GeForce GTX 660 vs GeForce GTX 660M

In this comparison between GeForce GTX 660 and GeForce GTX 660M 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 GTX 660 will be the best choice, for others GeForce GTX 660M will be their preference. Study the comparison tables below and make your choice.

GeForce GTX 660M is a Laptop Graphics Card

Note: GeForce GTX 660M 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 GTX 660M here:

Main Specs

  GeForce GTX 660 GeForce GTX 660M
Power consumption (TDP) 140 Watt 50 Watt
Interface PCIe 3.0 x16 MXM-B (3.0)
Supplementary power connectors One 6-pin
Memory type GDDR5 GDDR5
Maximum RAM amount 2 GB 2 GB
Display Connectors 2x DVI, 1x HDMI, 1x DisplayPort No outputs
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  • GeForce GTX 660 has 180% more power consumption, than GeForce GTX 660M.
  • GeForce GTX 660 is connected by PCIe 3.0 x16, and GeForce GTX 660M uses MXM-B (3.0) interface.
  • GeForce GTX 660 and GeForce GTX 660M have maximum RAM of 2 GB.
  • GeForce GTX 660 is used in Desktops, and GeForce GTX 660M - in Laptops.
  • GeForce GTX 660 and GeForce GTX 660M are build with Kepler architecture.
  • Core clock speed of GeForce GTX 660 is 145 MHz higher, than GeForce GTX 660M.
  • GeForce GTX 660 and GeForce GTX 660M are manufactured by 28 nm process technology.
  • Memory clock speed of GeForce GTX 660M is 1994 MHz higher, than GeForce GTX 660.

Game benchmarks

high / 1080p 20−22 6−7
ultra / 1080p 12−14 4−5
QHD / 1440p 6−7 0−1
4K / 2160p 5−6
low / 720p 40−45 16−18
medium / 1080p 24−27 8−9
The average gaming FPS of GeForce GTX 660 in Assassin's Creed Odyssey is 177% more, than GeForce GTX 660M.

Full Specs

  GeForce GTX 660 GeForce GTX 660M
Architecture Kepler Kepler
Code name GK106 N13E-GE
Type Desktop Laptop
Release date 6 September 2012 22 March 2012
Pipelines 960 384
Core clock speed 980 MHz 835 MHz
Boost Clock 1033 MHz 950 MHz
Transistor count 2,540 million 1,270 million
Manufacturing process technology 28 nm 28 nm
Texture fill rate 78.4 billion/sec 30.4 billion/sec
Floating-point performance 1,981 gflops 729.6 gflops
Length 9.5" (24.1 cm)
Memory bus width 192-bit GDDR5 128bit
Memory clock speed 6.0 GB/s 2000 MHz
Memory bandwidth 144.2 GB/s 64.0 GB/s
Shared memory -
DirectX 12 (11_0) 12 API
Shader Model 5.1 5.1
OpenGL 4.3 4.5
OpenCL 1.2 1.1
Vulkan 1.1.126 1.1.126
CUDA + +
CUDA cores 960 384
Bus support PCI Express 3.0 PCI Express 2.0, PCI Express 3.0
Height 4.376" (11.1 cm)
SLI options + +
Multi monitor support 4 displays
HDMI + +
HDCP + +
Maximum VGA resolution 2048x1536 Up to 2048x1536
Audio input for HDMI Internal
3D Blu-Ray +
3D Gaming +
3D Vision +
Bitcoin / BTC (SHA256) 66 Mh/s 36 Mh/s
Laptop size large
Optimus +
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