Radeon R9 M390 Mac Edition vs E8950

Primary details

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

Place in the ranking364not rated
Place by popularitynot in top-100not in top-100
Power efficiency10.33no data
ArchitectureGCN 3.0 (2014−2019)GCN 1.0 (2011−2020)
GPU code nameAmethystPitcairn
Market segmentLaptopLaptop
Release date29 September 2015 (9 years ago)5 May 2015 (9 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 cores20481024
Core clock speed735 MHz958 MHz
Boost clock speed1000 MHzno data
Number of transistors5,000 million2,800 million
Manufacturing process technology28 nm28 nm
Power consumption (TDP)95 Watt80 Watt
Texture fill rate128.061.31
Floating-point processing power4.096 TFLOPS1.962 TFLOPS
ROPs3232
TMUs12864

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).

InterfaceMXM-B (3.0)PCIe 3.0 x16
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 amount8 GB2 GB
Memory bus width256 Bit256 Bit
Memory clock speed1500 MHz1365 MHz
Memory bandwidth192.0 GB/s174.7 GB/s

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

API compatibility

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

DirectX12 (12_0)12 (11_1)
Shader Model6.35.1
OpenGL4.64.6
OpenCL2.01.2
Vulkan1.2.1311.2

Pros & cons summary


Recency 29 September 2015 5 May 2015
Maximum RAM amount 8 GB 2 GB
Power consumption (TDP) 95 Watt 80 Watt

Radeon E8950 has an age advantage of 4 months, and a 300% higher maximum VRAM amount.

R9 M390 Mac Edition, on the other hand, has 18.8% lower power consumption.

We couldn't decide between Radeon E8950 and Radeon R9 M390 Mac Edition. We've got no test results to judge.


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

Vote for your favorite

Do you think we are right or mistaken in our choice? Vote by clicking "Like" button near your favorite graphics card.


AMD Radeon E8950
Radeon E8950
AMD Radeon R9 M390 Mac Edition
Radeon R9 M390 Mac Edition

Comparisons with similar GPUs

We selected several comparisons of graphics cards with performance close to those reviewed, providing you with more options to consider.

Community ratings

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


4.6 14 votes

Rate Radeon E8950 on a scale of 1 to 5:

  • 1
  • 2
  • 3
  • 4
  • 5
1.9 9 votes

Rate Radeon R9 M390 Mac Edition on a scale of 1 to 5:

  • 1
  • 2
  • 3
  • 4
  • 5

Questions & comments

Here you can ask a question about this comparison, agree or disagree with our judgements, or report an error or mismatch.