Hi I've searched in the forum but I can't find any similar with sensation,
my question is does Overclock saves battery? or the Underclock do?
I'm using this rom and kernel at my signature.
sorry noob :/
underclock saves battery, cpu uses less power when running at lower frequencies
walkinhotdog said:
underclock saves battery, cpu uses less power when running at lower frequencies
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Really?.. some says that overclocking will save battery because less work for cpu.
Fata7ity said:
Really?.. some says that overclocking will save battery because less work for cpu.
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Have a look at:
http://en.wikipedia.org/wiki/Underclocking
and
http://en.wikipedia.org/wiki/Overclocking
It pretty much sums up what I believe to be the effect of Underclocking & Overclocking, of course I might just be wrong.
Fata7ity said:
Really?.. some says that overclocking will save battery because less work for cpu.
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Depends entirely on how you use your phone.
Has anyone done real tests? I've always heard that underclocking keeps the phone awake longer for processes, overclocking uses more energy but completes processes quicker and therefore the CPU can sleep faster.
Related
Hi I dont know much about this topic so I have a few questions.
Is overclocking it bad?
Is it possible to have like a switch mode? - Like have a real fast overclocked version and then and real underclocked version to save battery? Would this save battery if you underclocked it?
Thanks for you answers?
overclocking it can cause the device to take damage
overclocking it will eat more batt then a normal speed
otherwise read here
http://forum.xda-developers.com/viewtopic.php?t=10292
Right so my phone can get pretty hot some times and I was just wondering if I undervolt it will it reduce the heat of my phone?
Also how much difference does UV actually show
It can't, because you can undervoltage not much or your phone won't be stable anymore.I think the easier way is to downclock your cpu speed.
likuku said:
It can help in term of technical, but in actually at the rate you can see the different of it.I don't think your phone will still stable or functional.
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That's really hard to understand what you're trying to say...
Sent from my HTC Sensation 4G using XDA App
likuku said:
It can't, because you can undervoltage not much or your phone won't be stable anymore.I think the easier way is to downclock your cpu speed.
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Galaxa12 said:
That's really hard to understand what you're trying to say...
Sent from my HTC Sensation 4G using XDA App
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He means that you can use an app like SetCPU to underclock or lower the clock frequency of your phones CPU, this will leave you a slower but cooler phone.
yes, if you undervolt you reduce cpu "power consuption" as equally as how many volt you decrese.. but.. if you undervolt too much, you lose cpu stability, so, if you undervolt you have to underclock, the same for overclock, if you overclock you may overvolt
it's different for all peoples, some users could have a better cpu (with less impurity), it can be overcloccked better with less overvolt, some can have a bad cpu chip, it means they have to overvolt so much for a little overclock
i have a sensation normally with -75mV undervolt and stock clock, it's stabe, so, am i lucky?
Temperature is a function of voltage + clockspeed. It is recommended you stay at 1.2ghz for good balance b/w performance, temp, and battery consumption.
To easily find your optimal voltage threshold, globally undervolt in stages of 12.5mv until your phone because unstable. Then increase it by 1 stage and that is the optimal voltage your phone should be running at.
Of course you can even go as far as tweak voltages at different clock speeds. Usually there is much more room to UV the lower clocks (192 and 384mhz around 800 or 812.5mv) than the higher clocks.
Hope this helps
iba21 said:
yes, if you undervolt you reduce cpu "power consuption" as equally as how many volt you decrese.. but.. if you undervolt too much, you lose cpu stability, so, if you undervolt you have to underclock, the same for overclock, if you overclock you may overvolt
it's different for all peoples, some users could have a better cpu (with less impurity), it can be overcloccked better with less overvolt, some can have a bad cpu chip, it means they have to overvolt so much for a little overclock
i have a sensation normally with -75mV undervolt and stock clock, it's stabe, so, am i lucky?
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Getting a Poco x3 pro soon and thinking about undervolting could you add me on discord and help me? If so add Gokn#4488
im running aokp build 30 and franco kernel on my galaxy nexus and theyre just slaughtering the battery. it comes with a small battery to start, just 1750mah, but this is worse than when i was on stock rooted ics. i had the cpu governor on interactive but i could watch my battery percentages by the minute so i switched over to conservative and it may have slowed down a little. What's causing this? Franco is touted for its battery life, but ive heard a lot of complaints about the latest builds. aokp build 30 has been around for 2 days so... any ideas? preference on kernels?
do one thing goto cwm
Advanced> wipe Battery status
It's better to use cpu tuner and underclock the device when screen is off...try...
I heard that the battery of nexus is not good.so Samsung now providing a battery of 3000 mA check it..
Xperian8~ click thanks if it helps...
OK I'll do that with cwm. aokp comes with the ability to set CPU. any advice on underclocking because I don't know what to do or what to set it to. I didn't know Samsung was doing a 3000mah deal, thought it was 2100?
yes they are..i read that news on gsmarena.com you can search that...
topic>>
Underclocking is setting the max clock frequency to below than the original frequency
Create a profile and you can trigger your cpu settings in screenoff
Create a new profile and underclock..during testing it cause instability so don't check set on boot option..try
Xperian8~ click thanks if it helps...
the only 3000mah battery deal i could find was on accessorygeeks for $25. is that too good to be true?
seems like too good of a deal to be true though.
i understand what underclocking is, i meant to ask what should i set it to? should i change the voltage as well?
and im having a little trouble with your english, can i only create a profile through the cpu tuner app?
I am sorry for my bad English..
You can underclock it max to 600 and min frequency to 122mhz
Yes try cpu tuner and add profile set CPU setting as above mentioned...k?:beer:
Xperian8~ click thanks if it helps...
hmm ok, will the underclock have much effect on performance?
and whats the difference between setcpu and cpu tuner? (i have the setcpu apk already)
try after change it
shyamjptpm said:
do one thing goto cwm
Advanced> wipe Battery status
It's better to use cpu tuner and underclock the device when screen is off...try...
I heard that the battery of nexus is not good.so Samsung now providing a battery of 3000 mA check it..
[...]
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Click to collapse
http://www.xda-developers.com/andro...-battery-stats-does-not-improve-battery-life/
battery life on my gnexus is fine. (cm9 nightly)
ianonymousguy said:
the only 3000mah battery deal i could find was on accessorygeeks for $25. is that too good to be true?
seems like too good of a deal to be true though.
i understand what underclocking is, i meant to ask what should i set it to? should i change the voltage as well?
and im having a little trouble with your english, can i only create a profile through the cpu tuner app?
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Click to collapse
If it seems to good to be true, it isn't true. Be sceptic of too good battery deals, alot of products are just badly labled and produce alot worse results than what their description states.
You can go as low as your device still works reliably, same goes for the voltage.
I would just search a bit, there are surely others who experimented with clock speed and voltage, i read an article some time ago about battery drain getting actually worse if you clock too low, shame i can't find it atm.
ianonymousguy said:
hmm ok, will the underclock have much effect on performance?
and whats the difference between setcpu and cpu tuner? (i have the setcpu apk already)
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On the basic level over voltage and frequency control? Probably no difference.
If you look at extras, i.e. scale depending on certain events there might be some differences.
The thing about the gnex's battery is that its a measly 1750mah, one of the smallest ive seen in new releases. like the razor maxx has a 3300mah battery...
good thing to keep in mind about that skepticism, but do you think $25 for a 3000mah battery is a fair, not-scam deal? i cant post links yet, but if you get a chance, search accessorygeeks . com for a 3000mah gnex battery and tell me what you think of that deal.
and thanks, ill look into what other people have done for their clocking.
Looks okay, makes the sleak gnexus quite bulky though .
Guys after a month of continue rom changes i realzed my phone has a problem. The problem is the heat my phone burns for every action. Is the hw problem or sfotware? I have hboot 1.27.1100 s-off and viper s. I want try everithing for not send my phone in assistance (in my country htc assistancee is ridiculous).
kekkojoker90 said:
Guys after a month of continue rom changes i realzed my phone has a problem. The problem is the heat my phone burns for every action. Is the hw problem or sfotware? I have hboot 1.27.1100 s-off and viper s. I want try everithing for not send my phone in assistance (in my country htc assistancee is ridiculous).
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Click to collapse
What part is heating up? The battery? The CPU? The front, the back? Top or bottom?
It could be software. It could be hardware. How is your battery life?
Try installing a fresh version of Viper with limited apps and see if that helps. If it does, reinstall your apps gradually in case one is using too much CPU.
If that doesn't work try a different ROM for a week and see if that changes anything.
Skipjacks said:
What part is heating up? The battery? The CPU? The front, the back? Top or bottom?
It could be software. It could be hardware. How is your battery life?
Try installing a fresh version of Viper with limited apps and see if that helps. If it does, reinstall your apps gradually in case one is using too much CPU.
If that doesn't work try a different ROM for a week and see if that changes anything.
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In the bottom (front and back). Already tried many rom but is always the same. With and w/o undervolt, with gpu rendering ticked and unticked etc etc... (ics and jb)
kekkojoker90 said:
In the bottom (front and back). Already tried many rom but is always the same. With and w/o undervolt, with gpu rendering ticked and unticked etc etc... (ics and jb)
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Click to collapse
If memory serves the bottom of the phone is where the CPU is. So you are overpowering the CPU somehow....
Do you have a CPU monitoring app? So you can see what load the CPU is under at all times? I'm betting you'll find that it's pushing to the max allowable clock speed and/or being used at 100% most of the time.
Are you using the Performance governor on your kernel, or something like it? Try putting the kernel at Conservative and setting the max clock speed at like 1188 and see if that helps. If it does then we'll have isolated the problem. If it doesn't....I dunno...
And again, how is your battery life?
Skipjacks said:
If memory serves the bottom of the phone is where the CPU is. So you are overpowering the CPU somehow....
Do you have a CPU monitoring app? So you can see what load the CPU is under at all times? I'm betting you'll find that it's pushing to the max allowable clock speed and/or being used at 100% most of the time.
Are you using the Performance governor on your kernel, or something like it? Try putting the kernel at Conservative and setting the max clock speed at like 1188 and see if that helps. If it does then we'll have isolated the problem. If it doesn't....I dunno...
And again, how is your battery life?
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my battery life i think is normal 2/2.30 hour of screen and 12/15 with intensive usage. Wifi and data always on. My governor is badass without gpu overlock. Tomorrow post screen with battery life.
Today stats is 1h of screen (browsing in 3g) and 21.30 h of standby and 20% of battery remaining.
I dont have a cpu monitoring app you can tell me one?
kekkojoker90 said:
I dont have a cpu monitoring app you can tell me one?
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system tuner, cpu spy, no frills cpu, setcpu.. any of them are good
Enviado desde mi HTC Sensation 4G
serio22 said:
system tuner, cpu spy, no frills cpu, setcpu.. any of them are good
Enviado desde mi HTC Sensation 4G
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installed system tuner and program says my cpu have 40° C
Edit 45° C now
kekkojoker90 said:
installed system tuner and program says my cpu have 40° C
Edit 45° C now
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That's hot, but what kind of load is it using most often?
10%? 100%?
In system tuner look at the TIMES menu. You should see the processor being offline most of the time. If you see it online at a high frequency most of the time then something's wrong.
But you've got to let System Tuner be installed for a while before you have viable results. At least several hours.
Skipjacks said:
That's hot, but what kind of load is it using most often?
10%? 100%?
In system tuner look at the TIMES menu. You should see the processor being offline most of the time. If you see it online at a high frequency most of the time then something's wrong.
But you've got to let System Tuner be installed for a while before you have viable results. At least several hours.
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Click to collapse
ok tomorrow use my phone normally with system tuner reg active (i post log with temp and freq tomorrow)
Also try a different kernel for a few days.
And use the conservative governor to see if that makes an impact as well. You don't have to stick with that governor forever if it doens't provide enough performance. Just try it and see if it makes a difference.
Skipjacks said:
Also try a different kernel for a few days.
And use the conservative governor to see if that makes an impact as well. You don't have to stick with that governor forever if it doens't provide enough performance. Just try it and see if it makes a difference.
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tomorrow my proof is with vipers and intellidemand to 1.5 ghz.
kekkojoker90 said:
tomorrow my proof is with vipers and intellidemand to 1.5 ghz.
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Click to collapse
You should definitely consider clocking it to a slower speed just for testing. I have had similar issues in the past when it is clocked to that speed.
Little update after 30 min of browsing temp us 56 C
EDIT After this bad result my cpu ruba to 1.18 Noè with 75 undervolt
Hi
When flashing XtreStoLite Aroma Installer I can choose 4 different kernels.
Right now i'm on "stock" XtreStoLite Unikernel, but is it a possibility that the other kernels will increase my battery life?
Which kernel available right now would you guys say is the best when looking from a battery perspective?
Thanks in advance
Faspaiso said:
Hi
When flashing XtreStoLite Aroma Installer I can choose 4 different kernels.
Right now i'm on "stock" XtreStoLite Unikernel, but is it a possibility that the other kernels will increase my battery life?
Which kernel available right now would you guys say is the best when looking from a battery perspective?
Thanks in advance
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Click to collapse
If they can undervolt but your device can get unstable undervolting, mine always have but maybe I have been unlucky with my socs
I am using simpl kernel and have undervolted with additional 12.5 mV (to the default -12.5 mV) combining to total -25 mV for all frequenceies. Haven't experienced any issues so far, but don't want to experiment and push it too far.
godutch said:
If they can undervolt but your device can get unstable undervolting, mine always have but maybe I have been unlucky with my socs
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vordhosbnbg said:
I am using simpl kernel and have undervolted with additional 12.5 mV (to the default -12.5 mV) combining to total -25 mV for all frequenceies. Haven't experienced any issues so far, but don't want to experiment and push it too far.
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What can "happen" if you undervolt too far? What do you define my unstable? Will it restart, freezing or what? If that happens, can't I just remove the undervolt?
Thanks in advance
Faspaiso said:
What can "happen" if you undervolt too far? What do you define my unstable? Will it restart, freezing or what? If that happens, can't I just remove the undervolt?
Thanks in advance
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Click to collapse
usually reboots or failure to boot, easy to fix by flashing another kernel or resetting to default values though but if you rely on your phone for important things then you could miss those....
Faspaiso said:
What can "happen" if you undervolt too far? What do you define my unstable? Will it restart, freezing or what? If that happens, can't I just remove the undervolt?
Thanks in advance
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godutch said:
usually reboots or failure to boot, easy to fix by flashing another kernel or resetting to default values though but if you rely on your phone for important things then you could miss those....
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Click to collapse
In the specific case Simpl kernel is bundled with the Synapse kernel tuner app, which has a failsafe mechanism related to undervolting. After every restart the voltage settings are applied and after X minutes, if there is no reboot, they are marked "safe". If you get too low and have problems before you reach those X minutes, Synapse will not apply the voltage settings, allowing you to make the needed changes.
vordhosbnbg said:
I am using simpl kernel and have undervolted with additional 12.5 mV (to the default -12.5 mV) combining to total -25 mV for all frequenceies. Haven't experienced any issues so far, but don't want to experiment and push it too far.
Click to expand...
Click to collapse
godutch said:
usually reboots or failure to boot, easy to fix by flashing another kernel or resetting to default values though but if you rely on your phone for important things then you could miss those....
Click to expand...
Click to collapse
Can you define when the unstable thing occurs? Just for testing I have undervolted all simpelkernel is capable of and still going as smooth as always.
Faspaiso said:
Can you define when the unstable thing occurs? Just for testing I have undervolted all simpelkernel is capable of and still going as smooth as always.
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Click to collapse
If you see frequent reboots you know you have undervolted too much
Faspaiso said:
Can you define when the unstable thing occurs? Just for testing I have undervolted all simpelkernel is capable of and still going as smooth as always.
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Click to collapse
When unstable also can cause your phone to freeze and lock up. You could run stress tests for each frequency if you really wanted to go the extra mile. Usually I lower by 5mv for all steps and then when i start noticing weird behaviors I increase by 5mv and call it a day.
Lower frequencies can only go so low, so eventually you'll just be decreasing the high freq steps. Just like a computer, youll need a high enough voltage to keep the phone stable.
godutch said:
If you see frequent reboots you know you have undervolted too much
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tlxxxsracer said:
When unstable also can cause your phone to freeze and lock up. You could run stress tests for each frequency if you really wanted to go the extra mile. Usually I lower by 5mv for all steps and then when i start noticing weird behaviors I increase by 5mv and call it a day.
Lower frequencies can only go so low, so eventually you'll just be decreasing the high freq steps. Just like a computer, youll need a high enough voltage to keep the phone stable.
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Click to collapse
Well it might not work for me then. I undervolted all that Simpelkernel is capable off and have just ran a two hour stress test. Nothing. Phone works like charm.
Faspaiso said:
Well it might not work for me then. I undervolted all that Simpelkernel is capable off and have just ran a two hour stress test. Nothing. Phone works like charm.
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Click to collapse
I believe some kernels allow for lower undervolting.. Im still on 5.0.2
vordhosbnbg said:
I am using simpl kernel and have undervolted with additional 12.5 mV (to the default -12.5 mV) combining to total -25 mV for all frequenceies. Haven't experienced any issues so far, but don't want to experiment and push it too far.
Click to expand...
Click to collapse
Oh, I undervolted busses. Can you explain me which I should undervolt and what is the difference between busses, A57 Cluster, GPU, A53 Cluster and so on and which is the right to undervolt?
Thanks in advance
Faspaiso said:
Oh, I undervolted busses. Can you explain me which I should undervolt and what is the difference between busses, A57 Cluster, GPU, A53 Cluster and so on and which is the right to undervolt?
Thanks in advance
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Click to collapse
Well I am not an expert in these matters, but from what I have read, roughly Power = Voltage^2 * Frequency. This exponential relation between voltage and power consumption is the reason undervolting is so effective in incresing battery life. As @tlxxxsracer said, lower frequencies already use lower voltages and pushing those too low will cause problems, but you can experiment boldly on higher ones.
Regarding your question about different voltage groups:
Our ARM CPU is following the big.LITTLE architecture. This means it has 2 groups of 4 cores - one is the "big" one (A57 Cluster) which is very powerfull, but also not very efficient and is put online when a heavier task load is put on the system. The other is the "LITTLE" group (A53 Cluster) which is what you usually use outside of gaming and short CPU usage spikes. The GPU is the graphics chip and the bus is the memory bus controller, which is basically what connects the RAM, the CPU and the GPU and handles data transfer between them.
What should you undervolt? I would say - whatever you can [get away with]. Push voltages as far as you can without compromsing stability. Lowering the voltage on the A53 and the GPU should be most beneficial. I am perfectly fine with my battery life and did not want to concern myself over stability, so I just undervolted with 25 mV. You however can be the brave man who spent a week in undervoltage experiments and share your results with us.
Now another thing to consider is what quality is your Exynos chip. If you are not familiar with the semiconductor production process, you can read on it over wikipedia, but in short - there are many processors produced on one "waffle" and about half of them are completely unusable. The other half are of varying quality (almost none of them perfect) and based on that imperfections they are sorted in different "bins" (this is known as CPU binning). This means that an almost perfect chip, from a higher bin can sustain much lower voltages, without issues, in comparison with a lower grade chip.
You can take a look in this thread to see what avs group (bin) people have and also how to see yours. I was not able to look it trough the method described in the OP, though, but you can see it in the kernel dmesg.
vordhosbnbg said:
Well I am not an expert in these matters, but from what I have read, roughly Power = Voltage^2 * Frequency. This exponential relation between voltage and power consumption is the reason undervolting is so effective in incresing battery life. As @tlxxxsracer said, lower frequencies already use lower voltages and pushing those too low will cause problems, but you can experiment boldly on higher ones.
Regarding your question about different voltage groups:
Our ARM CPU is following the big.LITTLE architecture. This means it has 2 groups of 4 cores - one is the "big" one (A57 Cluster) which is very powerfull, but also not very efficient and is put online when a heavier task load is put on the system. The other is the "LITTLE" group (A53 Cluster) which is what you usually use outside of gaming and short CPU usage spikes. The GPU is the graphics chip and the bus is the memory bus controller, which is basically what connects the RAM, the CPU and the GPU and handles data transfer between them.
What should you undervolt? I would say - whatever you can [get away with]. Push voltages as far as you can without compromsing stability. Lowering the voltage on the A53 and the GPU should be most beneficial. I am perfectly fine with my battery life and did not want to concern myself over stability, so I just undervolted with 25 mV. You however can be the brave man who spent a week in undervoltage experiments and share your results with us.
Now another thing to consider is what quality is your Exynos chip. If you are not familiar with the semiconductor production process, you can read on it over wikipedia, but in short - there are many processors produced on one "waffle" and about half of them are completely unusable. The other half are of varying quality (almost none of them perfect) and based on that imperfections they are sorted in different "bins" (this is known as CPU binning). This means that an almost perfect chip, from a higher bin can sustain much lower voltages, without issues, in comparison with a lower grade chip.
You can take a look in this thread to see what avs group (bin) people have and also how to see yours. I was not able to look it trough the method described in the OP, though, but you can see it in the kernel dmesg.
Click to expand...
Click to collapse
This is the most in depth answer I have ever gotten. Thanks for that!
Mind if I ask one more question? What is HPM voltage control and when undervolting is that the thing I should undervolt (it's in all of the 4 sections you explained)? Or should I undervolt each core individually?
Thanks in advance!
If I would have to guess, I would say, based on the description that increasing this increases the range, which you can change the volatage on each individual frequency, but I may be wrong, you should ask in the simpl kernel thread.