GeForce GTX 660 Ti vs GeForce GTX 680MX

In this comparison between GeForce GTX 660 Ti and GeForce GTX 680MX 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 Ti will be the best choice, for others GeForce GTX 680MX will be their preference. Study the comparison tables below and make your choice.

GeForce GTX 680MX is a Laptop Graphics Card

Note: GeForce GTX 680MX 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 680MX here:

Main Specs

  GeForce GTX 660 Ti GeForce GTX 680MX
Power consumption (TDP) 150 Watt 122 Watt
Interface PCIe 3.0 x16
Supplementary power connectors Two 6-pin
Memory type GDDR5 GDDR5
Maximum RAM amount 2 GB 2 GB
Display Connectors 2x DVI, 1x HDMI, 1x DisplayPort
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  • GeForce GTX 660 Ti has 22% more power consumption, than GeForce GTX 680MX.
  • GeForce GTX 660 Ti and GeForce GTX 680MX have maximum RAM of 2 GB.
  • GeForce GTX 660 Ti is used in Desktops, and GeForce GTX 680MX - in Laptops.
  • GeForce GTX 660 Ti and GeForce GTX 680MX are build with Kepler architecture.
  • Core clock speed of GeForce GTX 660 Ti is 195 MHz higher, than GeForce GTX 680MX.
  • GeForce GTX 660 Ti and GeForce GTX 680MX are manufactured by 28 nm process technology.
  • Memory clock speed of GeForce GTX 680MX is 2494 MHz higher, than GeForce GTX 660 Ti.

Game benchmarks

high / 1080p 21−24 21−24
ultra / 1080p 12−14 12−14
QHD / 1440p 8−9 7−8
4K / 2160p 5−6 5−6
low / 720p 40−45 40−45
medium / 1080p 27−30 27−30
The average gaming FPS of GeForce GTX 660 Ti in Assassin's Creed Odyssey is 5% more, than GeForce GTX 680MX.

Full Specs

  GeForce GTX 660 Ti GeForce GTX 680MX
Architecture Kepler Kepler
Code name GK104
Type Desktop Laptop
Release date 16 August 2012 23 October 2012
Pipelines 1344 1536
Core clock speed 915 MHz 720 MHz
Boost Clock 980 MHz
Transistor count 3,540 million 3540 Million
Manufacturing process technology 28 nm 28 nm
Texture fill rate 102.5 billion/sec 92.2 billion/sec
Floating-point performance 2,459.5 gflops
Length 9.5" (24.1 cm)
Memory bus width 192-bit GDDR5 256 Bit
Memory clock speed 6.0 GB/s 2500 MHz
Memory bandwidth 144.2 GB/s 160 GB/s
Shared memory - -
DirectX 12 (11_0) 12 API
Shader Model 5.1
OpenGL 4.3 4.5
OpenCL 1.2 1.1
Vulkan 1.1.126
CUDA + +
CUDA cores 1344 1536
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) 99 Mh/s 57 Mh/s
Laptop size large
Optimus +
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