GeForce 940MX vs Radeon R9 M280X

When comparing GeForce 940MX and Radeon R9 M280X, we look primarily at benchmarks and game tests. But it is not only about the numbers. Often you can find third-party models with higher clock speeds, better cooling, or a customizable RGB lighting. Not all of them will have all the features you need. Another thing to consider is the port selection. Most graphics cards have at least one DisplayPort and HDMI interface, but some monitors require DVI. Before you buy, check the TDP of the graphics card - this characteristic will help you estimate the consumption of the graphics card. You may even have to upgrade your PSU to meet its requirements. An important factor when choosing between GeForce 940MX and Radeon R9 M280X is the price. Does the additional cost justify the performance hit? Our comparison should help you make the right decision.

GeForce 940MX and Radeon R9 M280X are Laptop Graphics Cards

Note: GeForce 940MX and Radeon R9 M280X 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 940MX or Radeon R9 M280X here:

Main Specs

  GeForce 940MX Radeon R9 M280X
Power consumption (TDP) 23 Watt
Interface PCIe 3.0 x8 PCIe 3.0 x16
Supplementary power connectors None
Memory type DDR3, GDDR5 Not Listed
Maximum RAM amount 4 GB
Display Connectors No outputs No outputs
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  • GeForce 940MX is connected by PCIe 3.0 x8, and Radeon R9 M280X uses PCIe 3.0 x16 interface.
  • Both cards are used in Laptops.
  • GeForce 940MX is build with Maxwell architecture, and Radeon R9 M280X - with GCN.
  • Core clock speed of GeForce 940MX is 222 MHz higher, than Radeon R9 M280X.
  • GeForce 940MX and Radeon R9 M280X are manufactured by 28 nm process technology.

Game benchmarks

high / 1080p 7−8 2−3
ultra / 1080p 4−5 1−2
QHD / 1440p 0−1 0−1
low / 720p 16−18 14−16
medium / 1080p 8−9 4−5
The average gaming FPS of GeForce 940MX in Assassin's Creed Odyssey is 80% more, than Radeon R9 M280X.

Full Specs

  GeForce 940MX Radeon R9 M280X
Architecture Maxwell GCN
Code name N16S-GTR-B/S Saturn XT
Type Laptop Laptop
Release date 10 March 2016 1 February 2015
Pipelines 384 896
Core clock speed 1122 MHz 900 MHz
Boost Clock 1242 MHz
Transistor count 1,870 million 2,080 million
Manufacturing process technology 28 nm 28 nm
Texture fill rate 23.83 61.60
Floating-point performance 762.6 gflops 1,792 gflops
Memory bus width 64 Bit
Memory clock speed 4000 MHz
Memory bandwidth 40.1 GB/s 96 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
CUDA +
FreeSync +
Bus support PCI Express 3.0 Not Listed
Bitcoin / BTC (SHA256) 102 Mh/s
Laptop size medium sized large
Optimus +
HD3D +
PowerTune +
DualGraphics +
ZeroCore +
Switchable graphics +
Mantle +
GPU Boost 2.0
GameWorks +
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