Quadro K620M vs Radeon Pro 555

In this comparison between Quadro K620M and Radeon Pro 555 you will find out which graphics card performs better in today's games. Bear in mind that third-party versions may have more efficient cooling and higher clock speeds. This will increase cards' performance, though not by much. In addition to raw power you should also take into account the dimensions. Thicker models simply will not fit into a small mini-ITX case. The resolution of your monitor also affects the choice, since 4K gameplay requires a more powerful GPU. And don't overspend on the graphics card. Other parts of your build may also need to be upgraded, save some money for the CPU or power supply. For some people Quadro K620M will be the best choice, for others Radeon Pro 555 will be their preference. Study the comparison tables below and make your choice.

Quadro K620M and Radeon Pro 555 are Laptop Graphics Cards

Note: Quadro K620M and Radeon Pro 555 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 K620M or Radeon Pro 555 here:

Main Specs

  Quadro K620M Radeon Pro 555
Power consumption (TDP) 30 Watt 75 Watt
Interface MXM-A (3.0) PCIe 3.0 x8
Supplementary power connectors None None
Memory type DDR3 GDDR5
Maximum RAM amount 2 GB 2 GB
Display Connectors No outputs No outputs
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  • Radeon Pro 555 has 150% more power consumption, than Quadro K620M.
  • Quadro K620M is connected by MXM-A (3.0), and Radeon Pro 555 uses PCIe 3.0 x8 interface.
  • Quadro K620M and Radeon Pro 555 have maximum RAM of 2 GB.
  • Both cards are used in Laptops.
  • Quadro K620M is build with Maxwell architecture, and Radeon Pro 555 - with Polaris.
  • Core clock speed of Quadro K620M is 174 MHz higher, than Radeon Pro 555.
  • Quadro K620M is manufactured by 28 nm process technology, and Radeon Pro 555 - by 14 nm process technology.
  • Memory clock speed of Radeon Pro 555 is 3080 MHz higher, than Quadro K620M.

Game benchmarks

high / 1080p 3−4 16−18
ultra / 1080p 1−2 9−10
QHD / 1440p 0−1 4−5
4K / 2160p 4−5
low / 720p 14−16 30−35
medium / 1080p 5−6 20−22
The average gaming FPS of Radeon Pro 555 in Assassin's Creed Odyssey is 233% more, than Quadro K620M.

Full Specs

  Quadro K620M Radeon Pro 555
Architecture Maxwell Polaris
Code name GM108 Polaris 21
Type Mobile workstation Mobile workstation
Release date 1 March 2015 5 June 2017
Pipelines 384 768
Core clock speed 1029 MHz 855 MHz
Boost Clock 1124 MHz
Transistor count 3,000 million
Manufacturing process technology 28 nm 14 nm
Texture fill rate 17.98 40.80
Floating-point performance 863.2 gflops 1,306 gflops
Memory bus width 64 Bit 128 Bit
Memory clock speed 2000 MHz 5080 MHz
Memory bandwidth 14.4 GB/s 81.6 GB/s
Shared memory - -
DirectX 12 12 (12_0)
Shader Model 5 6.4
OpenGL 4.5 4.6
OpenCL 1.2 2.0
Vulkan 1.1.126 1.2.131
CUDA +
FreeSync +
Bitcoin / BTC (SHA256) 92 Mh/s
Laptop size large
Optimus +
Display Port 1.2
nView Display Management +
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