GeForce 940M vs Radeon HD 7870M

In this comparison between GeForce 940M and Radeon HD 7870M you will find out which graphics card performs better in today's games. Bear in mind that third-party versions may have more efficient cooling and higher clock speeds. This will increase cards' performance, though not by much. In addition to raw power you should also take into account the dimensions. Thicker models simply will not fit into a small mini-ITX case. The resolution of your monitor also affects the choice, since 4K gameplay requires a more powerful GPU. And don't overspend on the graphics card. Other parts of your build may also need to be upgraded, save some money for the CPU or power supply. For some people GeForce 940M will be the best choice, for others Radeon HD 7870M will be their preference. Study the comparison tables below and make your choice.

GeForce 940M and Radeon HD 7870M are Laptop Graphics Cards

Note: GeForce 940M and Radeon HD 7870M 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 940M or Radeon HD 7870M here:

Main Specs

  GeForce 940M Radeon HD 7870M
Power consumption (TDP) 75 Watt 45 Watt
Interface PCIe 3.0 x8 PCIe 3.0 x16
Memory type DDR3 GDDR5
Maximum RAM amount 4 GB 2 GB
Display Connectors No outputs No outputs
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  • GeForce 940M has 66% more power consumption, than Radeon HD 7870M.
  • GeForce 940M is connected by PCIe 3.0 x8, and Radeon HD 7870M uses PCIe 3.0 x16 interface.
  • GeForce 940M has 2 GB more memory, than Radeon HD 7870M.
  • Both cards are used in Laptops.
  • GeForce 940M is build with Maxwell architecture, and Radeon HD 7870M - with GCN.
  • Core clock speed of GeForce 940M is 272 MHz higher, than Radeon HD 7870M.
  • GeForce 940M and Radeon HD 7870M are manufactured by 28 nm process technology.
  • Memory clock speed of Radeon HD 7870M is 2000 MHz higher, than GeForce 940M.

Game benchmarks

high / 1080p 2−3 6−7
ultra / 1080p 1−2 4−5
QHD / 1440p 0−1 0−1
low / 720p 12−14 16−18
medium / 1080p 4−5 8−9
The average gaming FPS of Radeon HD 7870M in Assassin's Creed Odyssey is 80% more, than GeForce 940M.

Full Specs

  GeForce 940M Radeon HD 7870M
Architecture Maxwell GCN
Code name N16S-GT-S/B Heathrow XT
Type Laptop Laptop
Release date 12 March 2015 24 April 2012
Pipelines 384 640
Core clock speed 1072 MHz 800 MHz
Boost Clock 1176 MHz
Transistor count 1,870 million 1,500 million
Manufacturing process technology 28 nm 28 nm
Texture fill rate 28.22 32.00
Floating-point performance 903.2 gflops 1,024 gflops
Memory bus width 64 Bit 128 Bit
Memory clock speed 2000 MHz 4000 MHz
Memory bandwidth 14.4 GB/s 64 GB/s
Shared memory - -
DirectX 12 (11_0) 12 (11_1)
Shader Model 5.1 5.1
OpenGL 4.5 4.6
OpenCL 1.2 1.2
Vulkan 1.1.126 1.2.131
CUDA +
Bus support PCI Express 3.0
Bitcoin / BTC (SHA256) 101 Mh/s
Laptop size medium sized large
Optimus +
GPU Boost 2.0
GameWorks +
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