Overclocking
Raspberry Pi 400
The Pi 400 already runs at a factory 1.8 GHz, which is significantly faster than the 1.5 GHz of the 4B. We can take it a step further, however, and clock speeds of 2 GHz without any throttling. This is primarily thanks to the Pi 400's massive internal heatsink, which works quite well.
Get started by adding one of these to your /boot/config.txt
file.
Running Ubuntu on your Pi? Check
/system-boot/config.txt
instead.
First Timer: 1.9 GHz
arm_freq=1900over_voltage=4
Recommended: 2.0 GHz
arm_freq=2000over_voltage=5
Performance: 2.1 GHz
arm_freq=2100over_voltage=6
Danger Zone: 2.2 GHz
arm_freq=2200over_voltage=8force_turbo=1
Warning: the
force_turbo
bit will void your warranty!
Raspberry Pi 4B
Since the 4B runs at 1.5 GHz, it's wise to start around 1.8 GHz, instead of 2+ GHz right out the door. Active cooling is a mandatory requirement for overclocking the 4B. You will experience throttling almost immediately without adequate cooling.
arm_freq=1800over_voltage=4