Database Develop

[Q] Overclocking ?

I have a question: why I can't overclock my SGS past 1.2 ghz. When I try to set for example 1.3 or 1.4 it freezes and I take out the battery in order to make it work again. Is there something I do wrong, is it a general problem with more SGSs? If somebody can , I really appreciate. Thanks

it is a kernel thing.
the kernel has to support those frequencies.
Sent from my GT-I9000 using XDA Premium App

I tried with tegrak overclocking with voodoo kernel (the application itself doesn't need a kernal that supports those frequencies) and with Supe Optimized Kernel (1.4 ghz) and voltage control and setcpu and is the same result:freezing.

Not every cpu is capable of stable overclocking past a certain threshold. You have probably hit the max speed your cpu can maintain.

I agree with you but then why there are other people with the same phone as me that can overclock them at 1.4 ghz?

With CM7 or miui and either bilboa or zacharius kernel you can overclock to 1300 but I haven't found a kernel that allows 1400 either, I think those that are doing it are hacking the CPU settings themselves.
My phone gets really hot at 1300 running apps like dungeon defender so 1400 might just be a bit too much
Sent from my GT-I9000 using XDA App

I am using Darky's 9.3 ROM but my problem is that i can't even touch 1300 mhz because my phone freezes.

Maybe a dumb question, but, do you overvolt as well as overclock? Maybe the cpu isnt getting enough juice?
Sent from my GT-I9000 using XDA App

Mirasdad said:
Maybe a dumb question, but, do you overvolt as well as overclock? Maybe the cpu isnt getting enough juice?
Sent from my GT-I9000 using XDA App
Click to expand...
Click to collapse
+1... not sure if there is much benefit at all to undervolting.. it just seems to make it immediately less stable...
can someone shed some light?
I've seen someone test this on another forum somewhere, and the difference the undervolting makes to the battery length is negligible..

kickassdave said:
+1... not sure if there is much benefit at all to undervolting.. it just seems to make it immediately less stable...
can someone shed some light?
I've seen someone test this on another forum somewhere, and the difference the undervolting makes to the battery length is negligible..
Click to expand...
Click to collapse
The principles of ovetclocking a PC also aplly to phones. Undervolting reduces the power available to the CPU. Undervolt a little and you'll save a little power. Undervolt.too much and the CPU won't get enough power to do basic functions hence freezing.
Every CPU has a limit to which you can over clock. You can overvolt to a point but then then the CPU reaches its limit.
From what I understand (read in another post) the hummingbird processors are not suited to overclocking. Where the arm such as that in the Motorola milestone clock really well. (You can oc a 600mhz milestone to 1ghz before you start seeing instability)
Hope this helped.
Sent from my GT-I9000 using XDA App

I understand the intention of undervolting as i am pretty good with PCs. Got my good old i7 overclocked constantly. But undervolting on the SGS has yet to show me any definitive advantages.
Sent from my GT-I9000 using XDA App

galaxy note getting hot during moderate use?

My note gets really warm when doing things like playing tetris and browsing the app store is this normal?

What's your setup? Kernel, Rom, OC, Governor etc..
Sent from my GT-N7000 using XDA App

Pikkie86 said:
What's your setup? Kernel, Rom, OC, Governor etc..
Sent from my GT-N7000 using XDA App
Click to expand...
Click to collapse
Had the same problem too....sometimes when the phone is hot, theres a delay between making calls and the phone actually dialling. For info i'm on standard kl3 rom rooted with cf kernel. Phone is on on demand gov standard speed 1.4ghz. Appreciate any help...thanks.

I'm running Abyss 2.3, 100 - 1400 with Smartass V2 Governor. And it works fantastic I must say. You might wanna try a new Kernel FM 1.5 or Abyss 2.3
It's normal for the CPU to warm up when you're playing games and anything causing the CPU to run at max for a long time.
Install CPU Spy from the market and make sure you're phone goes into deep sleep and monitor the other frequencies as well.
After installing new roms or kernels the phone usually gets warm as well. Just reboot and it should be okay after a couple of minutes. That's what I experienced on my Note

Mine is completely stock... Haven't even installed 3 apps yet. The phone is never in a case and the heat appears to originate from the camera area any thoughts or ideas or am I just over reacting?
Btw the phone doesn't slow down or act different operationally just gets warm lol

below 20% of battery power any device getting hot.
plus maybe you making hard time to processor

naw the phone is at 80 percent as well :/ i think im just over thinking lol the phone is operating like a champ just want to make sure its nothing serious

Mine gets pretty hot in same area wen playing games, its just the processor heating up, sure it for force close the app, if it couldn't handle it!

Yeah.. Any processor will get hot when running. Remember there's nothing to keep it cool! So I think if you put it on your cheek and it stings after a while there may be a problem. Otherwise it's pretty normal for the Note.
Sent from my GT-N7000 using XDA App

alright sounds good ill keep my eye on it thx for the fast responses

[Q] How to Reduce CPU brick when Over Clocking.?[SOLVED]

when i use 729 or above my Cpu stops working and its Reboot automaticaly any way to fix

Unfortunately you can't fix it. The overclock ability of the cpu is different in each phone. Some x8 can run on 800+ MHz, some can't reach frequencies over 700MHz. Basically the SoC (the cpu, gpu, dsp and some other device) contains millions of transistors, but the whole chip is only ONE small piece of silicium, the transistors made by litographic and other complex (and expensive) procedures. The overclock ability depends on the material quality (damages in the silicium structure), soldering quality between the core and the casing, etc. So, no existing rules to the overclock, if you lucky you can reach high frequencies, if you unlucky you can't overclock.
Note: under the manufacturing procedure the chips get a selection after testing, the highest quality 7x27 chips marked and sold as 7x27T with default 800MHz.

There is an app in the market called No Frills CPU Control: https://play.google.com/store/apps/details?id=it.sineo.android.noFrillsCPU
It will automatically change your CPU frequencies during boot to save your phone from hard bricking.
Anyway CPU gets overheated by overclocking as more amount of power comes in to it than what is required. So as a long term effect your CPU will die out and also your Battery too. So I would say to use a faster rom and dont overclock the CPU to very high frequencies.

paulebe525 said:
when i use 729 or above my Cpu stops working and its Reboot automaticaly any way to fix
Click to expand...
Click to collapse
You are using stock kernel?
Overclocking more than 729 is not possible for stock kernel...
Use "set CPU" application & remember to uncheck "set on boot "option
# I couldnt over more than 729 in stock kernel but now with nAa kernel in can overclock up to 787 mhz
sent using" ultimate - ics - standard"

I Overclocked to 748 MHz on stock kernel....
Without any problem
sent from my W8 using client-server technology

governer also matters, I always use smartassv2

As someone wise already stated, better using something like FroyoPro which is blazing fast compared to any GB rom instead of overclocking.
I can do more with FroyoPro than anyone running GB, ICS or JB roms.
It's just simple - lighter code takes less cpu cycles therefore it is quicker.
GB, ICS and JB roms really are a waste of time once you've tried FroyoPro.
The other roms are really only good for proof of concept - not for everyday usage.

mujeeb999 said:
governer also matters, I always use smartassv2
Click to expand...
Click to collapse
I use
ondemand [email protected] [email protected] & using CPU under volt too
not very smooth but I don't care about smoothness
CtrlAltDelIrl said:
As someone wise already stated, better using something like FroyoPro which is blazing fast compared to any GB rom instead of overclocking.
I can do more with FroyoPro than anyone running GB, ICS or JB roms.
It's just simple - lighter code takes less cpu cycles therefore it is quicker.
GB, ICS and JB roms really are a waste of time once you've tried FroyoPro.
The other roms are really only good for proof of concept - not for everyday usage.
Click to expand...
Click to collapse
I tried it , it's not that much good:/ plus it have so many bugs with alfs kernel.(brightness bug for example)
I compared it with iXperia 8s rom before, froyopro is better @ one of 3d tests(just 2 fps better)
Other test were like iXpera & minicm7
Remember it's froyo & they are ginger ,they can run newer apps .
My opinion iXperia is our best rom till now
sent using" ultimate - ics - standard"

I use over 800 on CPU with smartassv2 with baa kernel
Sent from my E15i using xda app-developers app

senci00 said:
I use over 800 on CPU with smartassv2 with baa kernel
Sent from my E15i using xda app-developers app
Click to expand...
Click to collapse
baa kernel , what the....?
Sent from my E15i using xda app-developers app

Mockingbird said:
baa kernel , what the....?
Sent from my E15i using xda app-developers app
Click to expand...
Click to collapse
He means nAa kernel
Dictionary has changed the word , but wait why nAa is not in dictionary? It's super popular
sent using" ultimate - ics - standard"

CtrlAltDelIrl said:
As someone wise already stated, better using something like FroyoPro which is blazing fast compared to any GB rom instead of overclocking.
I can do more with FroyoPro than anyone running GB, ICS or JB roms.
It's just simple - lighter code takes less cpu cycles therefore it is quicker.
GB, ICS and JB roms really are a waste of time once you've tried FroyoPro.
The other roms are really only good for proof of concept - not for everyday usage.
Click to expand...
Click to collapse
I don't like the UI..otherwise I tried it and it sure was great.
Sent from my E15i using xda app-developers app

..

paulebe525 said:
when i use 729 or above my Cpu stops working and its Reboot automaticaly any way to fix
Click to expand...
Click to collapse
It also depends on the kernel you are using..Alfs is better in this aspect..but too much overclocking is not recommended.
if you are using custom kernel ,under CPU settings, select the frequencies you desire and do NOT select "Set on boot" . Even if your phone gets rebooted due to overclocking the default values will be applied at boot. This way you can avoid problems.
My X8 supports upto 787MHZ on nAa .
Hit thanks if i helped.

Just out of curiosity so upto how much can i overclock my awesome x8??
So far i've been to 729MHZ

Bunny2rock said:
Just out of curiosity so upto how much can i overclock my awesome x8??
So far i've been to 729MHZ
Click to expand...
Click to collapse
It depends on the kernel you are using..some people here overlocked @800Mhz successfully while my X8 got settled only at 787Mhz. Try yourself.

its nAa N is next to B ;-D

At 787hz doesn't restart
Mine work at 787 hz smoothly,,,,it restarts rearly...remember to have an app advanced task killer ...and set its setting to auto kill after screen turns off..Also set it to crazy kill....
Hope it will help you....
If I helped you,,,,don't forget to press thanks button..:fingers-crossed::fingers-crossed::fingers-crossed::fingers-crossed::fingers-crossed::fingers-crossed:

please read 2nd post by pilu. that's the best explanation. it's a hardware limitation, and it does NOT depend on the kernel.
[cAs]

Partially depends from the kernel too. The cpu clock is not only a simple value: xyz mhz. In the kernel this is a little bit complicated (pll frequencies, dividers, multipliers, voltage level, etc). Different kernels use different frequency tables, the results can be different, this the developer choice who can set different bus speeds (axi, ahb), base pll, voltage to every clock speed. You only see the frequencies in the different kernels, what is same, but the same speed maybe generated with different method.
So, the cpu overclock ability is 90% hardware limitation and 10% other things. Usually if you reach your own max speed with a kernel, the probability of higher speed with another kernel is small, the typical difference is nothing more than +/- 1 multiplier (+/- 19,2 mhz).
Sent from my E15i using xda app-developers app

Nexus 4 Undervolting

I've always been a big fan of undervolting. These are the lowest voltages I can get stable at these common speeds. I found I can underclock the Matr1x kernel further than some others I have tried for some unknown reason. How low have you been able to go? Also, what programs do you use to test stability? So far, I have been running Antutu test completion as a measure of stability. Any suggestions otherwise?
288MHz - 650mv
1.02Ghz - 800mv
1.51Ghz - 1000mv
ROM: Bionic AOSP V3
Kernel: Matr1x 6.5

Noob question~ Why do people undervolt?

WarToilet said:
Noob question~ Why do people undervolt?
Click to expand...
Click to collapse
To increase battery life,

The Long answer is that the CPU has a number of parameters where Clockspeed (MHz) and voltage (mV) are two. Clockspeed, well that is speed. Voltage is related to the amount of energy provided to the cpu, undervolting means that you feed the CPU less juice but demand that it runs at the same clocks. You are essentially starving the CPU,it uses less energy, but can become unstable if the voltage is insufficient to maintain operations. Manufactures always have extra voltage as a safety margin so power users can check their CPU bin (slow, normal, fast or faster) and lower voltages step by step until they crash the phone during a stress test, increase the voltage slightly and boom, your phone uses less battery power while being just as fast.

I undervolt to reduce heat. It makes a significant difference. The battery saving is minimal, but the temperature difference is VERY noticeable.

estallings15 said:
I undervolt to reduce heat. It makes a significant difference. The battery saving is minimal, but the temperature difference is VERY noticeable.
Click to expand...
Click to collapse
Took words from my mouth. This this and this. It reduces heat, which in turn reduces battery use. UV by itself doesn't save a lot of battery, it's the consequences of it. I'm normally not a fan of UV, but with current N4 sw/fw it NEEDS it. It's way too high.
Interesting observation. As of recently my phone jumps up by 3-5c from 37-38 hover. Never used to do it before, not until i got it up to 50c for about half an hour last week. Previously it would stay steadily at 37-38, now it spikes up now and again during use. What's interesting about is that once it goes over 40c battery use increases drastically. So i wonder if people that have really good battery life don't have phones that go over that temp often and vice versa.

I haven't played around with the values too much yet, just a -100mV across the board. This seems to work just fine, so I might experiment some more..
Using Franco test-r69 at the moment.
Sent from my Nexus 4 using xda premium

I undervolt to prevent heating like others say. My Antutu scores drop like a rock when I'm at stock clockspeeds mostly likely due to thermal throttling. Now I can run it repeatedly without having scores drop. It saves battery and runs faster while running games even for very short periods of time, so I am a big fan of undervolting. :good:

Undervolt to reduce power usage, think of the stock voltage as normally being more than is required, think of running for a bus yet you have 2 minutes why waste energy when you can walk and still make it .
Undervolt for less power usage and less heat produced meaning battery performance is better (cooler battery is a more efficient one) and performance is up as you avoid any thermal limits in place .
Great stuff undervolting, I have managed to get -150mV across the board ( 1.5ghz @ 1000mV) and 288mhz is 162.5mV .

I came from a nexus s ... And one member of xda went to amazing lengths to show that undervolting really made very little differences in battery life ... And it def wasn't worth the instability .
He did loads of tests and I mean loads and basically showed that in helped so little that if you had a reboot you would use more power in rebooting then saving via undervolt
However . it is worth it for the heat decrease for sure
Sent from my Nexus 4 using Tapatalk 2

italia0101 said:
I came from a nexus s ... And one member of xda went to amazing lengths to show that undervolting really made very little differences in battery life ... And it def wasn't worth the instability .
He did loads of tests and I mean loads and basically showed that in helped so little that if you had a reboot you would use more power in rebooting then saving via undervolt
However . it is worth it for the heat decrease for sure
Sent from my Nexus 4 using Tapatalk 2
Click to expand...
Click to collapse
The more the heat, the faster the battery drains. Since undervolting decreases heat, im sure it should increase battery life. Maybe not for browsing or calling, but playing a heavy 3D game.

is it normal that the higher the frequency the lower the voltage in setcpu?
screenshot: http://db.tt/k6r8c5oI
I'm quite new to nexus 4 undervolting, what's the average amount i can lower the voltages with? (i have a nominal CPU)
sent from my Nexus 4...

zakoo2 said:
how can you guys undervolt? is there an app for that? i bought Franco's kernel updater app, but there's no option to undervolt in there.
edit: just found an app called setcpu, is that it?
sent from my Nexus 4...
Click to expand...
Click to collapse
You can do it from franco kernel updater, from frequencies and voltages - voltages - cpu voltages
But i dont recommend you to undervolt if you dont know what you do.
Sent from my Nexus 4 using Tapatalk 2

aimcr7 said:
You can do it from franco kernel updater, from frequencies and voltages - voltages - cpu voltages
But i dont recommend you to undervolt if you dont know what you do.
Sent from my Nexus 4 using Tapatalk 2
Click to expand...
Click to collapse
I'm familiar with undervolting both on PC and on phone, but i had a Motorola defy before my nexus and undervolting there was a bit different.
sent from my Nexus 4...

zakoo2 said:
is it normal that the higher the frequency the lower the voltage in setcpu?
screenshot: http://db.tt/k6r8c5oI
I'm quite new to nexus 4 undervolting, what's the average amount i can lower the voltages with? (i have a nominal CPU)
sent from my Nexus 4...
Click to expand...
Click to collapse
How are you able to undervolt with SetCPU? I'm not seeing that option using CM10, and Harsh's kernel.

italia0101 said:
I came from a nexus s ... And one member of xda went to amazing lengths to show that undervolting really made very little differences in battery life ... And it def wasn't worth the instability .
He did loads of tests and I mean loads and basically showed that in helped so little that if you had a reboot you would use more power in rebooting then saving via undervolt
However . it is worth it for the heat decrease for sure
Sent from my Nexus 4 using Tapatalk 2
Click to expand...
Click to collapse
Former nexus s user here, the reason nexus s didn't benefit in battery life much was that it only had 1 core, and used a higher nm manufacturing process, 65nm -> 28nm. Lower voltages in the 28nm means that it multiplies the heat/power savings more than a 65nm, and the 4 cores multiply the savings by up to 4.

FatalityBoyZahy said:
How are you able to undervolt with SetCPU? I'm not seeing that option using CM10, and Harsh's kernel.
Click to expand...
Click to collapse
don't know, it was just there. did you try to reboot after installing the app?
I'm on Franco's kernel btw.
sent from my Nexus 4...

Pls what are the right values for under volting Samsung captivate
Sent from my SGH-I897 using xda premium

I am new to this and my battery goes +40°C when I play simple games... I am running Franco's kernel r71 should I do UV? If so how much? Thanks in advance
Sent from my Nexus 4 using xda app-developers app

xtremer92 said:
Pls what are the right values for under volting Samsung captivate
Sent from my SGH-I897 using xda premium
Click to expand...
Click to collapse
this is the lg nexus 4 forum.
sent from my Nexus 4...

perfomance

Im using zaiben rom on my lg optimus 4x hd. The performance is poor. Overall laggy and horrible gaming. I dont like using non stock based rom as they always have some bugs. I tried custom kernel like iodak werewolf but it made my phone heat up like crazy and unusable while charging. Any solution?

Buy another device stock Roms won't give you a good performance increase.
Sent from my LG-P880 using XDA Premium 4 mobile app

I used stock with zaiben kernel for months, uninstalled all the useless system apps with Root Uninstaller, including hangouts, gmail, maps, youtube ... and then installed them again as normal applications and used the greenefy to hibernate most applications, never had a problem of lagg or excess heat. Now I'm testing some KK ROMs , and do the same thing using iodak kernel 9.95 and I'm liking the results.
Make a bakcup and test some KK ROMs.

sarnz said:
Im using zaiben rom on my lg optimus 4x hd. The performance is poor. Overall laggy and horrible gaming. I dont like using non stock based rom as they always have some bugs. I tried custom kernel like iodak werewolf but it made my phone heat up like crazy and unusable while charging. Any solution?
Click to expand...
Click to collapse
Believe me, if you're using an LG phone, custom ROMs are ALWAYS better.
Stock ROM got too many bugs and I don't really like modified stock ROMs as people usually add more bloatware.
You should really give CM11 a try.Latest nightlies got very good performance with iodak 9.5 kernel.And no important bugs you should worry about.

ottomanhero said:
Believe me, if you're using an LG phone, custom ROMs are ALWAYS better.
Stock ROM got too many bugs and I don't really like modified stock ROMs as people usually add more bloatware.
You should really give CM11 a try.Latest nightlies got very good performance with iodak 9.5 kernel.And no important bugs you should worry about.
Click to expand...
Click to collapse
If u use iodak or werwolf kernel wont phone heat up like crazy if u use ur phone or do some gaming especially. If u do it while phone is charging?

sarnz said:
If u use iodak or werwolf kernel wont phone heat up like crazy if u use ur phone or do some gaming especially. If u do it while phone is charging?
Click to expand...
Click to collapse
If you use a custom kernel like iodak or ww, you can tweak many parameters. Among them there is cpu clock frequency and voltage.
Personally, I've set the stock 1500 mhz frequency and undervolted Mpu and cpu respectively by -30 and -75 mV. My phone runs smooth as silk and never gets horribly hot.
The guys who replied before me are right, though, stock roms or their derivates cannot be compared with CM11 in terms of performance they are way better. If I were you, I would flash one of the latest nightly and a custom kernel.
After some trials and errors you will be able to find the correct balance between over/underclocking and undervolting.
That is, if you are willing of doing some experiments. If you are looking for pre-cooked solutions I am afraid you will be deceived.

Ottonet said:
If you use a custom kernel like iodak or ww, you can tweak many parameters. Among them there is cpu clock frequency and voltage.
Personally, I've set the stock 1500 mhz frequency and undervolted Mpu and cpu respectively by -30 and -75 mV. My phone runs smooth as silk and never gets horribly hot.
The guys who replied before me are right, though, stock roms or their derivates cannot be compared with CM11 in terms of performance they are way better. If I were you, I would flash one of the latest nightly and a custom kernel.
After some trials and errors you will be able to find the correct balance between over/underclocking and undervolting.
That is, if you are willing of doing some experiments. If you are looking for pre-cooked solutions I am afraid you will be deceived.
Click to expand...
Click to collapse
Tnx...which app do you. Use for undervolting and overclocking?

sarnz said:
Tnx...which app do you. Use for undervolting and overclocking?
Click to expand...
Click to collapse
Trickstermod is a favorite for most of the people.Check your tegra variant, if it's 1 or above, you can use -122mV for CPU with no problems, max freq set to 1.5 ghz
I'm using this for months now and I sometimes forget my phone can get hot, unless I do heavy gaming for 30 mins or more.
Also try to overclock GPU.Helps a lot with FPS issues.
If you want good battery life and decent performance, underclock to 1300 mhz and undervolt by -122mV (if your variant is 1 or above)
Btw you can check your variant via /sys/devices/system/cpu/cpu0/cpufreq/tegravariant after installing iodak kernel.Higher the variant, the higher you can overclock/undervolt.

@UP
My tegra variant is 3 o.o But when I undervolt 30mV on CPU and 75mV on MPU - as @peppethustra recommend in http://forum.xda-developers.com/showthread.php?t=2761923&page=2 - it causes freezes, even when I underclock to 1,3GHz :/

Artisto said:
@UP
My tegra variant is 3 o.o But when I undervolt 30mV on CPU and 75mV on MPU - as @peppethustra recommend in http://forum.xda-developers.com/showthread.php?t=2761923&page=2 - it causes freezes, even when I underclock to 1,3GHz :/
Click to expand...
Click to collapse
All phones are different you may have to tweak the values to fit your needs. Try upping the LP CPU voltage to -10 and work your way down. For MPU try -25 and work your way down on that as well.
Mine is a variant 2 and can use -20 and -110 with the 520 GPU overclock
Edit: also for more performance try changing your minfree values. Lower values mean better multitasking and high values mean more killing of background apps but more free ram for the foreground apps. I personally use 8, 12, 45, 65, 95, 165
don't forget to hit thanks!