Surely it makes little difference on a processor with dynamic clk freq scaling?
Assuming its always clocking at its slowest during idle, which your phone is by default, then reducing the max clock speed during activity just extends the time its chugging away at max speed.
Only way to improve battery life is to reduce the amount of work you ask of your phone, not the speed at which it gets on with it.
For example, if my Desire has to process an image, it can either do that in 1ms at 1GHz, or 2ms at 500MHz, using the same amount of battery, no? At all other times its idling at the same 250MHz.
So the way forward is to reduce tasks, not underclock? And if anything the profile conditions in SetCpu are just one more thread.
Anyone actually noticed better battery performance from SetCpu?
I noticed bader Battery Life! So i dont use it anymore!
I don't think it will give you more battery life to reduce the cpu speed. more important i think is to watch the tasks that run on the background. some apps can drain you battery really fast. i just use advanced task killer and set it to kill apps when i turn my screen off, for me it helps more then lower the cpu speed.
Those apps drain battery by not letting the cpu idle, hence lowering max speed could improve battery life.
Sent from my HTC Magic using XDA App
As the title say, what's the difference between deep idle and cpu idle? Which one of them saves the most battery?
Thanks.
Deep idle. Cpuidle is agreed to be an updated interface for the various idle states, which so far isn't really being used any different.
They do not do the same thing.
My phone runs at 750 mV at 200 Mhz but it can also run 750mV at 368Mhz.
So would it affect my battery to leave the min at 368Mhz? Does the phone still consume the same amount of battery even though the frequency would be higher?
I'd imagine it would draw my current so it'd drain your battery faster.
Yes it will definitely drain your battery faster
Which drain more battery, the undervolt value of -100mV or -140mV?
I flashed Cyanoegnmod 12.1 on to my Nexus 5.
When I check the CPU usage and temperature using Cpu Temp app on google play the temperature is 50-54 degrees Centigrade and CPU usage goes aroud 28-50 percent when charging
I removed the charger and the CPU temperature was 41 degrees centigrade and CPU usage goes from 22-33-44 percent.
I have no background apps running. Is this normal.
What is the normal temperature on your Nexus 5
Mine is 41°c at idle and I think that's overheating (maybe the battery is damaged).
You can use CPU-Z to read temperature.