Radeon R9 M390X vs Radeon RX Vega M GL 870

Find out if it is worth upgrading your current GPU setup by comparing Radeon R9 M390X and Radeon RX Vega M GL 870. Here you can take a closer look at graphics cards specs, such as core clock speed, memory type and size, display connectors, etc. The price, overall benchmark and gaming performances are usually defining factors when it comes to choosing between Radeon R9 M390X and Radeon RX Vega M GL 870. Make sure that the graphics card has compatible dimensions and will properly fit in your new or current computer case. Also these graphics cards may have different system power recommendations, so take that into consideration and upgrade your PSU if necessary.

Radeon R9 M390X and Radeon RX Vega M GL 870 are Laptop Graphics Cards

Note: Radeon R9 M390X and Radeon RX Vega M GL 870 are only used in laptop graphics. They have lower GPU clock speed compared to the desktop variant, which results in lower power consumption, but also 10-30% lower gaming performance. Check available laptop models with Radeon R9 M390X or Radeon RX Vega M GL 870 here:

Main Specs

  Radeon R9 M390X Radeon RX Vega M GL 870
Power consumption (TDP) 100 Watt
Interface PCIe 3.0 x16
Supplementary power connectors None
Memory type GDDR5 HBM2
Maximum RAM amount 4 GB 4 GB
Display Connectors No outputs
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  • Radeon R9 M390X and Radeon RX Vega M GL 870 have maximum RAM of 4 GB.
  • Both cards are used in Laptops.
  • Radeon R9 M390X is build with GCN 3 architecture, and Radeon RX Vega M GL 870 - with Vega.
  • Core clock speed of Radeon RX Vega M GL 870 is 208 MHz higher, than Radeon R9 M390X.
  • Radeon R9 M390X is manufactured by 28 nm process technology, and Radeon RX Vega M GL 870 - by 14 nm process technology.

Game benchmarks

high / 1080p 21−24 35−40
ultra / 1080p 12−14 21−24
QHD / 1440p 8−9 16−18
4K / 2160p 5−6 10−11
low / 720p 40−45 60−65
medium / 1080p 27−30 40−45
The average gaming FPS of Radeon RX Vega M GL 870 in Assassin's Creed Odyssey is 60% more, than Radeon R9 M390X.

Full Specs

  Radeon R9 M390X Radeon RX Vega M GL 870
Architecture GCN 3 Vega
Code name Amethyst (XT) / Tonga Vega Kaby Lake-G
Type Laptop Laptop
Release date 9 June 2015 7 January 2018
Pipelines 2048 1280
Core clock speed 723 MHz 931 MHz
Boost Clock 1011 MHz
Transistor count 5,000 million
Manufacturing process technology 28 nm 14 nm
Texture fill rate 92.54
Floating-point performance 2,961 gflops
Memory bus width 256 Bit
Memory bandwidth 160.0 GB/s
Shared memory - -
DirectX DirectX 12_1
Shader Model 6.3
OpenGL 4.4
OpenCL Not Listed
Vulkan +
FreeSync +
Bus support PCIe 3.0
Laptop size large medium sized
Eyefinity +
HD3D +
PowerTune +
DualGraphics +
ZeroCore +
Switchable graphics +
Mantle +
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