Develop Bugs

Milestone on Defy

I have Milestone cpu program and I wonder in what speed is safe to put the cpu run.I have it on 1000 but I dont know if it is safe.I would like to inform me the safest speed to put it.
Thanks
Sent from my MB525 using XDA App

1000 is absolutely safe...quite a few people even run it on 1200mhz, and that is also considered safe (i personally dont see any reason why anybody needs more than 1000mhz)..

ntisco said:
I have Milestone cpu program and I wonder in what speed is safe to put the cpu run.I have it on 1000 but I dont know if it is safe.I would like to inform me the safest speed to put it.
Thanks
Sent from my MB525 using XDA App
Click to expand...
Click to collapse
you mean milestone overclock? use setvsel instead, thats specially for the defy, and has more options than milestone overclock. and yeah, 1ghz is perfectly safe, our TI 3630s default clock is 1ghz, so 800mhz is an underclock. also try undervolting, the voltages are waay too high by default!

i used Milestone Overclock and now i feel like my defy is running smoother, and more reactive @1300 but i dont know if thats just my defy
*and dont try overclockin to 1400 because the system goes through a melt down and becomes heavy so keep to 1300 at max*
sent from Motorola Defy @1.3gz running 2.3.7!

zakoo2 said:
you mean milestone overclock? use setvsel instead, thats specially for the defy, and has more options than milestone overclock. and yeah, 1ghz is perfectly safe, our TI 3630s default clock is 1ghz, so 800mhz is an underclock. also try undervolting, the voltages are waay too high by default!
Click to expand...
Click to collapse
You mean this for voltage??
https://market.android.com/details?...SwxLDEsImNvbS5teXJ0Lm15cnR1bmRlcnZvbHRndWkiXQ..
But the options that it has is lot...which is the most right for each gig to the prosesor???
Thanks all for your unsers..So i run it at 1000 and if i want something more i take up to 1.300 max....

ntisco said:
You mean this for voltage??
https://market.android.com/details?...SwxLDEsImNvbS5teXJ0Lm15cnR1bmRlcnZvbHRndWkiXQ..
But the options that it has is lot...which is the most right for each gig to the prosesor???
Thanks all for your unsers..So i run it at 1000 and if i want something more i take up to 1.300 max....
Click to expand...
Click to collapse
nope, thats not what i mean, use setvsel for voltage settings. read this article. i dont see the point in overclocking the phone more than to 1ghz, it drains much faster and get really hot, but you wont really see the performance difference.
btw, my settings are:
[email protected]
[email protected]
[email protected]
I could run on lower vsels, but i wanted a perfectly stable phone, so i raised every vsel by 2.

zakoo2 said:
nope, thats not what i mean, use setvsel for voltage settings. read this article. i dont see the point in overclocking the phone more than to 1ghz, it drains much faster and get really hot, but you wont really see the performance difference.
btw, my settings are:
[email protected]
[email protected]
[email protected]
I could run on lower vsels, but i wanted a perfectly stable phone, so i raised every vsel by 2.
Click to expand...
Click to collapse
Well i download the program and set your setings (numbers)..And the hz in 1000 to Milestone..BUT when i go and open the milestone program i see that the price (1000) has returned to auto ...
I have task killer but i have uncheck Milestone and the VSEL program in order to work..In the milestone program i press the button above the bar that i scroll to 1000hz..and then aply...Then back to go out of the ptogram...Now if i open it again i see se scroll bar at the back an i must do the same again...What i do wrong????

ntisco said:
Well i download the program and set your setings (numbers)..And the hz in 1000 to Milestone..BUT when i go and open the milestone program i see that the price (1000) has returned to auto ...
I have task killer but i have uncheck Milestone and the VSEL program in order to work..In the milestone program i press the button above the bar that i scroll to 1000hz..and then aply...Then back to go out of the ptogram...Now if i open it again i see se scroll bar at the back an i must do the same again...What i do wrong????
Click to expand...
Click to collapse
simply uninstall milestone overclock, and only use setvsel. setvsel is a full featured overclock utility specially for the defy, you dont need anything else. just set the frequencies and the vsels in setvsel, and apply!

zakoo2 said:
simply uninstall milestone overclock, and only use setvsel. setvsel is a full featured overclock utility specially for the defy, you dont need anything else. just set the frequencies and the vsels in setvsel, and apply!
Click to expand...
Click to collapse
If i unistall the milestone program and let the SetVsel....in the Vsel up it has the 3 values 300 - 600 - 1000 and the vsets...it also has a scroll bar that in me is at 86%..this is ok or i must change it?
Litle down from this bar has some other values and a test...how does all that values work??
And if i need to put it to 1.300 hz i just change the 1000 to 1.300???

ntisco said:
If i unistall the milestone program and let the SetVsel....in the Vsel up it has the 3 values 300 - 600 - 1000 and the vsets...it also has a scroll bar that in me is at 86%..this is ok or i must change it?
Litle down from this bar has some other values and a test...how does all that values work??
And if i need to put it to 1.300 hz i just change the 1000 to 1.300???
Click to expand...
Click to collapse
read the article which i linked in my second post, everything is explained there

I have notice that with the numbers of vset that are above and I have put on my cell the temp is 30 -36 Is that ok
Sent from my MB525 using XDA App

zakoo2 said:
nope, thats not what i mean, use setvsel for voltage settings. read this article. i dont see the point in overclocking the phone more than to 1ghz, it drains much faster and get really hot, but you wont really see the performance difference.
btw, my settings are:
[email protected]
[email protected]
[email protected]
I could run on lower vsels, but i wanted a perfectly stable phone, so i raised every vsel by 2.
Click to expand...
Click to collapse
I see a big difference in performance between 1000 and 1200. :/ also I've only seen a difference of 1 hour battery life between the two speeds, which still means I have 35% left after 1 day use. From 6.50 to 23.30 each day
Sent from my MB525 using xda premium

keewanchoapsss said:
I see a big difference in performance between 1000 and 1200. :/ also I've only seen a difference of 1 hour battery life between the two speeds, which still means I have 35% left after 1 day use. From 6.50 to 23.30 each day
Sent from my MB525 using xda premium
Click to expand...
Click to collapse
And what about the temp.....isnt too hot...how much is it
Sent from my MB525 using XDA App

[Q] Calk's Preset Profiles to save battery question?

Notes about Battery Saver script
Can be used with kernels that have init.d support
It completely eliminates the need for an application to set CPU speeds or profiles
Easily customizable if you use a text editor(scripts located in /system/etc/init.d)
It will set Max CPU speed to 500MHz & Min CPU speed to 200MHz when a sleep
If SetCPU, Overclock Widget, Android Overclock or QuickClock Advanced Overclock are detected, the script is ignored, so it will not affect them
Preset profiles are:
1.2GHz - 100-85%
1.0GHz - 84-36%
800MHz - 35-0%
And just an FYI, even at 800MHz, the phone still operates very well & smooth but the battery saving are the real benefit
Click to expand...
Click to collapse
Does this mean that if I don't use Set CPU or any app that undervolt it, the phone will AUTOMATICALLY drop the CPU speed according to my battery level:
1.2GHz - 100-85%
1.0GHz - 84-36%
800MHz - 35-0%
Another word, it will automatically drop CPU speed to 800 MHZ when my battery level is 35-0% in order to save battery?

It won't "Drop" the CPU speed, it will lower the Maximum speed the CPU is allowed to ramp up to.

Drumrocker said:
It won't "Drop" the CPU speed, it will lower the Maximum speed the CPU is allowed to ramp up to.
Click to expand...
Click to collapse
So if I am not doing CPU intensive stuff and just play simple games, email, web surfing phone call, then I am not going to see battery improvement since my CPU probably don't ramp past 800MHZ anyway when I am just doing simple stuff.?

Calk's ROM undervolts the CPU at all speeds so that in itself should help a little with battery life. But you are correct, if you are not doing CPU intensive tasks the CPU probably isn't spending much time at the higher speeds.
There is an app called CPUSpy which shows how much time the CPU has spent in each frequency state.

Your phone will ramp up to 1200 mhz more than you think. When it loads a webpage, it will ramp up to 1200, when it's loading your "simple" game, it will max out for a bit, etc.
It might not stay there for very long, but still. The nice thing about Calkuins rom is that even at 800 mhz, the phone is super smooth and lag free. In fact I just turn setcpu down to 800 all the time.

Let me research setcpu and play around with it. Thanks again for the quick answers.

clamknuckle said:
Your phone will ramp up to 1200 mhz more than you think. When it loads a webpage, it will ramp up to 1200, when it's loading your "simple" game, it will max out for a bit, etc.
It might not stay there for very long, but still. The nice thing about Calkuins rom is that even at 800 mhz, the phone is super smooth and lag free. In fact I just turn setcpu down to 800 all the time.
Click to expand...
Click to collapse
The way Calkulin's rom scripts are setup, setcpu gets reset on every reboot, even if you have it set to boot settings. The scripts installed will still take priority and the old rules apply, just to let you know. So you would have to set setcpu every boot for it to work, that or remove the scripts.
Sent from my SPH-D710 using xda premium

Team era... Does the same idea apply to the blazer 2.0 battery saving script? or does tegrak break it?
Sent from my SPH-D710 using xda premium

I havnt opened that rom, but Im gonna say the same applies, I remove those scripts, 2 will affect the cpu state.
edit, let me clarify, the scripts take prority, even if the app makes a script for init.d, the original script will take over on a reboot. So the script breaks tegrak, setcpu, and voltage control unless you set the app on every reboot.

I am running Calks 2 and desperado kernel. I notice when using setcpu, if you have it set on boot, it will override calks script.
His script does work well on saving battery life though. I ran oc'd while at 20% and still had 1700mhz blazing on performance gov.
I'd still use Calks script over setcpu or tegrak only due to the fact im too sporatic with my phone use to create optimal profiles to fit the way and when i need to use the device.

mindgrind said:
I am running Calks 2 and desperado kernel. I notice when using setcpu, if you have it set on boot, it will override calks script.
His script does work well on saving battery life though. I ran oc'd while at 20% and still had 1700mhz blazing on performance gov.
I'd still use Calks script over setcpu or tegrak only due to the fact im too sporatic with my phone use to create optimal profiles to fit the way and when i need to use the device.
Click to expand...
Click to collapse
Actually in my own testing setcpu will not override the scripts, the slider may stay the same, but trust me, it goes back to 800 (or 1200 over 86%batt), Ive tested it several times. If you want proof Ill tell you how to figure it out. I know Im not respected yet, but I am someone that is known under another name that is highly respected, so, take it as you will.
Sent from my SPH-D710 using xda premium

Era, what's your suggestion for keeping the battery saving scripts running and getting a 1500 ish over clock when needed... something that can do both without having to physically change setcpu everytime. I basically want to permanently over clock to 1.5 and still save as much battery as possible when i have the screen off or it is charging. Idk if setcpu profiles work on this phone because i know they did not work correctly on the galaxy s. And one final question... what voltages do u run at what speeds on the "desperado" kernel to undervolt efficiently?
Sent from my SPH-D710 using xda premium

TeamERA said:
Actually in my own testing setcpu will not override the scripts, the slider may stay the same, but trust me, it goes back to 800 (or 1200 over 86%batt), Ive tested it several times. If you want proof Ill tell you how to figure it out. I know Im not respected yet, but I am someone that is known under another name that is highly respected, so, take it as you will.
Sent from my SPH-D710 using xda premium
Click to expand...
Click to collapse
ERA. I wasn't looking to say that you were wrong in any way shape or form. I would be interested to know how you seen this as I am still in the beginning phases of learning the android system. I do plan on writing my own kernal/roms but I was actually sharing what my logical thought process would have been given the apps and system info I had avail.
I have a little ways to go in understanding the structure and FS of droid. Time is everyones enemy. Thanks for the correction again!

I havnt opened that rom, but Im gonna say the same applies, I remove those scripts, 2 will affect the cpu state.
edit, let me clarify, the scripts take prority, even if the app makes a script for init.d, the original script will take over on a reboot. So the script breaks tegrak, setcpu, and voltage control unless you set the app on every reboot.

I'm currently running Calkulin's rom v2.5, and even at 41% battery I notice the cpu still hits 1.2 Ghz. Is his script activated by default or am I overlooking something? I also have nothing like setcpu installed.

[Q] SetCPU Settings/Questions

okay, so when everyone says that 800MHz should be on "-25mV" what the hell does that mean? i want to improve my battery life to the max possible, 1st time undervolting so yeah...
mines is set to 1025mV
I need a profile for voltages for SetCPU only
Running
Calk's Rom 2.8.1 n Gunslinger 1.4.1

kj13569 said:
okay, so when everyone says that 800MHz should be on "-25mV" what the hell does that mean? i want to improve my battery life to the max possible, 1st time undervolting so yeah...
mines is set to 1025mV
I need a profile for voltages for SetCPU only
Running
Calk's Rom 2.8.1 n Gunslinger 1.4.1
Click to expand...
Click to collapse
If you're using SetCPU, you have all the tools you need. I recommend UVing -50mV at each frequency 1200 & lower. Click apply, then use your phone. If it works well enough, don't be afraid to check the "Set on Boot" boxes

nibrwr said:
If you're using SetCPU, you have all the tools you need. I recommend UVing -50mV at each frequency 1200 & lower. Click apply, then use your phone. If it works well enough, don't be afraid to check the "Set on Boot" boxes
Click to expand...
Click to collapse
appreciate your reply, may be a dumb noob statement but...
it will not let me enter "-50mV" or "-" for that matter just "50mV' and isnt 50mV way too low to be stable? i tried just "25mV" and phone froze so.... please help...
Thanks so much.
PS. it will not let me add special characters... just numbers. numbers go all the way down to "0" but not negative numbers....

If you are running calk's 2.8.1, you are already undervolted by 50mV, so no need to mess with set cpu voltages. You can however mess with the underclock settings. I for example run at 800Mhz with the conservative governor and get great battery life. However if you must mess with the undervolting in set cpu, -50Mv means 50Mv less than default. So lets say ur voltage is 1025 at 800Mhz, to undervolt it by -50 you would change it to 975 (1025-50=975). HOWEVER, as I have mentioned already, you are already undervolted -50 by default when on CALKS rom.
EDIT: To prove that you are already undervolted, here are the STOCK voltages,
1704=1500
1600=1450
1504=1400
1400=1350
1200=1275
1000=1175
800=1075
500=975
200=950
Go into setspu and you will notice your values are all 50 less than the ones listed above.

meatwadathf said:
If you are running calk's 2.8.1, you are already undervolted by 50mV, so no need to mess with set cpu voltages. You can however mess with the underclock settings. I for example run at 800Mhz with the conservative governor and get great battery life. However if you must mess with the undervolting in set cpu, -50Mv means 50Mv less than default. So lets say ur voltage is 1025 at 800Mhz, to undervolt it by -50 you would change it to 975 (1025-50=975). HOWEVER, as I have mentioned already, you are already undervolted -50 by default when on CALKS rom.
EDIT: To prove that you are already undervolted, here are the STOCK voltages,
1704=1500
1600=1450
1504=1400
1400=1350
1200=1275
1000=1175
800=1075
500=975
200=950
Go into setspu and you will notice your values are all 50 less than the ones listed above.
Click to expand...
Click to collapse
Thanks for that, I needed to be schooled. So if i'm running at 800mhz all day, why is my battery being depleted so quickly? (I get a good 12hrs per charge)
What's the lowest I can go? (stable)

kj13569 said:
Thanks for that, I needed to be schooled. So if i'm running at 800mhz all day, why is my battery being depleted so quickly? (I get a good 12hrs per charge)
Click to expand...
Click to collapse
The lowest that is recommended (atleast by Calk) is -100 so 100 less for each of all the values I listed above. However, if -100 makes ur phone slow or restart, try -75, etc...
Battery all depends on your usage. There are a few things you can try to improve it even more. First of all, flash rogue's newest kernel found here:
http://forum.xda-developers.com/showthread.php?t=1341564
Second, make sure to calibrate your battery. The easiest way is to download the Battery Calibration app from the market and follow the directions in the app (its fairly simple). Finally, make sure your governor in setcpu is set to conservative.
EDIT: Also, make sure you manage your running applications. I like to use the stock manager widget that comes with the phone. Allows you to close apps you are not currently using. And finally, you can try running the script found here:
http://forum.xda-developers.com/showthread.php?t=991276
It changes the way your phone uses resources to make it more efficient so it MIGHT also help battery life.
EDIT2: FINALLY, I know you said you're running at 800Mhz all day, but make sure you have your max set at 800 and min at 200. (you never mentioned you were underclocked before so just want you to make sure you are).

meatwadathf said:
If you are running calk's 2.8.1, you are already undervolted by 50mV, so no need to mess with set cpu voltages. You can however mess with the underclock settings. I for example run at 800Mhz with the conservative governor and get great battery life. However if you must mess with the undervolting in set cpu, -50Mv means 50Mv less than default. So lets say ur voltage is 1025 at 800Mhz, to undervolt it by -50 you would change it to 975 (1025-50=975). HOWEVER, as I have mentioned already, you are already undervolted -50 by default when on CALKS rom.
EDIT: To prove that you are already undervolted, here are the STOCK voltages,
1704=1500
1600=1450
1504=1400
1400=1350
1200=1275
1000=1175
800=1075
500=975
200=950
Go into setspu and you will notice your values are all 50 less than the ones listed above.
Click to expand...
Click to collapse
Hey meatwadath, I am running calk's 2.8.1 and went to verify, via setcpu, that I was already undervolted by -50. However, my voltages read the same as what you referenced above. Any ideas?

jasone4gt said:
Hey meatwadath, I am running calk's 2.8.1 and went to verify, via setcpu, that I was already undervolted by -50. However, my voltages read the same as what you referenced above. Any ideas?
Click to expand...
Click to collapse
Means that you are running on stock voltages. That's strange as you should be at -50 by default. Either change the values manually in setcpu, or flash the zip located here:
http://forum.xda-developers.com/attachment.php?attachmentid=845028&d=1325871602
It is Calk's -50 undervolt script.

meatwadathf said:
Means that you are running on stock voltages. That's strange as you should be at -50 by default. Either change the values manually in setcpu, or flash the zip located here:
http://forum.xda-developers.com/attachment.php?attachmentid=845028&d=1325871602
It is Calk's -50 undervolt script.
Click to expand...
Click to collapse
Thanks bro, appreciate the help. Gave you a few thanks for it...

No problem. Any time.

Ok, where is the settings to undervolt in setCPU, because I looked everywhere in the program and cannot find it. I'm probably just retarded... I'm on UnNamed, Rogue Stock EL29 kernel.

beezar said:
Ok, where is the settings to undervolt in setCPU, because I looked everywhere in the program and cannot find it. I'm probably just retarded... I'm on UnNamed, Rogue Stock EL29 kernel.
Click to expand...
Click to collapse
Setcpu- Third button from the top says voltage, then click on the different voltages listed below Apply, pull the little bar to the left to undervolt...

jasone4gt said:
Setcpu- Third button from the top says voltage, then click on the different voltages listed below Apply, pull the little bar to the left to undervolt...
Click to expand...
Click to collapse
Ok, I don't have that button, only got "Main, Profiles, Advanced, Info, About"
I think it's because I'm on a stock kernel; looked it up and undervolting on setCPU only runs on certain kernels apparently. Not sure though.

beezar said:
Ok, I don't have that button, only got "Main, Profiles, Advanced, Info, About"
I think it's because I'm on a stock kernel; looked it up and undervolting on setCPU only runs on certain kernels apparently. Not sure though.
Click to expand...
Click to collapse
Thats probably it. WTH are you doin on stock?!? Get on gunslinger right now!

meatwadathf said:
Thats probably it. WTH are you doin on stock?!? Get on gunslinger right now!
Click to expand...
Click to collapse
I concur

Set CPU
For some reason setcpu isn't really helping out my battery life. When I use it I get the same results as if I wasn't using it.

dorejades said:
For some reason setcpu isn't really helping out my battery life. When I use it I get the same results as if I wasn't using it.
Click to expand...
Click to collapse
You're probably expecting too much. Its not gonna make your battery last for 2 days without a charge. It has to help if you are using it correctly.
There is just no way around it. Lower clockspeeds=less battery drain.

meatwadathf said:
The lowest that is recommended (atleast by Calk) is -100 so 100 less for each of all the values I listed above. However, if -100 makes ur phone slow or restart, try -75, etc...
Battery all depends on your usage. There are a few things you can try to improve it even more. First of all, flash rogue's newest kernel found here:
http://forum.xda-developers.com/showthread.php?t=1341564
Second, make sure to calibrate your battery. The easiest way is to download the Battery Calibration app from the market and follow the directions in the app (its fairly simple). Finally, make sure your governor in setcpu is set to conservative.
EDIT: Also, make sure you manage your running applications. I like to use the stock manager widget that comes with the phone. Allows you to close apps you are not currently using. And finally, you can try running the script found here:
http://forum.xda-developers.com/showthread.php?t=991276
It changes the way your phone uses resources to make it more efficient so it MIGHT also help battery life.
EDIT2: FINALLY, I know you said you're running at 800Mhz all day, but make sure you have your max set at 800 and min at 200. (you never mentioned you were underclocked before so just want you to make sure you are).
Click to expand...
Click to collapse
I just would like to say thanks so much for all the info and advice. You're Awesome!

beezar said:
Ok, I don't have that button, only got "Main, Profiles, Advanced, Info, About"
I think it's because I'm on a stock kernel; looked it up and undervolting on setCPU only runs on certain kernels apparently. Not sure though.
Click to expand...
Click to collapse
ditto. I'm on blazerROM v3.7. I think its using the stock kernel as well. I didn't have an undervolt tab. I did set up profiles similar to calks script:
100% - 85: 1200/200
84% - 35: 1000/200
34% and lower: 800/200
screen off: 800/200
The question is, do I need to undervolt? Or could I still be getting the same results if i'm on the stock kernel with this profile set up? I just set this up last night.

I was in the same boat... had Calk's v2.8.1 ROM with stock kernel... updated kernel to Gunslingers.. we will see how it goes... Noob myself, I thought Calk's ROM would take care of everything....
This leads me to think what else am I missing?? Anything I need to do/install/tweak??...
Calk's v2.8.1 with Gunslinger 1.4.1.
Thanks much!!
meatwadathf said:
Thats probably it. WTH are you doin on stock?!? Get on gunslinger right now!
Click to expand...
Click to collapse

[Noob Guide] What is and How to Undervolt

Hello, i wanna share my experience undervolting.
For people who dont know what undervolting is, its the power or energy that the battery send to the CPU with determinate clock speed.
For example:
384 Mhz is the lowest frequency of our CPU, it has a 800mv volt in the stock ROM with stock kernel.
So in theory, the battery send 800mv to the CPU when it runs at 384 Mhz.
The effect of undervolt the CPU is bassically get more battery life and at the same time reduce the temperature of the phone.Less energy send less battery used and less hot phone in our hands.
How to Undervolt
Im running Stock ROM with Ruby Kernel stable.
For undervolt you need a kernel that support it, you can do it in all rom if the kernel support that.
If you want to Undervolt, i recommend you to use Trickster MOD.
You can Undervolt maybe -50mv all frequencies and see how it goes. Some people can even in best cases undervolt -200 mv. But you need patience to test slowly.
DONT TICK SET AT BOOT IF NOT TESTED.
That why you cant:
For example if you undervolt -100mv and if not stable, and you have set at boot ticked, it will freeze the screen and after reboot it will happen again.
After you set the mv for undervolt, download from play store CPU stability test and run it.
It will test all CPU frequencies to see if it is stable.
If you dont get any SoD, congratulations its stable.
My undervolt settings are -100 or in some cases -75 mv and very stable. My battery temp is 30 C°.

Thank you very much
Sent from my LG-E975 using XDA Premium 4 mobile app

What is needed to undervolt?

Thanks for the info. What are your battery stats after undervolting? How does it suffer other operations of our mobile like browsing or gaming etc ?
Sent from my LG-E975 using xda app-developers app

You need to first make a backup, install a custom kernel, install trickster mod, and from there apply what this discussion is talking about. Good luck!
Sent from my Nexus 5 using xda app-developers app

lfuentes said:
What is needed to undervolt?
Click to expand...
Click to collapse
Bootloader unlocked with freegee and some kernel for your rom that supports undervolt.

nch26 said:
Bootloader unlocked with freegee and some kernel for your rom that supports undervolt.
Click to expand...
Click to collapse
And after that? Some specific app?

lfuentes said:
Some specific app?
Click to expand...
Click to collapse
Depends on the kernel. I am using Trickster Mod with Viper ZVC kernel. There are other control apps available -- some of them are kernel-specific, some are more universal (Kernel Tuner, Android Tuner, System Tuner, etc.). Look in your kernel's thread -- the developer usually tells which control app(s) to use with it.

nch26 said:
Hello, i wanna share my experience undervolting.
For people who dont know what undervolting is, its the power or energy that the battery send to the CPU with determinate clock speed.
For example:
384 Mhz is the lowest frequency of our CPU, it has a 800mv volt in the stock ROM with stock kernel.
So in theory, the battery send 800mv to the CPU when it runs at 384 Mhz.
The effect of undervolt the CPU is bassically get more battery life and at the same time reduce the temperature of the phone.Less energy send less battery used and less hot phone in our hands.
How to Undervolt
Im running Stock ROM with Ruby Kernel stable.
For undervolt you need a kernel that support it, you can do it in all rom if the kernel support that.
If you want to Undervolt, i recommend you to use Trickster MOD.
You can Undervolt maybe -50mv all frequencies and see how it goes. Some people can even in best cases undervolt -200 mv. But you need patience to test slowly.
DONT TICK SET AT BOOT IF NOT TESTED.
That why you cant:
For example if you undervolt -100mv and if not stable, and you have set at boot ticked, it will freeze the screen and after reboot it will happen again.
After you set the mv for undervolt, download from play store CPU stability test and run it.
It will test all CPU frequencies to see if it is stable.
If you dont get any SoD, congratulations its stable.
My undervolt settings are -100 or in some cases -75 mv and very stable. My battery temp is 30 C°.
Click to expand...
Click to collapse
Thank you, I'm using AK kernel with UKM and Synapse app from google playstore. Using E-975 (intl.). Can you suggest if I should change the global setting or the individual settings for frequencies ? I had recently (soft) bricked my phone by running benchmark at ~1900mhz CPU and 487mhz GPU (like a villain, I know. Re-connected battery to save it... phew..). I'm really cautious now and I just want it to be less hot and save some battery, that's all. Any guidance would be really appreciated... thanks

Claureid said:
Thank you, I'm using AK kernel with UKM and Synapse app from google playstore. Using E-975 (intl.). Can you suggest if I should change the global setting or the individual settings for frequencies ? I had recently (soft) bricked my phone by running benchmark at ~1900mhz CPU and 487mhz GPU (like a villain, I know. Re-connected battery to save it... phew..). I'm really cautious now and I just want it to be less hot and save some battery, that's all. Any guidance would be really appreciated... thanks
Click to expand...
Click to collapse
I dont have anymore this phone because some people stole my phone like 1 year ago. Sorry.

Oh okay, sad loss....

why cant i underclock the CPU?

Every time I try to underclock the CPU as soon as I leave the app the sliders go back to where they were originally. Even after applying on boot. Am I doing something wrong?

BakedOnSomeSour said:
Every time I try to underclock the CPU as soon as I leave the app the sliders go back to where they were originally. Even after applying on boot. Am I doing something wrong?
Click to expand...
Click to collapse
Since you've given virtually no information, I will assume that your phone is unrooted and/or running with the stock kernel. You will need to address both to be able to underclock.

Because underclocking is silly.

Wakamatsu said:
Since you've given virtually no information, I will assume that your phone is unrooted and/or running with the stock kernel. You will need to address both to be able to underclock.
Click to expand...
Click to collapse
I am rooted and running elementalX kernel

BakedOnSomeSour said:
I am rooted and running elementalX kernel
Click to expand...
Click to collapse
I'm not running EX. Does it use init.d or config script? Those may overwrite whatever method you're using to underclock at boot.

Underclocking-saving battery
Is a BIG LYE
CPU will not use full power (max freq) when not need.
Dont forget what is Mhz (how MUCH things CPU can do in what TIME) the only deffrent bettwen underclocked and overclocked is TIME.312Mhz will do something in 5 mins,but 2 Ghz will do it in 1 second. It just do faster,but battery use is same,count yourself

1. You warmed up a dusty thread.
2. Battery-work isn't simply product of time and frequency: longer low tasks eats fewer capacity than shorter peak ones.