Radeon HD 6970M Mac Edition vs Pro 555

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Primary details

GPU architecture, market segment, value for money and other general parameters compared.

Place in the ranking513not rated
Place by popularitynot in top-100not in top-100
Power efficiency7.45no data
ArchitectureGCN 4.0 (2016−2020)TeraScale 2 (2009−2015)
GPU code namePolaris 21Blackcomb
Market segmentMobile workstationLaptop
Release date5 June 2017 (7 years ago)25 August 2011 (13 years ago)

Detailed specifications

General parameters such as number of shaders, GPU core base clock and boost clock speeds, manufacturing process, texturing and calculation speed. Note that power consumption of some graphics cards can well exceed their nominal TDP, especially when overclocked.

Pipelines / CUDA cores768960
Core clock speed850 MHz680 MHz
Number of transistors3,000 million1,700 million
Manufacturing process technology14 nm40 nm
Power consumption (TDP)75 Watt75 Watt
Texture fill rate40.8032.64
Floating-point processing power1.306 TFLOPS1.306 TFLOPS
ROPs1632
TMUs4848

Form factor & compatibility

Information on compatibility with other computer components. Useful when choosing a future computer configuration or upgrading an existing one. For desktop graphics cards it's interface and bus (motherboard compatibility), additional power connectors (power supply compatibility).

Laptop sizelargeno data
InterfacePCIe 3.0 x8MXM-B (3.0)
Supplementary power connectorsNoneNone

VRAM capacity and type

Parameters of VRAM installed: its type, size, bus, clock and resulting bandwidth. Integrated GPUs have no dedicated video RAM and use a shared part of system RAM.

Memory typeGDDR5GDDR5
Maximum RAM amount2 GB2 GB
Memory bus width128 Bit256 Bit
Memory clock speed1275 MHz900 MHz
Memory bandwidth81.6 GB/s115.2 GB/s
Shared memory--

Connectivity and outputs

Types and number of video connectors present on the reviewed GPUs. As a rule, data in this section is precise only for desktop reference ones (so-called Founders Edition for NVIDIA chips). OEM manufacturers may change the number and type of output ports, while for notebook cards availability of certain video outputs ports depends on the laptop model rather than on the card itself.

Display ConnectorsNo outputsNo outputs

Supported technologies

Supported technological solutions. This information will prove useful if you need some particular technology for your purposes.

FreeSync+-

API compatibility

List of supported 3D and general-purpose computing APIs, including their specific versions.

DirectX12 (12_0)11.2 (11_0)
Shader Model6.45.0
OpenGL4.64.4
OpenCL2.01.2
Vulkan1.2.131N/A

Pros & cons summary


Recency 5 June 2017 25 August 2011
Chip lithography 14 nm 40 nm

Pro 555 has an age advantage of 5 years, and a 185.7% more advanced lithography process.

We couldn't decide between Radeon Pro 555 and Radeon HD 6970M Mac Edition. We've got no test results to judge.

Be aware that Radeon Pro 555 is a mobile workstation card while Radeon HD 6970M Mac Edition is a mobile workstation one.


Should you still have questions concerning choice between the reviewed GPUs, ask them in Comments section, and we shall answer.

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AMD Radeon Pro 555
Radeon Pro 555
AMD Radeon HD 6970M Mac Edition
Radeon HD 6970M Mac Edition

Comparisons with similar GPUs

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Community ratings

Here you can see the user ratings of the compared graphics cards, as well as rate them yourself.


3.7 88 votes

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3.8 6 votes

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Questions & comments

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