GeForce 920MX vs Radeon R9 M390X

If you are going to buy a new graphics card and are choosing between GeForce 920MX and Radeon R9 M390X, there are a couple of things to consider. Cards with more VRAM in general perform better and allow you to play on higher graphics settings. Size also makes a difference. A model with a large heatsink can occupy up to three expansion slots on a motherboard. Be sure you have enough room in your PC case. When comparing GPUs with different architectures, more processing cores and even higher TFLOPS will not always translate to better performance. To help you decide which GPU you need, we have measured frame rates in a number of popular games. For more on how the GeForce 920MX stacks up against Radeon R9 M390X, check out specs charts below.

GeForce 920MX and Radeon R9 M390X are Laptop Graphics Cards

Note: GeForce 920MX and Radeon R9 M390X 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 GeForce 920MX or Radeon R9 M390X here:

Main Specs

  GeForce 920MX Radeon R9 M390X
Power consumption (TDP) 16 Watt 100 Watt
Interface PCIe 3.0 x8 PCIe 3.0 x16
Supplementary power connectors None None
Memory type DDR3, GDDR5 GDDR5
Maximum RAM amount 2 GB 4 GB
Display Connectors No outputs No outputs
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  • Radeon R9 M390X has 525% more power consumption, than GeForce 920MX.
  • GeForce 920MX is connected by PCIe 3.0 x8, and Radeon R9 M390X uses PCIe 3.0 x16 interface.
  • Radeon R9 M390X has 2 GB more memory, than GeForce 920MX.
  • Both cards are used in Laptops.
  • GeForce 920MX is build with Maxwell architecture, and Radeon R9 M390X - with GCN 3.
  • Core clock speed of GeForce 920MX is 242 MHz higher, than Radeon R9 M390X.
  • GeForce 920MX and Radeon R9 M390X are manufactured by 28 nm process technology.

Game benchmarks

high / 1080p 2−3 21−24
ultra / 1080p 0−1 12−14
QHD / 1440p 0−1 8−9
4K / 2160p 5−6
low / 720p 12−14 40−45
medium / 1080p 3−4 27−30
The average gaming FPS of Radeon R9 M390X in Assassin's Creed Odyssey is 416% more, than GeForce 920MX.

Full Specs

  GeForce 920MX Radeon R9 M390X
Architecture Maxwell GCN 3
Code name N16V-GMR Amethyst (XT) / Tonga
Type Laptop Laptop
Release date 25 March 2015 9 June 2015
Pipelines 256 2048
Core clock speed 965 MHz 723 MHz
Boost Clock 993 MHz
Transistor count 5,000 million
Manufacturing process technology 28 nm 28 nm
Texture fill rate 23.83 92.54
Floating-point performance 602.1 gflops 2,961 gflops
Memory bus width 64 Bit 256 Bit
Memory clock speed 1800 MHz
Memory bandwidth 14.4 GB/s 160.0 GB/s
Shared memory - -
DirectX 12 (11_0)
Shader Model 5.1 6.3
OpenGL 4.5 4.4
OpenCL 1.2 Not Listed
Vulkan 1.1.126 +
CUDA +
FreeSync +
Bus support PCI Express 3.0 PCIe 3.0
Laptop size large
Optimus +
Eyefinity +
HD3D +
PowerTune +
DualGraphics +
ZeroCore +
Switchable graphics +
Mantle +
GPU Boost 2.0
GameWorks +
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