Quadro M620 vs Radeon Pro 555X

If you are going to buy a new graphics card and are choosing between Quadro M620 and Radeon Pro 555X, 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 Quadro M620 stacks up against Radeon Pro 555X, check out specs charts below.

Quadro M620 and Radeon Pro 555X are Laptop Graphics Cards

Note: Quadro M620 and Radeon Pro 555X 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 Quadro M620 or Radeon Pro 555X here:

Main Specs

  Quadro M620 Radeon Pro 555X
Power consumption (TDP) 30 Watt 75 Watt
Interface PCIe 3.0 x8
Supplementary power connectors None
Memory type GDDR5 GDDR5
Maximum RAM amount 2 GB 2 GB
Display Connectors No outputs
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  • Radeon Pro 555X has 150% more power consumption, than Quadro M620.
  • Quadro M620 and Radeon Pro 555X have maximum RAM of 2 GB.
  • Both cards are used in Laptops.
  • Quadro M620 is build with Maxwell architecture, and Radeon Pro 555X - with Polaris.
  • Core clock speed of Quadro M620 is 163 MHz higher, than Radeon Pro 555X.
  • Quadro M620 is manufactured by 28 nm process technology, and Radeon Pro 555X - by 14 nm process technology.
  • Memory clock speed of Radeon Pro 555X is 68 MHz higher, than Quadro M620.

Game benchmarks

high / 1080p 14−16 16−18
ultra / 1080p 8−9 10−11
QHD / 1440p 3−4 4−5
4K / 2160p 4−5
low / 720p 30−35 30−35
medium / 1080p 18−20 21−24
The average gaming FPS of Radeon Pro 555X in Assassin's Creed Odyssey is 13% more, than Quadro M620.

Full Specs

  Quadro M620 Radeon Pro 555X
Architecture Maxwell Polaris
Code name Polaris 21
Type Mobile workstation Mobile workstation
Release date 13 January 2017 5 June 2017
Pipelines 512 768
Core clock speed 1018 MHz 855 MHz
Transistor count 3,000 million
Manufacturing process technology 28 nm 14 nm
Texture fill rate 43.54
Memory bus width 128 Bit 128 Bit
Memory clock speed 5012 MHz 5080 MHz
Memory bandwidth 80 GB/s 81.6 GB/s
Shared memory - -
DirectX 12 12 (12_0)
Shader Model 5.0 6.4
OpenGL 4.5 4.6
OpenCL 2.0
Vulkan 1.2.131
FreeSync +
Laptop size large large
Optimus +
Display Port 1.2
Mosaic +
nView Display Management +
3D Stereo +
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