GeForce GTX 660 vs Radeon Pro Vega 20

Find out if it is worth upgrading your current GPU setup by comparing GeForce GTX 660 and Radeon Pro Vega 20. 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 660 and Radeon Pro Vega 20. 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.

Radeon Pro Vega 20 is a Laptop Graphics Card

Note: Radeon Pro Vega 20 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 Radeon Pro Vega 20 here:

Main Specs

  GeForce GTX 660 Radeon Pro Vega 20
Power consumption (TDP) 140 Watt 100 Watt
Interface PCIe 3.0 x16 PCIe 3.0 x16
Supplementary power connectors One 6-pin 1x 6-pin + 1x 8-pin
Memory type GDDR5 HBM2
Maximum RAM amount 2 GB 4 GB
Display Connectors 2x DVI, 1x HDMI, 1x DisplayPort No outputs
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  • GeForce GTX 660 has 40% more power consumption, than Radeon Pro Vega 20.
  • Both video cards are using PCIe 3.0 x16 interface connection to a motherboard.
  • Radeon Pro Vega 20 has 2 GB more memory, than GeForce GTX 660.
  • GeForce GTX 660 is used in Desktops, and Radeon Pro Vega 20 - in Mobile workstations.
  • GeForce GTX 660 is build with Kepler architecture, and Radeon Pro Vega 20 - with Vega.
  • Core clock speed of GeForce GTX 660 is 165 MHz higher, than Radeon Pro Vega 20.
  • GeForce GTX 660 is manufactured by 28 nm process technology, and Radeon Pro Vega 20 - by 14 nm process technology.
  • Memory clock speed of Radeon Pro Vega 20 is 1474 MHz higher, than GeForce GTX 660.

Game benchmarks

high / 1080p 20−22 35−40
ultra / 1080p 12−14 21−24
QHD / 1440p 6−7 16−18
4K / 2160p 5−6 10−11
low / 720p 40−45 60−65
medium / 1080p 24−27 40−45
The average gaming FPS of Radeon Pro Vega 20 in Assassin's Creed Odyssey is 68% more, than GeForce GTX 660.

Full Specs

  GeForce GTX 660 Radeon Pro Vega 20
Architecture Kepler Vega
Code name GK106 Vega Mobile
Type Desktop Mobile workstation
Release date 6 September 2012 15 November 2018
Pipelines 960 1280
Core clock speed 980 MHz 815 MHz
Boost Clock 1033 MHz 1283 MHz
Transistor count 2,540 million
Manufacturing process technology 28 nm 14 nm
Texture fill rate 78.4 billion/sec 102.6
Floating-point performance 1,981 gflops
Length 9.5" (24.1 cm)
Memory bus width 192-bit GDDR5 1024 Bit
Memory clock speed 6.0 GB/s 1480 MHz
Memory bandwidth 144.2 GB/s 189.4 GB/s
Shared memory -
DirectX 12 (11_0) 12 (12_1)
Shader Model 5.1 6.3
OpenGL 4.3 4.6
OpenCL 1.2 2.0
Vulkan 1.1.126 1.2.131
CUDA +
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
Laptop size large
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