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[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?
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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

Did anyone go higher than 825MHz?

Title says all.idk if its even possible

Are you smart?
Sent from my X8 using XDA Premium App

When I go higher than 748MHz, it causes bootloop.
I also think that overclocking is useless, well you get a bit higher Quadrant scores, but it also causes higher battery use, and it´s not so good for the CPU, I think.
And going higher than 825 MHz is, in my opinion, mad.

@xperianpro-dont troll,its just a question.
@codfreak-well,i personally dont use overclock because i need battery,and i dont use my phone for anything else beside wifi,facebook and taptalk.sometimes games but not much.for me normal frequency is from 710mhz to 787mhz.

xperiauser132 said:
@xperianpro-dont troll,its just a question.
@codfreak-well,i personally dont use overclock because i need battery,and i dont use my phone for anything else beside wifi,facebook and taptalk.sometimes games but not much.for me normal frequency is from 710mhz to 787mhz.
Click to expand...
Click to collapse
Im not troll you need to know that our processor cant go higher.

Im drunk,amd i realy dont want to fight right now.

XperianPro said:
Are you smart?
Sent from my X8 using XDA Premium App
Click to expand...
Click to collapse
Hi, how did you get this score ??! which ROM use ?
thanks

My phone can OC to 768 Mhz with no boot/restART
But when i test my phone @ 787 Mhz or higher, it's good at SetCPU application but when i'm going to home (LP) my phone reboot(??)
Luckily i got 768 because no many people can get that! haha

@Xperianpro/as-mario
Our processor might be able to go higher but the problem is the voltage. Each x8 has a slightly different voltage supplied to the processor so some can OC to 825, some can OC only to 748 etc. I can OC to 768. I heard that the LG GT540 can OC to 900 MHz.
--
Basically ppl can OC to 825 but it's kinda rare. Usually, most can OC to 748 only. It might be possible to OC to over 825 but it will be unstable for most people.

Our X8 Voltage is 3-4-5-6-7
if you wanna get higher frequencies you must overvolt and melt your Processor

[Q] Overclocking the Tab

Hey does someone know the overclock configuration that was posted on the Overcome page once? I'm running on Overcome 4.1 with the belonging Kernel which allows me to get to 1.6ghz (theoretically) and I'd like to overclock to 1.2ghz.
I'd be very grateful if you could help me
Edit: I found this http://forum.xda-developers.com/showthread.php?t=1036020 but does this guide also apply to Overcome 4.1?

Just use Voltage Control or SetCPU. It's really not that hard at all. Just be careful with your voltages-overvolting will eat your battery more but may allow you to reach higher frequencies, and undervolting may get you better battery life but may make your tab unstable.
As a reference, I have my Tab running at 100-1.4 with smartassv2 and stock voltages on the Overcome 4.0 kernel.
Sent from my SCH-I510 using xda premium

thanks ;-) but which sheduler do you use?
for those who also have problems with overclocking and for
the newbies (like me =-D) I found this page which describes the usage of shedulers
and governors http://forum.xda-developers.com/showthread.php?p=19846297

IO Scheduler: CFQ
Governor: Smartassv2
At least that's what I use on my phone. I just left everything alone on my tab.
Sent from my SCH-I510 using xda premium

thanks, you helped me a lot ;-)
I'm using Voltage Control on 1.3ghz with stock voltages on smartassv2 and deadline and it runs pretty stable

Thanks, useful tip for me too.

I use SetCPU
OC max 1.3GHz, min 100MHz
-75mV from 100Mhz --> 1.0GHz and then -50 from 1.0GHz to 1.3GHz
PLUS various profiles to set max to 800MHz whilst screen off etc etc

that's exactly the same that I did =-D=-D=-D

That's pretty much what I have. OP, sorry I couldn't answer your PM, my tab is currently bricked and I haven't had the chance to recover it.
Sent from my SCH-I510 using xda premium

yea I have time =-D that's not so important, just make sure your tab runs again ;-)

phlooke said:
I use SetCPU
OC max 1.3GHz, min 100MHz
-75mV from 100Mhz --> 1.0GHz and then -50 from 1.0GHz to 1.3GHz
PLUS various profiles to set max to 800MHz whilst screen off etc etc
Click to expand...
Click to collapse
This is what worked for me as well, just don't check"set at boot" option till you've tried that speed for a few days and you config proves stable.

Joe Blough said:
This is what worked for me as well, just don't check"set at boot" option till you've tried that speed for a few days and you config proves stable.
Click to expand...
Click to collapse
Haha, I did check that option when I foolishly set the OC max to 1.6GHz
...I was just able to uninstall between one of the many lopping reboots
Anyway all, sorted now. In fact I have reverted to stock voltage for 1GHz up to 1.3GHz because playing Trial Xtreme2 would cause a reboot when I'd exited the game - seem's all ok now *touches wood*

[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....?
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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

Is there any Kernel with CPU OC functionality available?

Hello,
as mentioned in the headline, is there any CPU OC kernel available? I have only found GPU OC kernels but non with CPU OC capability.
Thank you for answer.

raz0r09 said:
Hello,
as mentioned in the headline, is there any CPU OC kernel available? I have only found GPU OC kernels but non with CPU OC capability.
Thank you for answer.
Click to expand...
Click to collapse
Kholks kernel has cpu OC

Whow, what a fast answer
Do you know how high the maximum CPU OC is?

OK, I´ve found it.
Overclocked. GPU @ 584MHz -- CPU @ 1.65GHz(x4)
Click to expand...
Click to collapse
But there is only V0.1 with no updates available ;(

raz0r09 said:
OK, I´ve found it.
But there is only V0.1 with no updates available ;(
Click to expand...
Click to collapse
There is an update coming very soon, possibly today as he's announced everything's working. This new one will be fast as hell and everything will work as it should. The current alpha for stock is OK, just YouTube freezes and reboot just gets stuck so you need to pull battery, other than that its a solid kernel
Sent from my rooted P880

Yeah, good news!

alekthefirst said:
Kholks kernel has cpu OC
Click to expand...
Click to collapse
Realy OC for this Kernel?? I can set to max. 1700 Mhz with different tools, but max. reached Mhz is 1500,same as stock...

Fladder72 said:
Realy OC for this Kernel?? I can set to max. 1700 Mhz with different tools, but max. reached Mhz is 1500,same as stock...
Click to expand...
Click to collapse
1.7 is overkill, no app needs it. What is really needed is a kernel that uses cores better and doesn't cut the frequency when full quad is used. This one for example: http://forum.xda-developers.com/showthread.php?t=2270308
Sent from my rooted P880

Fladder72 said:
Realy OC for this Kernel?? I can set to max. 1700 Mhz with different tools, but max. reached Mhz is 1500,same as stock...
Click to expand...
Click to collapse
well mine did actually set to 1.7 ghz and the result was very visible in bencmarks

Lol, isn't that a battery drainer? I underclock mine to 1Ghz.

Tcm9669 said:
Lol, isn't that a battery drainer? I underclock mine to 1Ghz.
Click to expand...
Click to collapse
nah, my signature lies as i flashed back to normal stock CM kernel due to the fact that Kholks current release doesnt have wifi, i will wait for his new (or the next werewolf) that has both GPU and CPU overclocked, and then my battery would be F****** XD
and yes, it was a battery drainer