owners are also seeing frequent reboots to a gray screen.
Some Apple users are starting to mutter heresy about design flaws which cause heating problems.

Apple Mac Pro: Teardown Images and Detailed Benchmarks

by Shaikh Rafia |
Non-proprietary Torx screws are used throughout, and several components can be replaced independently.
The very much famous Michael Kukielka has released his Apple Mac Pro benchmark video.

Specifications Full list of technical specs


GPU brand AMD
GPU name Tahiti PRO
Market Desktop
Clock speed 800 MHz
Is dual GPU No
Reference card None

raw performance

Shading units 1,792
Texture mapping units 112
Render output processors 32
Compute units 28
Pixel rate 25.6 GPixel/s
Texture rate 89.6 GTexel/s
Floating-point performance 2,867.2 GFLOPS


Memory clock speed 1,250 MHz
Effective memory clock speed 5,000 MHz
Memory bus 384 bit
Memory 3,072 MB
Memory type GDDR5
Memory bandwidth 240 GB/s

noise and power

TDP 200W
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