Quadro K620M vs Radeon 540X

If you are going to buy a new graphics card and are choosing between Quadro K620M and Radeon 540X, 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 540X, check out specs charts below.

Quadro K620M and Radeon 540X are Laptop Graphics Cards

Note: Quadro K620M and Radeon 540X 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 540X here:

Main Specs

  Quadro K620M Radeon 540X
Power consumption (TDP) 30 Watt 50 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 1x DVI, 1x HDMI, 1x DisplayPort
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  • Radeon 540X has 66% more power consumption, than Quadro K620M.
  • Quadro K620M is connected by MXM-A (3.0), and Radeon 540X uses PCIe 3.0 x8 interface.
  • Quadro K620M and Radeon 540X have maximum RAM of 2 GB.
  • Quadro K620M is used in Mobile workstations, and Radeon 540X - in Laptops.
  • Quadro K620M is build with Maxwell architecture, and Radeon 540X - with GCN 4.0.
  • Quadro K620M is manufactured by 28 nm process technology, and Radeon 540X - by 14 nm process technology.
  • Memory clock speed of Radeon 540X is 4000 MHz higher, than Quadro K620M.

Game benchmarks

high / 1080p 3−4 6−7
ultra / 1080p 1−2 3−4
QHD / 1440p 0−1 0−1
low / 720p 14−16 14−16
medium / 1080p 5−6 7−8
The average gaming FPS of Radeon 540X in Assassin's Creed Odyssey is 33% more, than Quadro K620M.

Full Specs

  Quadro K620M Radeon 540X
Architecture Maxwell GCN 4.0
Code name GM108 Lexa
Type Mobile workstation Laptop
Release date 1 March 2015 12 August 2019
Pipelines 384 512
Core clock speed 1029 MHz
Boost Clock 1124 MHz 1219 MHz
Transistor count 2,200 million
Manufacturing process technology 28 nm 14 nm
Texture fill rate 17.98 33.47
Floating-point performance 863.2 gflops
Memory bus width 64 Bit 64 Bit
Memory clock speed 2000 MHz 6000 MHz
Memory bandwidth 14.4 GB/s 112.0 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 +
Bitcoin / BTC (SHA256) 92 Mh/s
Optimus +
Display Port 1.2
nView Display Management +
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