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 @ 909 (Boost) MHz256 Bit @ 5460 MHz
Radeon R9 M390X 2048 @ 723 (Boost) MHz256 Bit @ 5000 MHz
Radeon R9 M395 (compare) 1792 @ 834 MHz256 Bit @ 5460 MHz
Radeon R9 M390 (compare) 1024 @ 958 (Boost) MHz256 Bit @ 5460 MHz
Radeon R9 M385X (compare) 896 @ 1100 MHz128 Bit @ 6000 MHz
Radeon R9 M385 (compare)128 Bit @ 6000 MHz
Radeon R9 M380 (compare) 768 @ 1000 MHz128 Bit @ 6000 MHz
Radeon R9 M370X (compare) 640 @ 800 MHz128 Bit @ 4500 MHz
Radeon R9 M365X (compare) 640 @ 900 - 925 (Boost) MHz128 Bit @ 4500 MHz
Radeon R9 M375 (compare) 640 @ 1015 MHz128 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 Memory4096 MB
Shared Memoryno
DirectXDirectX 12 (FL 12_0), Shader 5.0
Transistor Count5000 Million
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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Class 1
Class 2
GeForce GTX 1650 Ti (Desktop) *
GeForce GTX 580
Radeon HD 6970
GeForce GTX 570
GeForce GTX 560 Ti
Radeon HD 5850
Radeon HD 7770
Radeon HD 7770
GeForce GTX 460 768MB
Radeon HD 6790
Radeon HD 4850
Class 3
Radeon HD 5770
GeForce GTX 550 Ti
GeForce GTS 450
Radeon HD 5670
GeForce GT 240
GeForce GT 430
Class 4
Radeon HD 5570
GeForce GT 220
Class 5
Radeon HD 4350
GeForce G 107M *
Chrome9HD *
Class 6
unknown *

* Approximate position of the graphics adapter

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> Notebook / Laptop Reviews and News > Benchmarks / Tech > Comparison of Laptop Graphics Cards > AMD Radeon R9 M390X
Klaus Hinum (Update: 2016-01-26)