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AMD Radeon R9 M390X

AMD Radeon R9 M390X

The AMD Radeon R9 M390X is a mobile high-end graphics card for laptops. It is most likely based on the same chip as the AMD Radeon R9 M295X in the iMac 5K Late 2014. That means it should be based on the third generation of GCN (desktop Tonga chip). The amount of shader cores is identical but the core clock is reduced by 15% (from 850 MHz to 723 MHz) and the memory is also clocked slower (5448 MHz vs 5000 MHz).

The performance should be a bit below the M295X. Compared to the competition, the R9-M390X should be positioned somewhere between the GeForce GTX 965M and 970M and therefore suitable for high-end games in 1080p resolution and high detail settings.

The card was first mentioned by Alienware on their twitter account and should feature 4GB VRAM according to the tweet.

The power consumption should be rated around 100 Watt TDP and therefore suited only for large and bulky laptops (like the Alienware M17x it was announced in).

Radeon R9 M300 Series

Radeon R9 M395X compare 2048 @ 0.91 GHz256 Bit @ 5460 MHz
Radeon R9 M390X 2048 @ 0.72 GHz256 Bit @ 5000 MHz
Radeon R9 M395 compare 1792 @ 0.83 GHz256 Bit @ 5460 MHz
Radeon R9 M390 compare 1024 @ 0.96 GHz256 Bit @ 5460 MHz
Radeon R9 M385X compare 896 @ 1.1 GHz128 Bit @ 6000 MHz
Radeon R9 M385 compare128 Bit @ 6000 MHz
Radeon R9 M380 compare 768 @ 1 GHz128 Bit @ 6000 MHz
Radeon R9 M370X compare 640 @ 0.8 GHz128 Bit @ 4500 MHz
Radeon R9 M365X compare 640 @ 0.9 - 0.93 GHz128 Bit @ 4500 MHz
Radeon R9 M375 compare 640 @ 1.02 GHz128 Bit @ 2200 MHz
CodenameAmethyst (XT) / Tonga
ArchitectureGCN 3
Pipelines2048 - unified
Core Speed723 (Boost) MHz
Memory Speed5000 MHz
Memory Bus Width256 Bit
Memory TypeGDDR5
Max. Amount of Memory4 GB
Shared Memoryno
APIDirectX 12 (FL 12_0), Shader 5.0, OpenGL 4.3 / Vulkan
Power Consumption125 Watt
Transistor Count5 Billion
technology28 nm
FeaturesDirectX 12, OpenCL 1.2, OpenGL 4.3, Vulkan, Mantle
Notebook Sizelarge
Date of Announcement09.06.2015


- Range of benchmark values for this graphics card
- Average benchmark values for this graphics card
* Smaller numbers mean a higher performance

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