Orange Pi Zero changing CPU speed?

[peter12]

Hi friends, I am trying to downclock my OPi Zero and set/disable unused cores 1,2,3,  limit DRAM speed, limit max cpu core frequency, put voltage down. 

Is this possible on Opi Zero? 

 

I tried e.g. 

Quote

echo 0 | sudo tee /sys/devices/system/cpu/cpu3/online > /dev/null

 

but when I cat /sys/devices/system/cpu/cpu3/online is is always 1. Any idea please?
Some advice how  to do all of this is highly appreciated.

 

I am trying to downclock Opi Zero to push produced heat down.

[gnasch]

you might want to try h3consumption utility.

best, gnasch

[peter12]

12 hours ago, gnasch said:

you might want to try h3consumption utility.

best, gnasch

Thanks gnasch! But I read h3consumption works just with H3 boards only and Opi Zero is H2 board. Will it work with OpiZero in this case please?

[Igor]

H3 and H2 are almost the same chips.