Database Info

Does SetCPU overclocking raise voltage for the CPU ?

Been wondering this for a few days. Does setCPU raise CPU voltage when it overclocks ?
Because if it doesn't, then battery life shouldn't be affected.

I'm not sure about SetCPU itself, but in order to overclock, the voltage must be raised anyway - for example on my milestone ( using milestone-overclock ) when i set the maximum to 1.2Ghz, i have to change it to 80vsel. ... so battery life will be affected when you load a custom ROM or load the kernel module to overclock.
so when you load the overclocked setting in setCPU, it uses the vsel specifed from there, right? which would result in more voltage

[Q] Undervolting - Will it reduce device temp?

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.
Click to expand...
Click to collapse
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.
Click to expand...
Click to collapse
Galaxa12 said:
That's really hard to understand what you're trying to say...
Sent from my HTC Sensation 4G using XDA App
Click to expand...
Click to collapse
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?
Click to expand...
Click to collapse
Getting a Poco x3 pro soon and thinking about undervolting could you add me on discord and help me? If so add Gokn#4488

[Q] Is the phone broke down faster with OC?

Hello. I have got Galaxy3 with Kyrillos ROM v9.4 non-OC. Yesterday I installed G3MOD v2.3 OC kernel. I set CPU (in setCPU) frequency for 1200MHz and CPU has got 35 Celsius Degree in game (eg Burn the Rope, Angry Birds) and about 29 Celsius Degree in Opera Mini.
Is it harmful for CPU or phone?
Will my phone broke down faster than phone with CPU freq at 667MHz?
What is safe temperature for CPU in Galaxy3?
Thank for any help.
mosak

Yes it will. But don't worry by that time you would have changed your phone. These chips are made to last at least five yrs. Bottom line: don't worry abt of, I use it all the time
Cheers
Sent from my i9003 powered by Poseidon's Rom/Dxkp9 Junior + UC kernel

you should keep the temperature below 30 degrees
I use oc at 800hz and it's really fast, but if you need more don't abuse on time with high frequencies

Same for me, I use on a daily basis OC from 83 to 800 in lagfree
and i don't feel a big difference when i OC to 1000, but I don't play games a lot, and the games I play generaly don't need a big cpu...
you can find some tips to set your cpu
here: http://forum.xda-developers.com/showthread.php?p=13355368
and here: http://forum.xda-developers.com/showthread.php?t=1322607
and here is the topic about overclocking: http://forum.xda-developers.com/showthread.php?t=1266712&highlight=cpu+oc

So you would recommend using oc ROM? I am I
Using non-OC kyrillos 9.4 and It seems pretty fast to me. How much would I Get with settings to 1000 mhz?
And what about battery consumption on 1000 mhz?
Sent from my GT-I5800 using XDA App

i haven't noticed significant change to battery life between non-oc and oc. although i generally keep my governor as conservative although on kyrillos ROM is set to on demand as standard and before i changed didn't see change in battery performance.
Sent from my GT-I5800 using XDA App

mosak said:
Hello. I have got Galaxy3 with Kyrillos ROM v9.4 non-OC. Yesterday I installed G3MOD v2.3 OC kernel. I set CPU (in setCPU) frequency for 1200MHz and CPU has got 35 Celsius Degree in game (eg Burn the Rope, Angry Birds) and about 29 Celsius Degree in Opera Mini.
Is it harmful for CPU or phone?
Will my phone broke down faster than phone with CPU freq at 667MHz?
What is safe temperature for CPU in Galaxy3?
Thank for any help.
mosak
Click to expand...
Click to collapse
well i ve been using OC kernel for a long time...and it has not affected my phone in any bad way...it improves the performance....maybe u need to set sum profiles in setcpu....but all i can say that it doesnt affect the phone that much in my opinion but may eat up the battery....so better set the setcpu profiles

OC: Lagsfree, but shortens cpu's life...
Non-OC: Laggy, but save battery...

Default I9505 voltages and undervolting

I am trying to undervolt the i9505 to increase battery life.
It's easy to do once we root and flash a custom kernel allowing it.
Reason for doing so: I am rather disappointed with battery consumption currently. Even after removing all bloatwares and deactivating almost everything, it's hard to reach more than 4h30 screen on time.
So I reduced all CPU voltages about 25 - 50mV and now forgot what are default voltages as usual softwares (Set CPU and Voltage Control) don't keep track of default voltages anywhere. I couldn't find them by searching via Google neither...
Could somebody post the default voltages of the i9505?
Did anybody try under-volting about -50mV on each frequencies and noticed some improvements in battery life?

I've undervolted every frequenzy by -75. I can get 5 1/2 hours screen on time on a 24 hour usage.
Running ParanoidAndroid 4.3.
Sent from my GT-I9505 using xda app-developers app

Nice, it seems there is a noticeable improvement.
Could anyone post default voltages? And how much you reduced (still rock stable) in order to get a trend of this S600 undervolting capabilities.

Can custom kernel change CPU frequency by customs values?

Hello, i come here to ask if any kernel can allow customs frequency, I want to change a CPU frequency by a values and do same with the voltage (like a computers), because I want to do bench with a higher frequency than 3014MHz
Thanks

Even if a kernel allowed that high overclock. It'd overheat and cut the frequencies down giving you a worse bench reading than stock
Sent from my Nexus 5 using Tapatalk