A hands-on guide to overclocking the original Raspberry Pi by editing the /boot/config.txt file. Starting from the stock 700MHz CPU and 400MHz SDRAM, the author incrementally raises the CPU to 800MHz then 900MHz, and SDRAM to 500MHz, achieving roughly a 25% performance improvement on a Pi calculation benchmark. The post also warns that overvolting (as opposed to overclocking) voids the warranty and can cause hardware damage.
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