GeForce GTX 660 vs GeForce GTX 680M

Find out if it is worth upgrading your current GPU setup by comparing GeForce GTX 660 and GeForce GTX 680M. Here you can take a closer look at graphics cards specs, such as core clock speed, memory type and size, display connectors, etc. The price, overall benchmark and gaming performances are usually defining factors when it comes to choosing between GeForce GTX 660 and GeForce GTX 680M. Make sure that the graphics card has compatible dimensions and will properly fit in your new or current computer case. Also these graphics cards may have different system power recommendations, so take that into consideration and upgrade your PSU if necessary.

GeForce GTX 680M is a Laptop Graphics Card

Note: GeForce GTX 680M 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 680M here:

Main Specs

  GeForce GTX 660 GeForce GTX 680M
Power consumption (TDP) 140 Watt 100 Watt
Interface PCIe 3.0 x16 MXM-B (3.0)
Supplementary power connectors One 6-pin None
Memory type GDDR5 GDDR5
Maximum RAM amount 2 GB 4 GB
Display Connectors 2x DVI, 1x HDMI, 1x DisplayPort No outputs
  Check Price Check Price
  • GeForce GTX 660 has 40% more power consumption, than GeForce GTX 680M.
  • GeForce GTX 660 is connected by PCIe 3.0 x16, and GeForce GTX 680M uses MXM-B (3.0) interface.
  • GeForce GTX 680M has 2 GB more memory, than GeForce GTX 660.
  • GeForce GTX 660 is used in Desktops, and GeForce GTX 680M - in Laptops.
  • GeForce GTX 660 and GeForce GTX 680M are build with Kepler architecture.
  • Core clock speed of GeForce GTX 660 is 260 MHz higher, than GeForce GTX 680M.
  • GeForce GTX 660 and GeForce GTX 680M are manufactured by 28 nm process technology.
  • Memory clock speed of GeForce GTX 680M is 1794 MHz higher, than GeForce GTX 660.

Game benchmarks

high / 1080p 20−22 16−18
ultra / 1080p 12−14 9−10
QHD / 1440p 6−7 4−5
4K / 2160p 5−6 4−5
low / 720p 40−45 30−35
medium / 1080p 24−27 20−22
The average gaming FPS of GeForce GTX 660 in Assassin's Creed Odyssey is 35% more, than GeForce GTX 680M.

Full Specs

  GeForce GTX 660 GeForce GTX 680M
Architecture Kepler Kepler
Code name GK106 N13E-GTX
Type Desktop Laptop
Release date 6 September 2012 4 June 2012
Pipelines 960 1344
Core clock speed 980 MHz 720 MHz
Boost Clock 1033 MHz 758 MHz
Transistor count 2,540 million 3,540 million
Manufacturing process technology 28 nm 28 nm
Texture fill rate 78.4 billion/sec 80.6 billion/sec
Floating-point performance 1,981 gflops 2,038 gflops
Length 9.5" (24.1 cm)
Memory bus width 192-bit GDDR5 256 Bit
Memory clock speed 6.0 GB/s 1800 MHz
Memory bandwidth 144.2 GB/s 115.2 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 1344
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 100 Mh/s
Laptop size large
Optimus +
  Check Price Check Price