Thread: Saving battery power with underclocking, low voltage etc.
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titan is offline titan
2010-04-17 , 16:57
Posts: 946 | Thanked: 1,650 times | Joined on Oct 2009 @ Germany
#52
Originally Posted by egoshin View Post
Frequency increase is for CPU and another stuff in CPU chip but not motherboard.
I would like to know some basic guidelines in this. Previously I assumed that doubling frequency == doubling CPU energy and doubling CPU voltage == quadruple CPU energy. But now it seems to be wrong.
to monitor the current for different voltages you could
Code:
modprobe bq27x00_battery
then change the voltages and average
Code:
watch -n1 /sys/class/power_supply/bq27200-0/current_now
about some period of time, preferably over ssh with the device idle and the screen locked.
 

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