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[GUIDE] Undervolting for better battery life

Since this is a popular topic and since MSNBERG requested that i make this, i have decided to make it.
THE GUIDE TO UNDERVOLTING
What you will need:
PREFERABLY the application Tegrak OVERCLOCK PAID! can also use set cpu
TEGRAK
LOAD THE OVERCLOCK MODULE
go into the "TWEAKS" section and be sure to select DEADLINE as your scheduler!!!
you will see the option "OPTIMIZATION" go there
now you will see 5 levels to customize
ONLY LEVEL 0 CAN YOU CUSTOMIZE EVERYTHING
Now if you only want to undervolt with no overclock here is the chart you need to use ON GINGERBREAD:
UNDERVOLT SETTINGS
level0 - 1000 - 1155 - 1065 -------this level can change frequency but volts need to change as well
level1 - 800 - 1040 - 1035
level2 - 400 - 955 - 960
level3 - 200 - 835 - 950
level4 - 100 - 825 - 930
once you enter these in you can go to tegraks main menu and go into "PROFILE" and you can save your current settings or choose previous ones.
Here are some overclock values you can use for level 0
LEVEL 0 1100 1100 1090
LEVEL 0 1200 1195 1095
LEVEL 0 1300 1295 1115
LEVEL 0 1400 1315 1125
LEVEL 0 1500 1375-85 1150
LEVEL 0 1600 1400 1175-1200
***THIS WILL BE UPDATED WITH MORE INFO SOON

In my best Mr. Burns voice: Excellent!

Always wanted a undervolting guide. Nice!

:C my phone reboots with these undervolt values for some reason. I'm running Valhalla 1.1(haven't has the time to update and don't have wifi so...) and adrenaline shot X. I also have stability checker off so I'm sure that's not the issue. Its fine at first but then rebootes once I start mulititasking like listening to music, texting and getting on Facebook at the same time. Seems to work fine for everyone else so I don't get what's going on
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icy56 said:
:C my phone reboots with these undervolt values for some reason. I'm running Valhalla 1.1(haven't has the time to update and don't have wifi so...) and adrenaline shot X. I also have stability checker off so I'm sure that's not the issue. Its fine at first but then rebootes once I start mulititasking like listening to music, texting and getting on Facebook at the same time. Seems to work fine for everyone else so I don't get what's going on
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Click to expand...
Click to collapse
What governor and scheduler.are.you using
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I'm using ondemand as the governor. I have no idea what a scheduler is.
*edit*
The io scheduler? Well its set to cfq.
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Thanks a lot for this. I have been looking forward to this guide! Awesome work again Dsexton

icy56 said:
I'm using ondemand as the governor. I have no idea what a scheduler is.
*edit*
The io scheduler? Well its set to cfq.
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Click to expand...
Click to collapse
Change cfq to deadline
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jager555 said:
Change cfq to deadline
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Click to collapse
THANK YOU!!!! its finnaly working. Haven't had a single reboot yet. You sir just saved me a trip to T-Mobile. I thought there was something wrong with my phone since I was the only one getting that issue.
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jager555 said:
Change cfq to deadline
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Click to collapse
Thats what I was going to say, good job
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thanks dexter like always!!
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Hi guys,
Sorry for the rookey questions, but :
1. Do I need to install TegraK kernel ? If so, before or after installing TegraK overclock ?
2. Will TegraK OC free version do, or i need the paid version ? what's the difference ?
3. ICY56 - I'm having the exact configuration you have (Valhalla 1.1 and Adrenaline ShotX) can you please explain what changes you noticed regarding battery consumption, and doesn't it affect your phone responsiveness, stability and performance ?
Thanks,
Itzik.

Answers
1) Tegrak will work fine with valhalla, most (if not every) custom rom has the needed kernel already.
2) You need the paid version because free version only allows overclock up to 1.3 you cant adjust anything else.
3) I can't answer as I'm not set up the same, but from my understanding you shouldn't see any negative affects, just increased battery life.

Every time I try to undervolt my phone. It reboots constantly. Even with ICBINB KJ1. Scheduler is set to deadline and governor is set to ondemand. What am I doing wrong?

itzik2sh said:
Hi guys,
3. ICY56 - I'm having the exact configuration you have (Valhalla 1.1 and Adrenaline ShotX) can you please explain what changes you noticed regarding battery consumption, and doesn't it affect your phone responsiveness, stability and performance ?
Thanks,
Itzik.
Click to expand...
Click to collapse
Well I haven't noticed a decrease in performance and stability. The phone actually feels the exact same. As for bettery life, I can't really comment on that yet since I'm in the process of recalibrating my battery and I haven't been on UV long enough to say but so far battery life seems to be a little better
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Nice work... tried and works .... 1600mhz looks like unstable in phone....
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wizardslovak said:
Nice work... tried and works .... 1600mhz looks like unstable in phone....
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Click to expand...
Click to collapse
It can be stable you just need to up voltages a lil more
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dsexton702 said:
It can be stable you just need to up voltages a lil more
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Click to collapse
Well ill play with it more.... usually ill get restarts within few seconds of setting up new parms... thx again...
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Even if I increase voltage it still freezes and then restarts phone @ 1600mhz
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I've had 1664 mhz before stable. It can ne done, every phone will be different with what voltages work. experiment a little. But I wouldn't go to high, don't want a $500 paperweight.
@ 1.3 GHz, this phone its rock solid, so anything higher is over kill imo.
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Does overclock to 1.3 Ghz makes any sense?

I am using uc kernel and i am in a mood to overclock my phone.My question is same as topic.
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TheSG said:
I am using uc kernel and i am in a mood to overclock my phone.My question is same as topic.
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Click to expand...
Click to collapse
it depends totally on you..!!
it may make sense if you enjoy the activity itself..!
to b frank..i dont see such a major diff...but yea loading tym for games gets reduced...and battery drain..ahem ahem..
u got to test wether ur phone supports 1.3 or not..mine dint.. 1.25 is d limit for me..!

geekynoob said:
it depends totally on you..!!
it may make sense if you enjoy the activity itself..!
to b frank..i dont see such a major diff...but yea loading tym for games gets reduced...and battery drain..ahem ahem..
u got to test wether ur phone supports 1.3 or not..mine dint.. 1.25 is d limit for me..!
Click to expand...
Click to collapse
I overclocked to 1.3 ghz by uc kernel.
I wanna ask that at 1.3 is it safe for daily use becoz its quite high.
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And i also wanna know that does it will decrease my phone life?
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No one will recommend to fix max 1.3Ghz. Cause it may over heat your phone due to it is over clock.
Ofcause, this shorten you phone life.
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TheSG said:
And i also wanna know that does it will decrease my phone life?
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Click to collapse
ofcrs..it will...
ur emmc chip may burn out..
stay in limits.. 1ghz is enough i suppose..
but yea occassionally 1.2 dats it..!
cheers..

I m back to 1 ghz .
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Better be on 1Ghz as default. And when multitasking or playing games, OVERCLOCK!! But 1.2 maxx..
And TI OMAP's are powerfull enough,can resist overclocking.
And moreover 1.2 is standart overclocking for our OMAP.
Sent from my GT-I9003 CM9

Be on one ghz...
Seriously didnt fell any diff........
its ma opinion..use custom kernal....
on demand..
nd make a profile....when screen gets off...set cpu max to 800 min to 300..nd same while charging..saves battery

Guys, try below combination
governor : lionheart
I/O scheduler : sio
you will fell it.

[Q] Nofrills settings.

I'm running on RazoDroid v4.
Whats the best No-Frills settings for good battery and lag free usage (although there isn't any real lag ).
And what about OC? Is it safe?

Settings depends...
Lag free for one may not be lag free for another...
And oc til ~760mhz is pretty safe, and stable on most roms...
Try these settings if you wish:
Min max 245 600, smartassv2 noop
Typed using a small touchscreen

a.cid said:
Settings depends...
Lag free for one may not be lag free for another...
And oc til ~760mhz is pretty safe, and stable on most roms...
Try these settings if you wish:
Min max 245 600, smartassv2 noop
Typed using a small touchscreen
Click to expand...
Click to collapse
Alright will do bro
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Performance governor questions

Correct me if I'm wrong but isn't the performance governor main thing is to lock up the CPU at the highest speed at all times?
Using latest ICS build by paradroid and latest ics build by harsh.
I also notice why do our phones don't have these other governors like on demand,lag free etc. We only have 2 the other one with being powersave, just asking because this battery goes down quick!
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We don't have CPU performance governers because the tegra chip set isn't made like that, it has its own architecture that is made with its own governor for instance. Its made to work without anything like those. Something like that, hope this helps a little.
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noahk423 said:
We don't have CPU performance governers because the tegra chip set isn't made like that, it has its own architecture that is made with its own governor for instance. Its made to work without anything like those. Something like that, hope this helps a little.
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Click to collapse
Yup pretty much what he said.
Oh course your battery is dying quickly, you're on ICS.

buru898 said:
Yup pretty much what he said.
Oh course your battery is dying quickly, you're on ICS.
Click to expand...
Click to collapse
Lol thanks dudes
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Jellybean quick lag fix for games

Go to settings> display and untick auto adjust screen tone.
All the games run perfectly now!

Can I propose you to collaborate with Kyrillos13 in his thread? You could create a table with issues and fixes found for them in leaked JB. Then we would have issues and fixes in one place.
Anyway regarding lag-fix: I confirm, that it works for Modern Combat series.

Oh yeah im gonna flash JB 2morro .. Thanks to u !
Maybe u can beat me in English , but im not sure that u can beat me in mandarin

Doesn't work, Temple Run 2 still lags.
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malamharian said:
Doesn't work, Temple Run 2 still lags.
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Click to collapse
Have u set ur CPU 800 / 800 using NoFrills CPU?
Maybe u can beat me in English , but im not sure that u can beat me in mandarin

It seems to be a problem with that toogle too, it might be unticked but it is ztill on, experience with it and you'll get it right.
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Yes... Yes .....
The 3D graphics change in AnTuTu from : 733 to 2062

Rikxzdjz said:
Have u set ur CPU 800 / 800 using NoFrills CPU?
Maybe u can beat me in English , but im not sure that u can beat me in mandarin
Click to expand...
Click to collapse
how to set no frills cpu to 800? mine is when i tried to 800 the max and 200 the min.. when i apply it it says that 400 max 200 min.. how to fix this?

Turn off power saving in settinga.
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heml0ck said:
how to set no frills cpu to 800? mine is when i tried to 800 the max and 200 the min.. when i apply it it says that 400 max 200 min.. how to fix this?
Click to expand...
Click to collapse
have you turn off the cpu power saving on settings> power saving mode?
It will change the max from 400 to 800

gumball3000 said:
Turn off power saving in settinga.
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what is your governor? and i/o? thanks in advance man..

raf1987 said:
have you turn off the cpu power saving on settings> power saving mode?
It will change the max from 400 to 800
Click to expand...
Click to collapse
Yes with the cpu power saving the max cpu is 400 and the phone works very very slow.

Did you reduce temple run quality?
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My CPU always shows 800 Mhz Usage ... is there any way to make it 200 mhz ? Coz my phone gonna explode .. its super hott
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Rikxzdjz said:
My CPU always shows 800 Mhz Usage ... is there any way to make it 200 mhz ? Coz my phone gonna explode .. its super hott
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Click to collapse
Try ondemand cpu governor
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Rikxzdjz said:
My CPU always shows 800 Mhz Usage ... is there any way to make it 200 mhz ? Coz my phone gonna explode .. its super hott
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Click to collapse
Use no-frills app to make it 200

There's no governor
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That's I/O scheduler. Governor is bit higher. and it is ondemand already

Akhh damn..
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Hi guys, is this for rooted jb ore not? Can i use no frils cpu on not rooted? I got today official jb update with kies, phone forks fine, but i have lag on games.