GeForce 940MX vs Radeon HD 6990M

Find out if it is worth upgrading your current GPU setup by comparing GeForce 940MX and Radeon HD 6990M. 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 GeForce 940MX and Radeon HD 6990M. 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.

GeForce 940MX and Radeon HD 6990M are Laptop Graphics Cards

Note: GeForce 940MX and Radeon HD 6990M 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 HD 6990M here:

Main Specs

  GeForce 940MX Radeon HD 6990M
Power consumption (TDP) 23 Watt 100 Watt
Interface PCIe 3.0 x8 MXM-B (3.0)
Supplementary power connectors None None
Memory type DDR3, GDDR5 GDDR5
Maximum RAM amount 4 GB 2 GB
Display Connectors No outputs No outputs
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  • Radeon HD 6990M has 334% more power consumption, than GeForce 940MX.
  • GeForce 940MX is connected by PCIe 3.0 x8, and Radeon HD 6990M uses MXM-B (3.0) interface.
  • GeForce 940MX has 2 GB more memory, than Radeon HD 6990M.
  • Both cards are used in Laptops.
  • GeForce 940MX is build with Maxwell architecture, and Radeon HD 6990M - with Terascale 2.
  • Core clock speed of GeForce 940MX is 407 MHz higher, than Radeon HD 6990M.
  • GeForce 940MX is manufactured by 28 nm process technology, and Radeon HD 6990M - by 40 nm process technology.
  • Memory clock speed of GeForce 940MX is 3100 MHz higher, than Radeon HD 6990M.

Game benchmarks

high / 1080p 7−8 14−16
ultra / 1080p 4−5 8−9
QHD / 1440p 0−1 3−4
low / 720p 16−18 30−33
medium / 1080p 8−9 16−18
The average gaming FPS of Radeon HD 6990M in Assassin's Creed Odyssey is 100% more, than GeForce 940MX.

Full Specs

  GeForce 940MX Radeon HD 6990M
Architecture Maxwell Terascale 2
Code name N16S-GTR-B/S Blackcomb XTX
Type Laptop Laptop
Release date 10 March 2016 12 July 2011
Pipelines 384 1120
Core clock speed 1122 MHz 715 MHz
Boost Clock 1242 MHz
Transistor count 1,870 million 1,700 million
Manufacturing process technology 28 nm 40 nm
Texture fill rate 23.83 40.04
Floating-point performance 762.6 gflops 1,601.6 gflops
Memory bus width 64 Bit 256 Bit
Memory clock speed 4000 MHz 900 MHz
Memory bandwidth 40.1 GB/s 115.2 GB/s
Shared memory - -
DirectX 12 (11_0) 11.2 (11_0)
Shader Model 5.1 5.0
OpenGL 4.5 4.4
OpenCL 1.2 1.2
Vulkan 1.1 N/A
CUDA +
Bus support PCI Express 3.0
Bitcoin / BTC (SHA256) 102 Mh/s
Laptop size medium sized large
Optimus +
GPU Boost 2.0
GameWorks +
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