GeForce GTX 660M vs Radeon Pro Vega 20

When comparing GeForce GTX 660M and Radeon Pro Vega 20, we look primarily at benchmarks and game tests. But it is not only about the numbers. Often you can find third-party models with higher clock speeds, better cooling, or a customizable RGB lighting. Not all of them will have all the features you need. Another thing to consider is the port selection. Most graphics cards have at least one DisplayPort and HDMI interface, but some monitors require DVI. Before you buy, check the TDP of the graphics card - this characteristic will help you estimate the consumption of the graphics card. You may even have to upgrade your PSU to meet its requirements. An important factor when choosing between GeForce GTX 660M and Radeon Pro Vega 20 is the price. Does the additional cost justify the performance hit? Our comparison should help you make the right decision.

GeForce GTX 660M and Radeon Pro Vega 20 are Laptop Graphics Cards

Note: GeForce GTX 660M and Radeon Pro Vega 20 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 660M or Radeon Pro Vega 20 here:

Main Specs

  GeForce GTX 660M Radeon Pro Vega 20
Power consumption (TDP) 50 Watt 100 Watt
Interface MXM-B (3.0) PCIe 3.0 x16
Supplementary power connectors 1x 6-pin + 1x 8-pin
Memory type GDDR5 HBM2
Maximum RAM amount 2 GB 4 GB
Display Connectors No outputs No outputs
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  • Radeon Pro Vega 20 has 100% more power consumption, than GeForce GTX 660M.
  • GeForce GTX 660M is connected by MXM-B (3.0), and Radeon Pro Vega 20 uses PCIe 3.0 x16 interface.
  • Radeon Pro Vega 20 has 2 GB more memory, than GeForce GTX 660M.
  • GeForce GTX 660M is used in Laptops, and Radeon Pro Vega 20 - in Mobile workstations.
  • GeForce GTX 660M is build with Kepler architecture, and Radeon Pro Vega 20 - with Vega.
  • Core clock speed of GeForce GTX 660M is 20 MHz higher, than Radeon Pro Vega 20.
  • GeForce GTX 660M is manufactured by 28 nm process technology, and Radeon Pro Vega 20 - by 14 nm process technology.
  • Memory clock speed of GeForce GTX 660M is 520 MHz higher, than Radeon Pro Vega 20.

Game benchmarks

high / 1080p 6−7 35−40
ultra / 1080p 4−5 21−24
QHD / 1440p 0−1 16−18
4K / 2160p 10−11
low / 720p 16−18 60−65
medium / 1080p 8−9 40−45
The average gaming FPS of Radeon Pro Vega 20 in Assassin's Creed Odyssey is 355% more, than GeForce GTX 660M.

Full Specs

  GeForce GTX 660M Radeon Pro Vega 20
Architecture Kepler Vega
Code name N13E-GE Vega Mobile
Type Laptop Mobile workstation
Release date 22 March 2012 15 November 2018
Pipelines 384 1280
Core clock speed 835 MHz 815 MHz
Boost Clock 950 MHz 1283 MHz
Transistor count 1,270 million
Manufacturing process technology 28 nm 14 nm
Texture fill rate 30.4 billion/sec 102.6
Floating-point performance 729.6 gflops
Memory bus width 128bit 1024 Bit
Memory clock speed 2000 MHz 1480 MHz
Memory bandwidth 64.0 GB/s 189.4 GB/s
Shared memory - -
DirectX 12 API 12 (12_1)
Shader Model 5.1 6.3
OpenGL 4.5 4.6
OpenCL 1.1 2.0
Vulkan 1.1.126 1.2.131
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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