# radeontop > Show utilisation of AMD GPUs. > More information: . - Show the utilisation of the default AMD GPU: `sudo radeontop` - Enable colourised output: `sudo radeontop --colour` - Select a specific GPU (the bus number is the first number in the output of `lspci`): `sudo radeontop --bus {{bus_number}}` - Specify the display refresh rate (higher means more GPU overhead): `sudo radeontop --ticks {{samples_per_second}}`