Undervolt and underclock for Battery - Galaxy S 4 Q&A, Help & Troubleshooting

Hello Everyone
I am using android kitkat Ozcan rom with Perseus-alpha19.1-i9500
i want to underclock my cpu and specially undervolt to reduce battery consumption and decrease hotness of my I9500
this kernel has an apps (Synapse) which i can modify cpu
but its has many option whit 8 core big and little
i confused
please help me to undervolt it by synapse or any other app
provide me by best configuration and setting
TNX

Related

Help With S Tweaks

Hi
I underclock my cpu to 1.4 and GPU to 350
I'm asking for if I must change cpu and gpu voltage too ?
Sent From my i9500 With ☆★Crash Rom☆★

Best cpu app for I9500

Hello guys I have a I9500 (s4) and just wanted to know a good cpu app which would make my experience on my rom even more fast.
I don't have any experience with these apps so need help.I don't wanna overclock but wanna use the cpu speed to the full when Iam on my phone using it.
Thanks alot
Sent from my GT-I9500
paras said:
Hello guys I have a I9500 (s4) and just wanted to know a good cpu app which would make my experience on my rom even more fast.
I don't have any experience with these apps so need help.I don't wanna overclock but wanna use the cpu speed to the full when Iam on my phone using it.
Thanks alot
Sent from my GT-I9500
Click to expand...
Click to collapse
you will need a custom kernal for that
but 2 good ones here
https://play.google.com/store/apps/details?id=com.bigeyes0x0.trickstermod&hl=en_GB
https://play.google.com/store/apps/details?id=rs.pedjaapps.KernelTuner.compatibility&hl=en_GB
Running the cpu of the i9500 constantly on max freq will result in a very very hot phone with extreme battery drain ...
And there is no reason you should do that ... also if you want to mess with cpu frequencies, governors and stuff you need to install a custom kernel ... but since you won't know what you'll be doing i'd advise against this ...
AvelonTs said:
Running the cpu of the i9500 constantly on max freq will result in a very very hot phone with extreme battery drain ...
And there is no reason you should do that ... also if you want to mess with cpu frequencies, governors and stuff you need to install a custom kernel ... but since you won't know what you'll be doing i'd advise against this ...
Click to expand...
Click to collapse
Thanks bro so should I just install setcpu or leave it as it is?
Sent from my GT-I9500

[Q]Need help with kernel and game

Hi everybody
I have use Nexus 4 for long time....and i get problem with Asphalt 8....when i play this game with stock rom it's no lag and very smooth....but when i try it with another rom like carbon, mahdi, cm11,...i always get some lag....i try some kernel hells core, hells doctor, experimental and set ondemand + noop + max 1.5Ghz + min 384Mhz and nothing change....can anybody tell me why and how to fix it ??? I love this game
tuandark said:
Hi everybody
I have use Nexus 4 for long time....and i get problem with Asphalt 8....when i play this game with stock rom it's no lag and very smooth....but when i try it with another rom like carbon, mahdi, cm11,...i always get some lag....i try some kernel hells core, hells doctor, experimental and set ondemand + noop + max 1.5Ghz + min 384Mhz and nothing change....can anybody tell me why and how to fix it ??? I love this game
Click to expand...
Click to collapse
use ROW, i think the problem here is the IO, dont use noop
C4SCA said:
use ROW, i think the problem here is the IO, dont use noop
Click to expand...
Click to collapse
so what governor is better ???
can u teach me how to set Governor, IO, UV for good battery life ???
tuandark said:
so what governor is better ???
can u teach me how to set Governor, IO, UV for good battery life ???
Click to expand...
Click to collapse
depending on the kernel u are using, u have different options.
to configure the kernel settings use any app like Trickster mod.
for battery life try to lower the max cpu frequency, u may undervolt a bit too but the most important is to choose a good governor that dont raise the cpu clock without any real need (keeping ur cpu a lower frequency == less heat and less voltage used == better battery life and somewhat better preformance ratio).
For IO: ROW, FIOPS or tweaked BFQ.
i recommend u to take a look at moob kernel (from @bedalus), and u will understand what i stated about UV not being the best way to save battery and produce less heat
I have a kernel for you to try http://forum.xda-developers.com/showpost.php?p=51373661&postcount=1199
I always appreciate help testing

The best CPU governor for optimal battery saving

Guys, i need your opinions -
How do u think - what is the best CPU governor for maximum battery life ?
The possibilities are in the poll.
Keep in mind, that different cpu governors have different modes, so it will be advisable not only to vote for your favourite, but also to mention in the topic your prefered profile for the respective governor...
The mods for the poll are taken from arter97kernel...
that's how I use when I need that the battery lasts longer and gives me results.
sometimes even put the processor speed to 1000MHz .
It gets a little slow but it can handle
I forgot screen cpu but I have at 1400MHz and undervolt light
Hey ^^
well i prefer zzmoove with the zzmoove battery yank profile on Boeffla kernel 2.8 for Slimkat (check my Profile for more Infos: Link). It runs smooth, gives me more then enough Performance and also good Battery Saving. It also features a frequency lock when turning off the Screen and limits the max Freq to 600 mhz which is perfect if you want to run downloads or something similar without problems in the background and your screen is off, but also gives you good powersaving. Unfortunately if you hear Music it can stutter in zzmoove because of the Hotplugging functionality even when the screen is off. To solve this problem you have to turn off the Hotplugging Functionality at Screen off (i read that somewhere, but forgot where).
greetings kaz
gsms said:
Guys, i need your opinions -
How do u think - what is the best CPU governor for maximum battery life ?
The possibilities are in the poll.
Keep in mind, that different cpu governors have different modes, so it will be advisable not only to vote for your favourite, but also to mention in the topic your prefered profile for the respective governor...
The mods for the poll are taken from arter97kernel...
Click to expand...
Click to collapse
I use S5 Sensation in my I9300 and the battery life is the better I have in my phone. The governor used by default is pegasusq.

GT-i9505 battery drain + CPU over 90° C/194° F

Hi there.
I have problem with battery drain and my CPU have 90° C. I want to underclock CPU. I want to have small ROM with CPU over/underclock but I don't know which one it is. Please help me.
Thanks
CPU Over/underclock is mostly kernel dependent.
With that in mind, pretty much all kernels available for this rom have the posibility of underclocking.
But if you want overclock then only Hulk kernel offers that.
If you want a small rom you might try SlimLP. I haven't ran it myself, but judging by the name it should be slim.
Another to try would be SaberMod CM12.1. You will have to download Kernel Adiutor, or another kernel tweaking app, for this one.

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