External GPU (eGPU)

External GPUs (eGPUs) are graphics cards that are connected to a computer (usually a laptop) via a docking station or a cable.

Increasing eGPU performance

enable PCI Resizable BAR (output should be BAR=8192M afterwards) $ sudo dmesg | grep BAR=
Disable the eGPU audio device and use the notebook inbuilt speaker to ensure the bandwidth is dedicated for eGPU traffic.
Ensure in the BIOS that the link is running in Gen2 mode (2nd-5th Gen i-core) or Gen3 8Gbps (6th Gen i-core or newer).
To lower input lag, you can disable the render queue of your GPU, and disable page flipping. For AMD GPUs, create the following file: /etc/X11/xorg.conf.d/20-amdgpu.conf with the content:
```
Section "Device"
        Identifier "AMD"
        Driver "amdgpu"
        Option "TearFree" "false"
        Option "EnablePageFlip" "false"
EndSection
```