GeForce GTX 660 Ti vs GeForce GTX 860M SLI

When choosing between GeForce GTX 660 Ti and GeForce GTX 860M SLI, it is worth examining the specifications of the models in detail. Do they meet the recommended requirements of modern games and software? Storage capacity, form factor, TDP, available ports, warranty and manufacturer support are all important. For example, the size of a PC case can limit the maximum thickness and length of the card. Often, instead of the factory overclocked card and RGB backlight, it is better to choose a reference model with a more efficient GPU. And make sure that your current power supply unit has the correct connection pins (using adapters is not recommended). This GPUs compare tool is meant to help you to choose the best graphics card for your build. Let's find out the difference between GeForce GTX 660 Ti and GeForce GTX 860M SLI.

GeForce GTX 860M SLI is a Laptop Graphics Card

Note: GeForce GTX 860M SLI 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 860M SLI here:

Main Specs

  GeForce GTX 660 Ti GeForce GTX 860M SLI
Power consumption (TDP) 150 Watt 120 Watt
Interface PCIe 3.0 x16
Supplementary power connectors Two 6-pin
Memory type GDDR5 GDDR5
Maximum RAM amount 2 GB 2x 4 GB
Display Connectors 2x DVI, 1x HDMI, 1x DisplayPort
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  • GeForce GTX 660 Ti has 25% more power consumption, than GeForce GTX 860M SLI.
  • GeForce GTX 660 Ti and GeForce GTX 860M SLI have maximum RAM of 2 GB.
  • GeForce GTX 660 Ti is used in Desktops, and GeForce GTX 860M SLI - in Laptops.
  • GeForce GTX 660 Ti is build with Kepler architecture, and GeForce GTX 860M SLI - with Maxwell.
  • Core clock speed of GeForce GTX 860M SLI is 114 MHz higher, than GeForce GTX 660 Ti.
  • GeForce GTX 660 Ti and GeForce GTX 860M SLI are manufactured by 28 nm process technology.
  • Memory clock speed of GeForce GTX 860M SLI is 4994 MHz higher, than GeForce GTX 660 Ti.

Game benchmarks

high / 1080p 21−24 21−24
ultra / 1080p 12−14 14−16
QHD / 1440p 8−9 8−9
4K / 2160p 5−6 5−6
low / 720p 40−45 40−45
medium / 1080p 27−30 27−30
GeForce GTX 660 Ti and GeForce GTX 860M SLI have the same average FPS in Assassin's Creed Odyssey.

Full Specs

  GeForce GTX 660 Ti GeForce GTX 860M SLI
Architecture Kepler Maxwell
Code name GK104
Type Desktop Laptop
Release date 16 August 2012 12 March 2014
Pipelines 1344 1280
Core clock speed 915 MHz 1029 MHz
Boost Clock 980 MHz
Transistor count 3,540 million 2x 1870 Million
Manufacturing process technology 28 nm 28 nm
Texture fill rate 102.5 billion/sec
Floating-point performance 2,459.5 gflops
Length 9.5" (24.1 cm)
Memory bus width 192-bit GDDR5 2x 128 Bit
Memory clock speed 6.0 GB/s 5000 MHz
Memory bandwidth 144.2 GB/s
Shared memory - -
DirectX 12 (11_0) DirectX 12 (FL 11_0), Shader 5.0
Shader Model 5.1
OpenGL 4.3
OpenCL 1.2
Vulkan 1.1.126
CUDA + +
CUDA cores 1344
Bus support 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
Laptop size large
Optimus +
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