When I try to overclock my Raspberry Pi 3B by editing the boot/config.txt file and restart, I always end up with a black screen. It will go past the "Welcome to Raspberry Pi Desktop" screen but after that it displays this black screen. I am using the Raspberry Pi with Adafruit PowerBoost 1000C and with the Official Raspberry Pi Touchscreen.
What is going on? Are certain RPi3B's not overclockable?
My (failed) boot/config.txt parameters:
arm_freq=1350 core_freq=500 sdram_freq=500 over_voltage=6