GeForce GTX 660M vs Radeon HD 6950M

When choosing between GeForce GTX 660M and Radeon HD 6950M, it is worth examining the specifications of the models in detail. Do they meet the recommended requirements of modern games and software? Storage capacity, form factor, TDP, available ports, warranty and manufacturer support are all important. For example, the size of a PC case can limit the maximum thickness and length of the card. Often, instead of the factory overclocked card and RGB backlight, it is better to choose a reference model with a more efficient GPU. And make sure that your current power supply unit has the correct connection pins (using adapters is not recommended). This GPUs compare tool is meant to help you to choose the best graphics card for your build. Let's find out the difference between GeForce GTX 660M and Radeon HD 6950M.

GeForce GTX 660M and Radeon HD 6950M are Laptop Graphics Cards

Note: GeForce GTX 660M and Radeon HD 6950M 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 GTX 660M or Radeon HD 6950M here:

Main Specs

  GeForce GTX 660M Radeon HD 6950M
Power consumption (TDP) 50 Watt 50 Watt
Interface MXM-B (3.0) MXM-B (3.0)
Memory type GDDR5 GDDR5
Maximum RAM amount 2 GB 2 GB
Display Connectors No outputs No outputs
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  • Both graphics cards have the same power consumption of 50 Watt.
  • Both video cards are using MXM-B (3.0) interface connection to a motherboard.
  • GeForce GTX 660M and Radeon HD 6950M have maximum RAM of 2 GB.
  • Both cards are used in Laptops.
  • GeForce GTX 660M is build with Kepler architecture, and Radeon HD 6950M - with Terascale 2.
  • Core clock speed of GeForce GTX 660M is 255 MHz higher, than Radeon HD 6950M.
  • GeForce GTX 660M is manufactured by 28 nm process technology, and Radeon HD 6950M - by 40 nm process technology.
  • Memory clock speed of GeForce GTX 660M is 1100 MHz higher, than Radeon HD 6950M.

Game benchmarks

high / 1080p 6−7 8−9
ultra / 1080p 4−5 5−6
QHD / 1440p 0−1 0−1
low / 720p 16−18 20−22
medium / 1080p 8−9 10−12
The average gaming FPS of Radeon HD 6950M in Assassin's Creed Odyssey is 22% more, than GeForce GTX 660M.

Full Specs

  GeForce GTX 660M Radeon HD 6950M
Architecture Kepler Terascale 2
Code name N13E-GE Blackcomb Pro
Type Laptop Laptop
Release date 22 March 2012 6 January 2011
Pipelines 384 960
Core clock speed 835 MHz 580 MHz
Boost Clock 950 MHz
Transistor count 1,270 million 1,700 million
Manufacturing process technology 28 nm 40 nm
Texture fill rate 30.4 billion/sec 27.84
Floating-point performance 729.6 gflops 1,113.6 gflops
Memory bus width 128bit 256 Bit
Memory clock speed 2000 MHz 900 MHz
Memory bandwidth 64.0 GB/s 115.2 GB/s
Shared memory - -
DirectX 12 API 11.2 (11_0)
Shader Model 5.1 5.0
OpenGL 4.5 4.4
OpenCL 1.1 1.2
Vulkan 1.1.126 N/A
CUDA +
CUDA cores 384
Bus support PCI Express 2.0, PCI Express 3.0
SLI options +
HDMI +
HDCP +
Maximum VGA resolution Up to 2048x1536
Bitcoin / BTC (SHA256) 36 Mh/s
Laptop size large large
Optimus +
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