GeForce GTX 660M vs Quadro K620M

In this comparison between GeForce GTX 660M and Quadro K620M 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 660M will be the best choice, for others Quadro K620M will be their preference. Study the comparison tables below and make your choice.

GeForce GTX 660M and Quadro K620M are Laptop Graphics Cards

Note: GeForce GTX 660M and Quadro K620M 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 Quadro K620M here:

Main Specs

  GeForce GTX 660M Quadro K620M
Power consumption (TDP) 50 Watt 30 Watt
Interface MXM-B (3.0) MXM-A (3.0)
Supplementary power connectors None
Memory type GDDR5 DDR3
Maximum RAM amount 2 GB 2 GB
Display Connectors No outputs No outputs
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  • GeForce GTX 660M has 66% more power consumption, than Quadro K620M.
  • GeForce GTX 660M is connected by MXM-B (3.0), and Quadro K620M uses MXM-A (3.0) interface.
  • GeForce GTX 660M and Quadro K620M have maximum RAM of 2 GB.
  • GeForce GTX 660M is used in Laptops, and Quadro K620M - in Mobile workstations.
  • GeForce GTX 660M is build with Kepler architecture, and Quadro K620M - with Maxwell.
  • Core clock speed of Quadro K620M is 194 MHz higher, than GeForce GTX 660M.
  • GeForce GTX 660M and Quadro K620M are manufactured by 28 nm process technology.
  • Memory clock speed of GeForce GTX 660M and Quadro K620M is 2000 MHz.

Game benchmarks

high / 1080p 6−7 3−4
ultra / 1080p 4−5 1−2
QHD / 1440p 0−1 0−1
low / 720p 16−18 14−16
medium / 1080p 8−9 5−6
The average gaming FPS of GeForce GTX 660M in Assassin's Creed Odyssey is 50% more, than Quadro K620M.

Full Specs

  GeForce GTX 660M Quadro K620M
Architecture Kepler Maxwell
Code name N13E-GE GM108
Type Laptop Mobile workstation
Release date 22 March 2012 1 March 2015
Pipelines 384 384
Core clock speed 835 MHz 1029 MHz
Boost Clock 950 MHz 1124 MHz
Transistor count 1,270 million
Manufacturing process technology 28 nm 28 nm
Texture fill rate 30.4 billion/sec 17.98
Floating-point performance 729.6 gflops 863.2 gflops
Memory bus width 128bit 64 Bit
Memory clock speed 2000 MHz 2000 MHz
Memory bandwidth 64.0 GB/s 14.4 GB/s
Shared memory - -
DirectX 12 API 12
Shader Model 5.1 5
OpenGL 4.5 4.5
OpenCL 1.1 1.2
Vulkan 1.1.126 1.1.126
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 92 Mh/s
Laptop size large
Optimus + +
Display Port 1.2
nView Display Management +
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