The author attempted to push the limits of overclocking his Raspberry Pi 5 to 3.3GHz, encountering a 1V limit in the firmware. By creatively working around this limitation, the author managed to temporarily remove the voltage limit, allowing the CPU to run at the desired speed. The process involved intricate steps of modifying system settings and accessing system memory. Despite the effort, the author concluded that the performance increase was not worth the extensive tinkering involved. Additionally, information on the Raspberry Pi boot process, tools for extracting firmware, and the obscure VideoCore instruction set were discussed.
https://jonatron.github.io/randomstuff/pivolt/