I would like to know how I can set my raspberry to overclocking mode to be able to play psp games on the retropie for example. I found several tutorials teaching how to change frequency parameters and others by editing the config.txt document in the raspberry boot directory. But as I am running the OS's through berryboot the document config.txt that is in the boot directory is completely different from what I saw in the other tutorials. I will copy below the config.txt that is saved in the sd card. If anyone knows how I can overclock raspberry I appreciate it very much.
# Enable on-board audio
# Berryboot settings, do not change
# Uncomment this line before installation if you want to enable USB boot
# Uncomment this line to prevent continuous SD card polling if using USB/PXE boot