Do I need an eGPU or a docking station?

[Mity]

Do docking stations like the ones below have built-in video cards? Or are the docking stations just a way to consolidate I/O into one area but the dGPU or iGPU of the laptop is used?

I'm looking for a way to connect multiple 4K displays to a Macbook Pro 16" and I'm not sure if I need a docking station or an eGPU. My goal is to not use the dGPU inside of the Macbook pro 16".

https://www.amazon.com/Plugable-Charging-Specific-Thunderbolt-DisplayPort/dp/B0779K9DG2

https://www.amazon.com/Monitor-Docking-Supports-Compatible-Specific/dp/B083RR7FCV

 

[profcutter]

If you want to bypass the dGPU, you've got no choice but an eGPU to run external monitors. Most MacBook pros with 2 GPUs have the external outputs hardwired to the dGPU.