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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 expand...
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 expand...
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 expand...
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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This is for people to lazy to start their own thread so please post here.
wrecless said:
I use Tegrak OC Pro with these settings.
Press optimization and enter these values.
level 0= 1200 - 1325 - 1100
level 1= 800 - 1075 - 1050
level 2= 400 - 1000 - 1000
level 3= 200 -900 - 980
level 4= 100 - 850 - 950
Make sure scaling is set to ondemand and set on boot is selected.
Then press Tweaks and make sure Io scheduler is set to deadline and
tweaks on boot is selected.
I got these settings from the thread linked below. (THANKS)
I have been using these settings for a few months with adrenaline shot on many different ROMS and I get at least 2 days battery life with regular use and my quad scores are 3000+. Phone never reboots, freezes, or gets hot.
I cant guarantee you will all have the same results but it mite be worth a try.
http://forum.xda-developers.com/showthread.php?t=1214314
Click to expand...
Click to collapse
Just a quick note, be sure you test these settings out before you select set on boot or you may have some issues. Every phone is slightly different in its own way and these undervolt settings may be too low and cause instability. I've personally had to increase these voltages slightly (in the past) for stability reasons.
If you guys want to save some time and effort download my attachment, unzip it, then place it inside tegrak/overclock on your SD. Itll be loaded then into your profiles on tegrak, just select it from the list and whamo, 1.2ghz oc with undervolt settings.
tehgyb said:
Just a quick note, be sure you test these settings out before you select set on boot or you may have some issues. Every phone is slightly different in its own way and these undervolt settings may be too low and cause instability. I've personally had to increase these voltages slightly (in the past) for stability reasons.
If you guys want to save some time and effort download my attachment, unzip it, then place it inside tegrak/overclock on your SD. Itll be loaded then into your profiles on tegrak, just select it from the list and whamo, 1.2ghz oc with undervolt settings.
Click to expand...
Click to collapse
Uhh are the settings different in your attachment?
wrecless said:
Uhh are the settings different in your attachment?
Click to expand...
Click to collapse
Very slightly, its a 1.2GHz oc,.and I had to up the voltages a little for stability... Nothing too too major
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tehgyb said:
Very slightly, its a 1.2GHz oc,.and I had to up the voltages a little for stability... Nothing too too major
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Click to expand...
Click to collapse
Dont up the voltages and post some attachment like its the same thing when its not. I'v been using these setting for 3 or 4 months thats why I posted them. If you like yours better post your own thread.
Jeez you mad or something? Lol
its based on the same thing and I only upped them for stability. I've also been using them for like 3 months. I don't see your problem here.
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wrecless said:
Dont up the voltages and post some attachment like its the same thing when its not. I'v been using these setting for 3 or 4 months thats why I posted them. If you like yours better post your own thread.
Click to expand...
Click to collapse
Lol wtf? He never claimed them to be the same. He clearly stated it was the settings for 1.2ghz. He wasn't doing anything wrong here, you wanted to share your settings and he wanted to share his. What's wrong with this forum.
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And yet he even states he got those values from another poster.
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ok my bad let's make it a post your tegrak settings thread. So please everyone post your Tegrak settings thanks.
wrecless said:
This is for people to lazy to start their own thread so please post here.
Click to expand...
Click to collapse
we dont need a bunch of different threads for settings, quit acting self righteous
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wrecless said:
ok my bad let's make it a post your tegrak settings thread. So please everyone post your Tegrak settings thanks.
Click to expand...
Click to collapse
Temper tantrum much? Sheesh man I was just helping you out...
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undervolted 1.4 anyone? i could use an extra .1 ghz hehe
I use dsexton702's suggestions found here: http://forum.xda-developers.com/showthread.php?t=1294815
7TimesCursed said:
unde
rvolted 1.4 anyone? i could use an extra .1 ghz hehe
Click to expand...
Click to collapse
Here's what I've been using for awhile now
Somairotevoli said:
Here's what I've been using for awhile now
Click to expand...
Click to collapse
what rom are you using?
mikhail777 said:
what rom are you using?
Click to expand...
Click to collapse
Mine, simplysimple
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Somairotevoli said:
Mine, simplysimple
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Click to expand...
Click to collapse
Sweet settings. How stable has the phone been and how's the battery life as well? Thx
Stable as stock. Battery life
excellent.
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Somairotevoli said:
Here's what I've been using for awhile now
Click to expand...
Click to collapse
Thanks!! Been searching forever haha
Somairotevoli said:
Here's what I've been using for awhile now
Click to expand...
Click to collapse
nice man! If you have it in a profile you can copy it from tegrak/overclock and post it like I did for other users to simply copy it to the same location, if you wanted ;P
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Is there an app that will work to control voltage on ICS yet?
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Nstools
Link - http://forum.xda-developers.com/showthread.php?t=1333696
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ROM Toolbox Pro also allows you too modify these settings.
Or setcpu
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Do these require specific kernels to work?
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Yes , not all kernels allow change voltages
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Voltage adjustment is not really necessary, unless you are increasing voltages for overclocking.
NStools is a Nexus user favorite, powerful, and free.
Braneless said:
Voltage adjustment is not really necessary, unless you are increasing voltages for overclocking.
NStools is a Nexus user favorite, powerful, and free.
Click to expand...
Click to collapse
Voltage adjustment is necessary when UVing so you can save battery duh??? lol
Even when overclocking.
XxLostSoulxX said:
Voltage adjustment is necessary when UVing so you can save battery duh??? lol
Even when overclocking.
Click to expand...
Click to collapse
Uhh, no. I suggest you read up on the findings/observations documented by multiple kernel developers and bedalus's kernel testing posted here. UV has no effect on power consumption.
Read first post http://forum.xda-developers.com/showthread.php?t=1448900
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Braneless said:
Uhh, no. I suggest you read up on the findings/observations documented by multiple kernel developers and bedalus's kernel testing posted here. UV has no effect on power consumption.
Click to expand...
Click to collapse
Well I tested it on my friends nexus s 4g and my epic 4g and with a lot of UVing. Lemme further explain.
Okay when you UV it just uses less amount of voltage on that frequency so in essence you save battery because not as much voltage is being used. Now however if you UV by a lot like -100mV and higher the phone will lagg a bit. If you overvolt your pushing more voltage to the phone which is more power being used.
I just tested my phone freqs. Used were 100,200,400,600,800,1000 And all were UVed by -100mV and playing games and using lower freqs it will lagg. When I didn't UV at all it never lagged.
Not to mention BTW I was @ 88% before and it only took me 2 mins to post this and now I'm at 86% with no UV at all. And last post before this I took me same time with UVed I went from 95% to 95% lol.
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XxLostSoulxX said:
Voltage adjustment is necessary when UVing so you can save battery duh??? lol
Even when overclocking.
Click to expand...
Click to collapse
Not according to my testing.
kernels ; battery ; ROM ; gov/sched
Now with summaries in the first posts. Convenient for XDA app users!
bedalus said:
Not according to my testing.
kernels ; battery ; ROM ; gov/sched
Now with summaries in the first posts. Convenient for XDA app users!
Click to expand...
Click to collapse
Well I can say every phone is a tad bit diff. But for whatever reason no matter who's phone when I UV if the phone handles it it. It saves me battery I want you to test this and see.
Run whatever scheduler and say performance run 100 MHz by -200mV like and 200 Mhz by -150mV and so forth. Play GtA 3 and watch when UVed it laggs and when Not it laggs stillbut not as bad. I mean hell even 1.5GHz no UV I still lagg haha
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Thanks guys! Ill check on this some more when I get home.
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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 expand...
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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Click to expand...
Click to collapse
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 expand...
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 expand...
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.
Hi guys, I was wondering how you test the stability of your undervolting. I have been using StabilityTest but even though I always pass the stress test I know that the phone is unstable because it sometimes reboots.
maps ambering
nor-ric said:
Hi guys, I was wondering how you test the stability of your undervolting. I have been using StabilityTest but even though I always pass the stress test I know that the phone is unstable because it sometimes reboots.
Click to expand...
Click to collapse
Hey,
Did you manage to undervolt the phone, and it is stable?
Could you publish the voltages?
Also, which ROM, Kernel and governor do you use?
Thanks, Nir
I have s4 processor, on 2.15 hboot s off, running viper one s 2.2 and I went down like 75mv at lowest cpu frequency and 50mv across the board and had no problems at all in a month at least.
I didn't try any lower than that cause I'd rather not push it.
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---------- Post added at 05:38 PM ---------- Previous post was at 05:36 PM ----------
I tried the set cpu stress test once I think and passed but I've owned the phone for a couple months now and never had a random reboot so that's the true test I guess.
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Nirosss said:
Hey,
Did you manage to undervolt the phone, and it is stable?
Could you publish the voltages?
Also, which ROM, Kernel and governor do you use?
Thanks, Nir
Click to expand...
Click to collapse
I'm on the stock (well, modded by me ) ICS 4.0.4 rom, Bricked kernel, intellidemand governor. I managed to undervolt quite well and I can say it's stable at 1,1V @1,5GHz. I could probably go a bit lower but I still don't know because I haven't find a good stress test which I can rely on. At 1,1V I have no random reboots, though.
350Rocket said:
I have s4 processor, on 2.15 hboot s off, running viper one s 2.2 and I went down like 75mv at lowest cpu frequency and 50mv across the board and had no problems at all in a month at least.
I didn't try any lower than that cause I'd rather not push it.
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---------- Post added at 05:38 PM ---------- Previous post was at 05:36 PM ----------
I tried the set cpu stress test once I think and passed but I've owned the phone for a couple months now and never had a random reboot so that's the true test I guess.
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Click to expand...
Click to collapse
Yes, I have tried setcpu too. But I always pass every test even if I know the phone is unstable...
Could you please check your voltage value at 1,5GHz?
Thanks!
1150mv at 1.5ghz
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---------- Post added at 10:58 PM ---------- Previous post was at 10:56 PM ----------
I'm going to switch kernels soon though cause of double tap to wake, keeps waking in my pocket and every reboot it reenables and I have a hard time getting the setting to save as 0.
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I just switched to elementalX kernel for the options on first boot. Disabled dtw and enabled s2w enabled lowest cpu idle (192) and 800mv idle undervolting.
So far so good, seems like my phone is not picky at all. I've actually never had it act up on anything so far, knock on wood.
I have it overclocked to max 1.8ghz now too.
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You can probably go lower than 1150mv @1,5GHz. I don't see any major benefit in battery life, though. The most important effect is the cpu temperature, especially now that's summer.
You were right, I went down further to [email protected] and lowered it equally almost across the board. Still no issues.
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It seems the only way to safely undervolt is trial and error...
I've now undervolted the lowest frequency (192mhz with my kernel) down to 700mv (the minimum allowed) and will see if it's stable.
So far it's stable. 700mv @ 192MHz!
Same here, no problem so far
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To cope with the summer, I've set the frequency to 1242MHz (instead of 1500MHz) and downvolted to 900mv! So huge of a downvolt, if you think that 1500Mhz requires 1,1V. :cyclops:
The user inteface is as smooth as before, no lags at all.
nor-ric said:
To cope with the summer, I've set the frequency to 1242MHz (instead of 1500MHz) and downvolted to 900mv! So huge of a downvolt, if you think that 1500Mhz requires 1,1V. :cyclops:
The user inteface is as smooth as before, no lags at all.
Click to expand...
Click to collapse
I just tried going down to 925mv at 1242mhz, but I still have max cpu at 1.5ghz, tried to lower it somewhat even across the board without going too low but ended up with a freeze/reboot under load so I have to try higher than that.
I can say that mine is stable at 900mV @1242MHz. It's been weeks without a crash, so far. If your sample is a bit unlucky it's likely that it will be stable at 25-50 mV higher than mine, not bad after all.
I did just that and so far no issues. Thanks
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does anyone actually get any tangible benefits from undervolting? It can't be much more than 2-3 degrees. How much battery percentage is saved on a full charge? how many more minutes do you get?
I can't say at all. My usage is never the same one day to the next and I've been using different ROMs since I started under volting. I will try to check overnight drain with stock vs under volted soon.
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I can't say, either. Nothing that's going to change your life, about battery life. About the temperature I haven't tested in a scientific way, but I can say that now it's cool even if the weather is really hot (30-35°).