GeForce GTX 580M SLI vs GeForce GTX 660M

Find out if it is worth upgrading your current GPU setup by comparing GeForce GTX 580M SLI and GeForce GTX 660M. 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 580M SLI and GeForce GTX 660M. 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 580M SLI and GeForce GTX 660M are Laptop Graphics Cards

Note: GeForce GTX 580M SLI and GeForce GTX 660M are only used in laptop graphics. They have 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 580M SLI or GeForce GTX 660M here:

Main Specs

  GeForce GTX 580M SLI GeForce GTX 660M
Power consumption (TDP) 100 Watt 50 Watt
Interface MXM-B (3.0)
Memory type GDDR5 GDDR5
Maximum RAM amount 2 GB
Display Connectors No outputs
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  • GeForce GTX 580M SLI has 100% more power consumption, than GeForce GTX 660M.
  • Both cards are used in Laptops.
  • GeForce GTX 580M SLI is build with Fermi architecture, and GeForce GTX 660M - with Kepler.
  • Core clock speed of GeForce GTX 660M is 215 MHz higher, than GeForce GTX 580M SLI.
  • GeForce GTX 580M SLI is manufactured by 40 nm process technology, and GeForce GTX 660M - by 28 nm process technology.
  • Memory clock speed of GeForce GTX 660M is 500 MHz higher, than GeForce GTX 580M SLI.

Game benchmarks

high / 1080p 24−27 6−7
ultra / 1080p 14−16 4−5
QHD / 1440p 10−11 0−1
4K / 2160p 6−7
low / 720p 45−50 16−18
medium / 1080p 30−35 8−9
The average gaming FPS of GeForce GTX 580M SLI in Assassin's Creed Odyssey is 233% more, than GeForce GTX 660M.

Full Specs

  GeForce GTX 580M SLI GeForce GTX 660M
Architecture Fermi Kepler
Code name N12E-GTX2 N13E-GE
Type Laptop Laptop
Release date 6 January 2011 22 March 2012
Pipelines 768 384
Core clock speed 620 MHz 835 MHz
Boost Clock 950 MHz
Transistor count 1,270 million
Manufacturing process technology 40 nm 28 nm
Texture fill rate 30.4 billion/sec
Floating-point performance 729.6 gflops
Memory bus width 256 Bit 128bit
Memory clock speed 1500 MHz 2000 MHz
Memory bandwidth 64.0 GB/s
Shared memory - -
DirectX DirectX 11, Shader 5.0 12 API
Shader Model 5.1
OpenGL 4.5
OpenCL 1.1
Vulkan 1.1.126
CUDA +
CUDA cores 384
Bus support PCI Express 2.0, PCI Express 3.0
SLI options +
HDMI +
HDCP +
Maximum VGA resolution Up to 2048x1536
Bitcoin / BTC (SHA256) 36 Mh/s
Laptop size large large
Optimus +
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