GeForce GTX 580 vs GeForce GTX 660

When choosing between GeForce GTX 580 and GeForce GTX 660, 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 580 and GeForce GTX 660.

Main Specs

  GeForce GTX 580 GeForce GTX 660
Power consumption (TDP) 244 Watt 140 Watt
Interface PCIe 2.0 x16 PCIe 3.0 x16
Supplementary power connectors One 6-pin and One 8-pin One 6-pin
Memory type GDDR5 GDDR5
Maximum RAM amount 1536 MB 2 GB
Display Connectors 2x DVI, 1x mini-HDMI 2x DVI, 1x HDMI, 1x DisplayPort
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  • GeForce GTX 580 has 74% more power consumption, than GeForce GTX 660.
  • GeForce GTX 580 is connected by PCIe 2.0 x16, and GeForce GTX 660 uses PCIe 3.0 x16 interface.
  • GeForce GTX 580 has 1534 GB more memory, than GeForce GTX 660.
  • Both cards are used in Desktops.
  • GeForce GTX 580 is build with Fermi architecture, and GeForce GTX 660 - with Kepler.
  • Core clock speed of GeForce GTX 580 is 564 MHz higher, than GeForce GTX 660.
  • GeForce GTX 580 is manufactured by 40 nm process technology, and GeForce GTX 660 - by 28 nm process technology.
  • GeForce GTX 580 is 1 mm longer, than GeForce GTX 660.
  • Memory clock speed of GeForce GTX 580 is 1998 MHz higher, than GeForce GTX 660.

Game benchmarks

high / 1080p 21−24 20−22
ultra / 1080p 14−16 12−14
QHD / 1440p 8−9 6−7
4K / 2160p 6−7 5−6
low / 720p 40−45 40−45
medium / 1080p 27−30 24−27
The average gaming FPS of GeForce GTX 580 in Assassin's Creed Odyssey is 5% more, than GeForce GTX 660.

Full Specs

  GeForce GTX 580 GeForce GTX 660
Architecture Fermi Kepler
Code name GF110 GK106
Type Desktop Desktop
Release date 9 November 2010 6 September 2012
Pipelines 512 960
Core clock speed 1544 MHz 980 MHz
Boost Clock 1033 MHz
Transistor count 3,000 million 2,540 million
Manufacturing process technology 40 nm 28 nm
Texture fill rate 49.4 billion/sec 78.4 billion/sec
Floating-point performance 1,581.1 gflops 1,981 gflops
Length 10.5" (267 mm) (26.7 cm) 9.5" (24.1 cm)
Memory bus width 384 Bit 192-bit GDDR5
Memory clock speed 2004 MHz (4008 data rate) 6.0 GB/s
Memory bandwidth 192.4 GB/s 144.2 GB/s
DirectX 12 (11_0) 12 (11_0)
Shader Model 5.1 5.1
OpenGL 4.2 4.3
OpenCL 1.1 1.2
Vulkan N/A 1.1.126
CUDA + +
CUDA cores 512 960
Bus support PCI-E 2.0 x 16 PCI Express 3.0
Height 4.376" (111 mm) (11.1 cm) 4.376" (11.1 cm)
SLI options + +
Multi monitor support + 4 displays
HDMI + +
HDCP +
Maximum VGA resolution 2048x1536 2048x1536
Audio input for HDMI Internal Internal
3D Blu-Ray +
3D Gaming +
3D Vision +
Bitcoin / BTC (SHA256) 142 Mh/s 66 Mh/s
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