GeForce 840M vs Radeon HD 6950

In this comparison between GeForce 840M and Radeon HD 6950 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 840M will be the best choice, for others Radeon HD 6950 will be their preference. Study the comparison tables below and make your choice.

GeForce 840M is a Laptop Graphics Card

Note: GeForce 840M is only used in laptop graphics. It has 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 840M here:

Main Specs

  GeForce 840M Radeon HD 6950
Power consumption (TDP) 33 Watt 500 Watt
Interface PCIe 3.0 x8 PCIe 2.0 x16
Supplementary power connectors 2x 6-pin
Memory type DDR3 GDDR5
Maximum RAM amount 4 GB 2 GB
Display Connectors No outputs 2x DVI, 1x HDMI, 2x mini-DisplayPort
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  • Radeon HD 6950 has 1415% more power consumption, than GeForce 840M.
  • GeForce 840M is connected by PCIe 3.0 x8, and Radeon HD 6950 uses PCIe 2.0 x16 interface.
  • GeForce 840M has 2 GB more memory, than Radeon HD 6950.
  • GeForce 840M is used in Laptops, and Radeon HD 6950 - in Desktops.
  • GeForce 840M is build with Maxwell architecture, and Radeon HD 6950 - with TeraScale 3.
  • GeForce 840M is manufactured by 28 nm process technology, and Radeon HD 6950 - by 40 nm process technology.
  • Memory clock speed of GeForce 840M is 750 MHz higher, than Radeon HD 6950.

Game benchmarks

high / 1080p 1−2 14−16
ultra / 1080p 0−1 8−9
QHD / 1440p 0−1 3−4
low / 720p 12−14 27−30
medium / 1080p 3−4 16−18
The average gaming FPS of Radeon HD 6950 in Assassin's Creed Odyssey is 233% more, than GeForce 840M.

Full Specs

  GeForce 840M Radeon HD 6950
Architecture Maxwell TeraScale 3
Code name N15S-GT Cayman
Type Laptop Desktop
Release date 12 March 2014 14 December 2010
Pipelines 384 1408
Core clock speed 1029 MHz
Boost Clock 1124 MHz 800 MHz
Transistor count 2,640 million
Manufacturing process technology 28 nm 40 nm
Texture fill rate 17.98 70.40
Floating-point performance 863.2 gflops 2,252.8 gflops
Length 267 mm
Memory bus width 64 Bit 256 Bit
Memory clock speed 2000 MHz 1250 MHz
Memory bandwidth 16.02 GB/s
Shared memory -
DirectX 12 (11_0)
Shader Model 5.1 5.0
OpenGL 4.5 4.4
OpenCL 1.2 1.2
Vulkan 1.1.126
CUDA +
Bus support PCI Express 2.0, PCI Express 3.0 PCIe 2.0 x16
HDMI +
Bitcoin / BTC (SHA256) 92 Mh/s 244 Mh/s
Laptop size medium sized
Optimus +
Eyefinity +
Design reference
CrossFire +
GPU Boost 2.0
GameWorks +
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