I am making a small, mobile device with the Raspberry Pi that depends on batteries, so power consumption is an issue. I have scaled the "arm_freq_min" (unsure if clock or instruction cycle frequency) to much lower than the default frequency by about a factor of 10. I have heard that \$\textrm{Power} \propto fV^2 + P_{base}\$, but when does this linearity between power and frequency break down?
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