Select a specific GPU (the bus number is the first number in the output of lspci)

Show utilization of AMD GPUs.
May require root privileges depending on your system.
More information: <https://github.com/clbr/radeontop>.
Trick copyright: tl;dr; <https://github.com/tldr-pages/tldr>

radeontop --bus {{bus_number}}

click the source code to copy install radeontop on any operating system with command-not-found.com