GeForce GTX 660 vs Radeon RX Vega M GL 870

If you are going to buy a new graphics card and are choosing between GeForce GTX 660 and Radeon RX Vega M GL 870, there are a couple of things to consider. Cards with more VRAM in general perform better and allow you to play on higher graphics settings. Size also makes a difference. A model with a large heatsink can occupy up to three expansion slots on a motherboard. Be sure you have enough room in your PC case. When comparing GPUs with different architectures, more processing cores and even higher TFLOPS will not always translate to better performance. To help you decide which GPU you need, we have measured frame rates in a number of popular games. For more on how the GeForce GTX 660 stacks up against Radeon RX Vega M GL 870, check out specs charts below.

Radeon RX Vega M GL 870 is a Laptop Graphics Card

Note: Radeon RX Vega M GL 870 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 RX Vega M GL 870 here:

Main Specs

  GeForce GTX 660 Radeon RX Vega M GL 870
Power consumption (TDP) 140 Watt
Interface PCIe 3.0 x16
Supplementary power connectors One 6-pin
Memory type GDDR5 HBM2
Maximum RAM amount 2 GB 4 GB
Display Connectors 2x DVI, 1x HDMI, 1x DisplayPort
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  • Radeon RX Vega M GL 870 has 2 GB more memory, than GeForce GTX 660.
  • GeForce GTX 660 is used in Desktops, and Radeon RX Vega M GL 870 - in Laptops.
  • GeForce GTX 660 is build with Kepler architecture, and Radeon RX Vega M GL 870 - with Vega.
  • Core clock speed of GeForce GTX 660 is 49 MHz higher, than Radeon RX Vega M GL 870.
  • GeForce GTX 660 is manufactured by 28 nm process technology, and Radeon RX Vega M GL 870 - by 14 nm process technology.

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 RX Vega M GL 870 in Assassin's Creed Odyssey is 68% more, than GeForce GTX 660.

Full Specs

  GeForce GTX 660 Radeon RX Vega M GL 870
Architecture Kepler Vega
Code name GK106 Vega Kaby Lake-G
Type Desktop Laptop
Release date 6 September 2012 7 January 2018
Pipelines 960 1280
Core clock speed 980 MHz 931 MHz
Boost Clock 1033 MHz 1011 MHz
Transistor count 2,540 million
Manufacturing process technology 28 nm 14 nm
Texture fill rate 78.4 billion/sec
Floating-point performance 1,981 gflops
Length 9.5" (24.1 cm)
Memory bus width 192-bit GDDR5
Memory clock speed 6.0 GB/s
Memory bandwidth 144.2 GB/s
Shared memory -
DirectX 12 (11_0) DirectX 12_1
Shader Model 5.1
OpenGL 4.3
OpenCL 1.2
Vulkan 1.1.126
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 medium sized
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