Raspberry PI overclocking parameters in CONFIG.TXT
NOTE: Setting any overclocking parameters to values other than those used by raspi-config may set a permanent bit within the SoC, making it possible to detect that your Pi has been overclocked. The specific circumstances where the overclock bit is set are if force_turbo is set to 1 and any of the over_voltage_* options are set to a value > 0. See the blog post on Turbo Mode for more information.
The latest kernel has a cpufreq kernel driver with the "ondemand" governor enabled by default. It has no effect if you have no overclock settings, but if you overclock, the CPU frequency will vary with processor load. Non-default values are only used when required, according to the governor. You can adjust the minimum values with the *_min config options, or disable dynamic clocking (and force overclocking) with force_turbo=1. For more information see here.
https://www.raspberrypi.org/documentation/configuration/config-txt/overclocking.md
Overclocking problems
Most overclocking issues show up immediately with a failure to boot. If this occurs, hold down the shift key during the next boot. This will temporarily disable all overclocking, allowing you to boot successfully and then edit your settings.
Raspberry Pi 3 Overclock
https://haydenjames.io/raspberry-pi-3-overclock/
The default idle config for the Raspberry Pi 3 board is arm_freq=600 and core_freq=250. The arm_freq setting still adds heat to the board when pushed beyond the default max of 1.2Ghz, so we are not touching that. This simply keeps the Raspberry Pi 3 board running at max defaults which are arm_freq=1200 and core_freq=400. To do this simply set these line in your config.txt:
NOTE: Setting any overclocking parameters to values other than those used by raspi-config may set a permanent bit within the SoC, making it possible to detect that your Pi has been overclocked. The specific circumstances where the overclock bit is set are if force_turbo is set to 1 and any of the over_voltage_* options are set to a value > 0. See the blog post on Turbo Mode for more information.
The latest kernel has a cpufreq kernel driver with the "ondemand" governor enabled by default. It has no effect if you have no overclock settings, but if you overclock, the CPU frequency will vary with processor load. Non-default values are only used when required, according to the governor. You can adjust the minimum values with the *_min config options, or disable dynamic clocking (and force overclocking) with force_turbo=1. For more information see here.
https://www.raspberrypi.org/documentation/configuration/config-txt/overclocking.md
Overclocking problems
Most overclocking issues show up immediately with a failure to boot. If this occurs, hold down the shift key during the next boot. This will temporarily disable all overclocking, allowing you to boot successfully and then edit your settings.
Raspberry Pi 3 Overclock
https://haydenjames.io/raspberry-pi-3-overclock/
The default idle config for the Raspberry Pi 3 board is arm_freq=600 and core_freq=250. The arm_freq setting still adds heat to the board when pushed beyond the default max of 1.2Ghz, so we are not touching that. This simply keeps the Raspberry Pi 3 board running at max defaults which are arm_freq=1200 and core_freq=400. To do this simply set these line in your config.txt:
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