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# 10% overclock arm_freq=1100 over_voltage=8 sdram_freq=500 sdram_over_voltage=2 force_turbo=1 boot_delay=1
The CPU governor if it knows the CPU is running at 100% WILL up the frequency to the max if the CPU is not over hot. And on the Zero you are unlikely to overheat the CPU.Imperf3kt wrote: ↑Sun Feb 18, 2018 7:51 amNot really.
Lets use imaginary numbers for the purpose of demonstration.
Say the Pi0 can compute 1 thing per second at 1100MHz, but it causes 100% CPU load
Its likely to get hot, thus activating the Pi's thermal throttling which brings it down to around 600MHz, roughly half.
You're still trying to process 1 thing per second, but now you have half the power to do it, hence CPU remains at 100% but takes more than twice as long to do the same task because its running at half the clock speed.
There's nothing 'going on'. There is simply a limit to how fast chips can go, whatever temperature they get to. If it were entirely down to heat, we would all have 100GHz machines running in freezers, but we don't.tastycrust wrote: ↑Sun Feb 18, 2018 6:25 pmI ran the stress package while monitoring both temperatures and actual CPU clock rate, and it stayed at 1100 for a few hours and maxed 52°C, without even so much as a heatsink.
So yeah, there's something going on with this chip that isn't heat-related to cause problems at clock rates over 1100.