GeForce GTX 660 vs GeForce GTX 780M

If you are going to buy a new graphics card and are choosing between GeForce GTX 660 and GeForce GTX 780M, there are a couple of things to consider. Cards with more VRAM in general perform better and allow you to play on higher graphics settings. Size also makes a difference. A model with a large heatsink can occupy up to three expansion slots on a motherboard. Be sure you have enough room in your PC case. When comparing GPUs with different architectures, more processing cores and even higher TFLOPS will not always translate to better performance. To help you decide which GPU you need, we have measured frame rates in a number of popular games. For more on how the GeForce GTX 660 stacks up against GeForce GTX 780M, check out specs charts below.

GeForce GTX 780M is a Laptop Graphics Card

Note: GeForce GTX 780M 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 780M here:

Main Specs

  GeForce GTX 660 GeForce GTX 780M
Power consumption (TDP) 140 Watt 122 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 14% more power consumption, than GeForce GTX 780M.
  • GeForce GTX 660 is connected by PCIe 3.0 x16, and GeForce GTX 780M uses MXM-B (3.0) interface.
  • GeForce GTX 780M has 2 GB more memory, than GeForce GTX 660.
  • GeForce GTX 660 is used in Desktops, and GeForce GTX 780M - in Laptops.
  • GeForce GTX 660 and GeForce GTX 780M are build with Kepler architecture.
  • Core clock speed of GeForce GTX 660 is 157 MHz higher, than GeForce GTX 780M.
  • GeForce GTX 660 and GeForce GTX 780M are manufactured by 28 nm process technology.
  • Memory clock speed of GeForce GTX 780M is 2494 MHz higher, than GeForce GTX 660.

Game benchmarks

high / 1080p 20−22 20−22
ultra / 1080p 12−14 12−14
QHD / 1440p 6−7 6−7
4K / 2160p 5−6 5−6
low / 720p 40−45 40−45
medium / 1080p 24−27 24−27
GeForce GTX 660 and GeForce GTX 780M have the same average FPS in Assassin's Creed Odyssey.

Full Specs

  GeForce GTX 660 GeForce GTX 780M
Architecture Kepler Kepler
Code name GK106 N14E-GTX
Type Desktop Laptop
Release date 6 September 2012 30 May 2013
Pipelines 960 1536
Core clock speed 980 MHz 823 MHz
Boost Clock 1033 MHz 797 MHz
Transistor count 2,540 million 3,540 million
Manufacturing process technology 28 nm 28 nm
Texture fill rate 78.4 billion/sec 102.0
Floating-point performance 1,981 gflops 2,448 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 160.0 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 1536
Bus support PCI Express 3.0 PCI Express 3.0, PCI Express 2.0
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 82 Mh/s
Laptop size large
Standard memory configuration GDDR5
eDP 1.2 signal support Up to 3840x2160
LVDS signal support Up to 1920x1200
DisplayPort Multimode (DP++) support Up to 3840x2160
HDCP content protection +
7.1 channel HD audio on HDMI +
TrueHD and DTS-HD audio bitstreaming +
H.264, VC1, MPEG2 1080p video decoder +
Optimus +
Blu-Ray 3D Support +
3D Vision / 3DTV Play +
  Check Price Check Price