GeForce 920MX vs GeForce GTX 660

In this comparison between GeForce 920MX and GeForce GTX 660 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 920MX will be the best choice, for others GeForce GTX 660 will be their preference. Study the comparison tables below and make your choice.

GeForce 920MX is a Laptop Graphics Card

Note: GeForce 920MX 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 920MX here:

Main Specs

  GeForce 920MX GeForce GTX 660
Power consumption (TDP) 16 Watt 140 Watt
Interface PCIe 3.0 x8 PCIe 3.0 x16
Supplementary power connectors None One 6-pin
Memory type DDR3, GDDR5 GDDR5
Maximum RAM amount 2 GB 2 GB
Display Connectors No outputs 2x DVI, 1x HDMI, 1x DisplayPort
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  • GeForce GTX 660 has 775% more power consumption, than GeForce 920MX.
  • GeForce 920MX is connected by PCIe 3.0 x8, and GeForce GTX 660 uses PCIe 3.0 x16 interface.
  • GeForce 920MX and GeForce GTX 660 have maximum RAM of 2 GB.
  • GeForce 920MX is used in Laptops, and GeForce GTX 660 - in Desktops.
  • GeForce 920MX is build with Maxwell architecture, and GeForce GTX 660 - with Kepler.
  • Core clock speed of GeForce GTX 660 is 15 MHz higher, than GeForce 920MX.
  • GeForce 920MX and GeForce GTX 660 are manufactured by 28 nm process technology.
  • Memory clock speed of GeForce 920MX is 1794 MHz higher, than GeForce GTX 660.

Game benchmarks

high / 1080p 2−3 20−22
ultra / 1080p 0−1 12−14
QHD / 1440p 0−1 6−7
4K / 2160p 5−6
low / 720p 12−14 40−45
medium / 1080p 3−4 24−27
The average gaming FPS of GeForce GTX 660 in Assassin's Creed Odyssey is 383% more, than GeForce 920MX.

Full Specs

  GeForce 920MX GeForce GTX 660
Architecture Maxwell Kepler
Code name N16V-GMR GK106
Type Laptop Desktop
Release date 25 March 2015 6 September 2012
Pipelines 256 960
Core clock speed 965 MHz 980 MHz
Boost Clock 993 MHz 1033 MHz
Transistor count 2,540 million
Manufacturing process technology 28 nm 28 nm
Texture fill rate 23.83 78.4 billion/sec
Floating-point performance 602.1 gflops 1,981 gflops
Length 9.5" (24.1 cm)
Memory bus width 64 Bit 192-bit GDDR5
Memory clock speed 1800 MHz 6.0 GB/s
Memory bandwidth 14.4 GB/s 144.2 GB/s
Shared memory -
DirectX 12 (11_0) 12 (11_0)
Shader Model 5.1 5.1
OpenGL 4.5 4.3
OpenCL 1.2 1.2
Vulkan 1.1.126 1.1.126
CUDA + +
CUDA cores 960
Bus support PCI Express 3.0 PCI Express 3.0
Height 4.376" (11.1 cm)
SLI options +
Multi monitor support 4 displays
HDMI +
HDCP +
Maximum VGA resolution 2048x1536
Audio input for HDMI Internal
3D Blu-Ray +
3D Gaming +
3D Vision +
Bitcoin / BTC (SHA256) 66 Mh/s
Optimus +
GPU Boost 2.0
GameWorks +
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