Quadro K620M vs Radeon RX 550X mobile

If you are going to buy a new graphics card and are choosing between Quadro K620M and Radeon RX 550X mobile, 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 K620M stacks up against Radeon RX 550X mobile, check out specs charts below.

Quadro K620M and Radeon RX 550X mobile are Laptop Graphics Cards

Note: Quadro K620M and Radeon RX 550X mobile 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 RX 550X mobile here:

Main Specs

  Quadro K620M Radeon RX 550X mobile
Power consumption (TDP) 30 Watt 50 Watt
Interface MXM-A (3.0) PCIe 3.0 x8
Supplementary power connectors None
Memory type DDR3 GDDR5
Maximum RAM amount 2 GB 4 GB
Display Connectors No outputs No outputs
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  • Radeon RX 550X mobile has 66% more power consumption, than Quadro K620M.
  • Quadro K620M is connected by MXM-A (3.0), and Radeon RX 550X mobile uses PCIe 3.0 x8 interface.
  • Radeon RX 550X mobile has 2 GB more memory, than Quadro K620M.
  • Quadro K620M is used in Mobile workstations, and Radeon RX 550X mobile - in Laptops.
  • Quadro K620M is build with Maxwell architecture, and Radeon RX 550X mobile - with Polaris.
  • Core clock speed of Radeon RX 550X mobile is 147 MHz higher, than Quadro K620M.
  • Quadro K620M is manufactured by 28 nm process technology, and Radeon RX 550X mobile - by 14 nm process technology.
  • Memory clock speed of Radeon RX 550X mobile is 5000 MHz higher, than Quadro K620M.

Game benchmarks

high / 1080p 3−4 14−16
ultra / 1080p 1−2 9−10
QHD / 1440p 0−1 3−4
low / 720p 14−16 30−35
medium / 1080p 5−6 20−22
The average gaming FPS of Radeon RX 550X mobile in Assassin's Creed Odyssey is 216% more, than Quadro K620M.

Full Specs

  Quadro K620M Radeon RX 550X mobile
Architecture Maxwell Polaris
Code name GM108 Polaris 12
Type Mobile workstation Laptop
Release date 1 March 2015 10 January 2019
Pipelines 384 640
Core clock speed 1029 MHz 1176 MHz
Boost Clock 1124 MHz 1287 MHz
Transistor count 2,200 million
Manufacturing process technology 28 nm 14 nm
Texture fill rate 17.98 51.48
Floating-point performance 863.2 gflops
Memory bus width 64 Bit 128 Bit
Memory clock speed 2000 MHz 7000 MHz
Memory bandwidth 14.4 GB/s 96 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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