GeForce GTX 660 vs GRID K520

When choosing between GeForce GTX 660 and GRID K520, 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 and GRID K520.

Main Specs

  GeForce GTX 660 GRID K520
Power consumption (TDP) 140 Watt 225 Watt
Interface PCIe 3.0 x16 PCIe 3.0 x16
Supplementary power connectors One 6-pin 1x 8-pin
Memory type GDDR5 GDDR5
Maximum RAM amount 2 GB 4 GB
Display Connectors 2x DVI, 1x HDMI, 1x DisplayPort No outputs
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  • GRID K520 has 60% more power consumption, than GeForce GTX 660.
  • Both video cards are using PCIe 3.0 x16 interface connection to a motherboard.
  • GRID K520 has 2 GB more memory, than GeForce GTX 660.
  • Both cards are used in Desktops.
  • GeForce GTX 660 and GRID K520 are build with Kepler architecture.
  • Core clock speed of GeForce GTX 660 is 235 MHz higher, than GRID K520.
  • GeForce GTX 660 and GRID K520 are manufactured by 28 nm process technology.
  • GRID K520 is 258 mm longer, than GeForce GTX 660.
  • Memory clock speed of GRID K520 is 4994 MHz higher, than GeForce GTX 660.

Game benchmarks

high / 1080p 20−22 16−18
ultra / 1080p 12−14 9−10
QHD / 1440p 6−7 4−5
4K / 2160p 5−6 4−5
low / 720p 40−45 30−35
medium / 1080p 24−27 20−22
The average gaming FPS of GeForce GTX 660 in Assassin's Creed Odyssey is 35% more, than GRID K520.

Full Specs

  GeForce GTX 660 GRID K520
Architecture Kepler Kepler
Code name GK106 GK104
Type Desktop Workstation
Release date 6 September 2012 23 July 2013
Pipelines 960 1536
Core clock speed 980 MHz 745 MHz
Boost Clock 1033 MHz
Transistor count 2,540 million 3,540 million
Manufacturing process technology 28 nm 28 nm
Texture fill rate 78.4 billion/sec 95.36
Floating-point performance 1,981 gflops 2x 2,448 gflops
Length 9.5" (24.1 cm) 267 mm
Memory bus width 192-bit GDDR5 256 Bit
Memory clock speed 6.0 GB/s 5000 MHz
Memory bandwidth 144.2 GB/s 160.0 GB/s
DirectX 12 (11_0) 12 (11_0)
Shader Model 5.1 5.1
OpenGL 4.3 4.6
OpenCL 1.2 1.2
Vulkan 1.1.126 1.1.126
CUDA + 3.0
CUDA cores 960
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) 66 Mh/s 76 Mh/s
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