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call me a noob but i gotta ask, just what does the kernals do to the phone thats so special, and all the ghz talk means what. i rooted my device for the teather and customizing, and now i see all this talk of kernal this, overclock that, and different ghz people are getting can someone explain to me what this does for your phone, should i be interested???
popcorn kernals?
the higher your ghz the faster your phone is.
overclocking is making your ghz higher
and kernals is what allows you to overclock(sorta)
lol dude...you should prob. take your time with customization but ghz is in reference to the speed of the processor. So...theoretically the higher the number the better your phone should perform...t, eoretically lol. Note that with a higher ghz value the worse your battery life will be unless the kernel is written really well. Also the kernel is the code that controls the devices hardware. (brain)
The nice thing is that you can generally play with different kernels without having to wipe and redo your phone. Also, if you really want to play with the various kernels out there you should get setcpu from the market. It let's you set your phone to make use of the processor in an over clocked (OC) application but it can also let you under clock your phone when your not using it, such as when the screen is off. This will help you conserve battery life. But be careful, over clocking can lead to over heating and other problems if you''re not careful
sounds very interesting, hmmm. so in the coming months people could create kernals to acheive speeds to challenge dual core phones
the kernels already are challenging dual core phones. The thunderbolt currently has a 2ghz kernel. The motorola atrix is a 1 ghz dual core... Thunderbolt definately rivals it with overclock kernel
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A "kernel" is the OS layer that sits between the applications and hardware. So, when an application says "light up LED" it eventually goes through the kernel to do this, most likely by a request/system call.
The speed of a CPU is measured in hertz (frequency). So, a 1 Ghz CPU can perform over 1 billion operations in one second. The frequency can be increased (overclocked). When you do so, this can damage the CPU (most likely due to heat). Heat can also cause the CPU to run efficiently. So, if you overclock too high, you COULD end up running slower than if you had just left it at 1 Ghz. Changing the frequency can also hinder stability.
so with it being so dangerous how do u know what kernal to trust and whats a safe limit in hertz, do u stop at 1.5, because 2ghz sounds like pushing it
This thread is so full of misinformation it is comical. To start, higher clock speed does not always result in better performance.
Secondly, everyone has their own preference. The best bet is to find the perfect balance for your needs. For many people, overclocking the CPU is not very beneficial... since the device is already plenty fast at stock 1GHz speeds. A lot of users would rather use custom kernels to make their device more power efficient and use SMARTASS governors and lower voltages.
Mess around with kernels and see what you like the best! (always remember to create a backup before flashing... this allows you to easily revert back if something goes awry).
You mean they're not popcorn kernels?? Lol
bmcclure937 said:
This thread is so full of misinformation it is comical. To start, higher clock speed does not always result in better performance.
Secondly, everyone has their own preference. The best bet is to find the perfect balance for your needs. For many people, overclocking the CPU is not very beneficial... since the device is already plenty fast at stock 1GHz speeds. A lot of users would rather use custom kernels to make their device more power efficient and use SMARTASS governors and lower voltages.
Mess around with kernels and see what you like the best! (always remember to create a backup before flashing... this allows you to easily revert back if something goes awry).
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Very well written and informative post, thanks brah!
skinien said:
A "kernel" is the OS layer that sits between the applications and hardware. So, when an application says "light up LED" it eventually goes through the kernel to do this, most likely by a request/system call.
The speed of a CPU is measured in hertz (frequency). So, a 1 Ghz CPU can perform over 1 billion operations in one second. The frequency can be increased (overclocked). When you do so, this can damage the CPU (most likely due to heat). Heat can also cause the CPU to run efficiently. So, if you overclock too high, you COULD end up running slower than if you had just left it at 1 Ghz. Changing the frequency can also hinder stability.
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+1 ninja point for correctly saying "over 1 billion"
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It should be noted that most phones are definitely capable of being overclocked to a reasonable extent.
the majority of kernels we nexus one users play with, is undervolting the and playing with teh voltage tables to maximize standby battery life, at the same time overclocking the high end to improve performance. but really its about lowering voltage to improve battery life.
Hi im thinking of doing a overclock to 1.5 ghz is it safe for the processor and the battery life witch already sucks. has anyone on here whos done it using setcpu and the rom had any problems after doing so ? and how much faster is 1.5 ghz compared to 1.2 ghz on the galaxy s2 ? and is it safe in general for the hardware of the phone will the phone get hotter or have over heating problems ? also what should my settings be for minimum maximum and the voltages ?
Of course oc is going to make ur battery life a lot worse.
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I haven' used Setcpu in a while but I believe it's got a feature to stress test the settings to see if it can handle it. Generally the worst that happens is it'll crash. So long as it doesn't get hot. Heat=death for electronics :')
I'm using tegrak (from market) to overclock to 1.4. I found 1.5 was too unstable. Noticeable difference between 1.2 & 1.4 is almost none. Also voltage increase of 50mv was needed to gain stability. There is not much point of overclocking the device IMO unless like me u just get some satisfaction out of knowing its running faster!
Sparksltd said:
I'm using tegrak (from market) to overclock to 1.4. I found 1.5 was too unstable. Noticeable difference between 1.2 & 1.4 is almost none. Also voltage increase of 50mv was needed to gain stability. There is not much point of overclocking the device IMO unless like me u just get some satisfaction out of knowing its running faster!
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This is true. I see no difference between 1.2 & 1.5ghz. But that doesn't keep me from running it at 1.5 when I'm playing a game anyway :'D
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GMoneyDTP said:
Hi im thinking of doing a overclock to 1.5 ghz is it safe for the processor and the battery life witch already sucks. has anyone on here whos done it using setcpu and the rom had any problems after doing so ? and how much faster is 1.5 ghz compared to 1.2 ghz on the galaxy s2 ? and is it safe in general for the hardware of the phone will the phone get hotter or have over heating problems ? also what should my settings be for minimum maximum and the voltages ?
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Well it's not safe, that I can say. Nothing is safe when you don't know what other things are changing with the clock rate. But still you could do that. You just have to make sure that the temperature is within limit, it will be definitely high, but make sure it's not that high.
And upping the clock rate to 1.5 GHz won't drain any extra battery than 1.2 GHz.
Regards.
GMoneyDTP said:
Hi im thinking of doing a overclock to 1.5 ghz is it safe for the processor and the battery life witch already sucks. has anyone on here whos done it using setcpu and the rom had any problems after doing so ? and how much faster is 1.5 ghz compared to 1.2 ghz on the galaxy s2 ? and is it safe in general for the hardware of the phone will the phone get hotter or have over heating problems ? also what should my settings be for minimum maximum and the voltages ?
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I tried the overclocking and each phone is different, increase then test, there are many benchmarking apps out there, I was stable at 1.4, my kernel does not include 1.5 GHz, and irregardless of what people may say, running the phone at higher clock speeds consistently DOES drain the battery more than 1.2GHz, unless you have found a way to manipulate the laws of physics. I don't see how one can fathom the thought that you can get a faster CPU at absolutely no cost.
Many people think when the CPU running faster means you complete tasks faster, hence 1.5 would complete a task faster than 1.2 and hence save battery, but I believe we use this phone as more than a calculator, so when you are performing a task that causes the CPU to run at 1.5 for a period of time e.g playing a game, browsing or whatever you do with your phone, then the CPU has to draw more power to keep the frequency at 1.5 as compared to the CPU running at 1.2
All in all, I dialed back because I was doing fine without it and I did not need it, other people may need it, and I wasn't gaining anything. to answer your question directly, it all depends on what you do with your phone, I'm not a huge gamer or anything and the 1.2GHz has proven to be more than enough for me to have a very pleasant experience using this device
Using it occasionally is safe, unless you stress your mobile at 1.5+ ghz for more than an hour or so.
The cpu governor will only make use of higher frequencies when there is a need, so mostly you will see your mobile idling at 200 mhz.
HTCinspiration said:
Of course oc is going to make ur battery life a lot worse.
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Not necessarily a lot worse. It depends on how you are using your phone, and what is causing it to run fast. If overclocking allows the phone to spend longer in deep sleep state, your battery will win. If its games, and by OC you achieve a higher frame rate, then the phone is doing more work, and this will be reflected in the battery life going down.
Most of the time, screen on is going to dominate. If you are a low screen-on user, I guess there is more chance for a higher max_cpu to be beneficial (it won't be used unless there is a task that requires it). More accurately, it helps some of the time, so the net result is not always obvious to predict.
How about undervolting?
Any danger in doing so- other than crashing when voltage is too low?
Before over clocking it might be worth downloading cpuspy from the market and seeing what time you spend in each speed.
Chances are most of the time you won't even hit 1.2 so might not have anything to gain by over clocking.
Then again I dont know how you use your device but I do know I was surprised when I found out.
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I've played with the SuperSonic version of this phone (which has a 1.5Ghz core) and the results from photos/video are much better, I'm pretty sure the cameras are exactly the same but the SuperSonic benefits from the higher CPU.
I think it would be cool if somebody could write an app that states
IF user opens Camera application voltage + clock speed is increased to allow stable 1.5GHz speed
WHEN user closes camera application overclock turns off.
Thoughts?
You have a smartphone! Not a pc!
I didnt see any advantage if you oc to 1.5
Btw In normal use your phone keep in 200mhz not 1.2.
I think i only hit 1.2 two or 3 times for 3 seconds in a full battery cycle.
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oc dosnt make sense ,there no noticeable diff,an yes very few times i hit 1.2 mostly its on 800 or few times on 1000....using a device with 1.5ghz proccesor an oc a device to 1.5 ghz which has 1ghz processor is very diff in nature....
Fair enough.
Well I wouldn't mind an app that mazes out at 1.2GHz with camera app open, as it can lag when shooting HD.
oc upto 1.4 ghz is fair enough, anything more than that is a waste. though you cant find any visible difference between 1,1.2 and 1.4 it does helps in maintaining smoothness on some situations.
yes very true i had oc my sgs1 at 1.2ghz and sgs2 at 1.4ghz but frankly i dint see the diff so after few days use i turnd to orignal settings....but many use oc an phone works fine,but depends on personel use......an yes as bala_gammer says its fine on 1.4ghz......cheeeerz
is overclocking galaxy s2 to 1.3gh safe
HEY pople and friends i want to overclock my samsung galaxy s2 to 1.3gh soo is it safe ??????.
imad.d said:
HEY pople and friends i want to overclock my samsung galaxy s2 to 1.3gh soo is it safe ??????.
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hey mate
u really think 100mhz would make that much change? its safe btw... seen people running s2 at clock speed higher than 1.3ghz
Plz help @..Longtime hd gaming(gta sa,nfs mw , asphalt,modern combat...) using 1.4 ghz is safe?
I also noted that gameloft games are makes more over heat for phone..
Which is the best and safe voltage level for 1.4 ghz 1250mv or 1275mv or 1300mv
Iam using siyah v6.0b5 kernel with wizzedkat 3.1..
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Well u do not see much difference on daily usage due to oc..but it does give a smoother experience while playing high quality games
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is there any option to raise SGS3 CPU to 2000mhz or something like that?
EDIT: NEW AS 14/7
kk so i guess the highest and most stablest cpu might be till 1800mhz
1and what about ram? there is any overclocking for ram memory? (couldnt find anything about it)
2what about GPU?
not yet, i think the highest clock right now is 1.5 for the sgs3
and RAM, NO you can not get MORE ram, you can eliminate apps that eating up ram to free some up but no way to get more ram.
is there any need to overclock this beast lol its fast enough
the2rrell said:
not yet, i think the highest clock right now is 1.5 for the sgs3
and RAM, NO you can not get MORE ram, you can eliminate apps that eating up ram to free some up but no way to get more ram.
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He wasn't referring to getting more RAM though was he? It read to me that he wanted to see if was possible to increase the clock speed of the RAM along with the CPU.
yep just wondering if there is any option for that as in SGS1+2
do you guys think when there is OC for s3, it will raise CPU to 2000MHz ?
darixtorento said:
yep just wondering if there is any option for that as in SGS1+2
do you guys think when there is OC for s3, it will raise CPU to 2000MHz ?
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Already there OC/UV running 1500Mhz right now. Max 1800Mhz.
Look into de developers topics for the kernel..
Ive looked there.. stiil misunderstand something-
there is any OC of 2000mhz now?
Note that the Exynos 4Core CPU is still not very well understood and may well get long-time damage when ramping up the clock speed aggressively.
Is there actually ANY need for going so high except to show off?
You'll be measuring any speed improvement in loading things up in microseconds because people say Samsung still hasn't fully optimised the phone to the OS yet, so I think it's a bit pointless stressing the phone that much.
1.8GHZ is currently the max however with kmemhelper you should be able to change the last frequency to 2.0...
Hell I'll even find out the script for you if you are mad enough to try it first
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I doubt you'll get it 2GHz stable anyway. From what I've heard most people have theirs crap out at 1.8GHz.
kk so i guess the highest and most stablest cpu might be till 1800mhz
1and what about ram? there is any overclocking for ram memory? (couldnt find anything about it)
2what about GPU?
to make it clear:
i wanna know which ram overclocking is available to do on the SGS3 as long as the device still stables.
same with GPU and all those stuff.. there is a really good lvl of OC like in S1 S2?
still waiting for help
I would go for Siyah kernel and try 1.8 GHz then under volt using voltage control or extweaks app. Most phones can go 100 mv on all steps except maybe the very highest clocks.
gpu overclock is not possible yet
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OC of the ram is connected to bus speed and this is very different to the fixed bus in the sgs1 so nothing like live oc is possible. Still 400 mhz bus speed is 4 times faster than the CHAt!
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I`am running RGUI v7 rom and siyah kernel 1.3.8a. My clockspeed is 1600 Mhz and is rockstable, snappy and battery life is great.
I don`t go any higher for daily use, it doesn`t make much difference in speed and i think it cuts down your cpu-life.
ho so no LIVE OC is available now? (like in S1 and s2)?
well hoping it will be possible to add those functions(live oc, ram, cpu, and more..) in Android JB 4.1
My Captivate (SGS1) can hit 1.92GHz... So I think that a CPU with a stock clock of 1.4GHz can hit 2GHz easily. We will just have to see. I am not pushing this phone though. I don't have $700 to replace it.
well hoping it will be possible to add those functions(live oc, ram, cpu, and more..) in Android JB 4.1
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That's not depended on the ROM but on whether the hardware allows to modify the values and if kernel developers figure out how to do it.
Hi! I have problem with perseus Kernel If I overclock cpu a little bit, All the same the problem (If I start play game some time it will restart), it does not matter how much overclocked. I tested 1.7Ghz clock and test it For 1375mv, 1400mv, 1425mv, and it's not effective and between a perseus rom freezes lock screen and I have to restart it :S, siyah kernel will not let me even overclock more than 1.5GHz can someone help me with this problem :laugh:, I love overclocking :silly:
SiyahKernel S3 v1.5 CPU over/underclock: 100-1800MHz 18-steps , GPU over/underclock: 54-800MHz ,Perfect to play , i have been using for a long time and i had never any problems ........
devid801 said:
SiyahKernel S3 v1.5 CPU over/underclock: 100-1800MHz 18-steps , GPU over/underclock: 54-800MHz ,Perfect to play , i have been using for a long time and i had never any problems ........
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Okay But, why I'm not able to overclock 1.8GhZ its show me 200-1.5GhZ I tried overclock stweaks, cpu master, set cpu, and Foxhound extras but not help I try flash siyah again If that help.. Block story max settings eat really MUCH performance
I'm not even able hit over the 1.5GhZ and it show me 25-1.5GhZ (((
Anyone?
Anyone know what I do wrong if I'm not able hit 1.8GhZ?
yes,, your cpu isn't up to it, simple. With overclocking make small steps, note what you are doing, experiment with voltages, but all chips are different so experimentation is the only way, along with lots of reading and learning, skill aided by searching
slaphead20 said:
yes,, your cpu isn't up to it, simple. With overclocking make small steps, note what you are doing, experiment with voltages, but all chips are different so experimentation is the only way, along with lots of reading and learning, skill aided by searching
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okay But why this perseus give me overclock more than 1.5GhZ But Perseus is so buggy :S and I can normally overclock Gpu with siyah kernel but If I run test I am not note difference, 1 better fps for 700MhZ GPU Clock My Phone is so strange
saletan said:
okay But why this perseus give me overclock more than 1.5GhZ But Perseus is so buggy :S and I can normally overclock Gpu with siyah kernel but If I run test I am not note difference, 1 better fps for 700MhZ GPU Clock My Phone is so strange
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you have to understand the fact that the kernel is in alpha stage, so if you dont know what you are doing you shouldnt have flashed it. and also all chips are not capable of handling higher frequency, 1.6 ghz should be asafe bet for all processors..
700mhz in siyah makes a big impact depending on the benchmark you run.. check the thrread in my sig for more info.
Thanks all for posts! I figured it out, I give more juice for all these steps for perseus alpha And not anymore reboots. 1.8 GhZ 1450mv 1.7GhZ 1400mv, 1.6GhZ 1350mV, 1.5GhZ 1300mV, I run now 1.7GhZ for dual core mode, I'll try soon run my phone quad core mode . But I can't overclock my gpu with perseus and siyah rom doesn't give me overclock more than 1.5ghZ DD so strange Ps: 1.7 GhZ Dual core My Cpu score is 8123 and memory 5538 on quandrant benchmark.
Edit: If my phone a little bit overheat it reboot same thing is 1.6GhZ, 1.7GhZ, 1.8GhZ. 1.6GhZ I run stability test about 1-2min and it reboot, Battery About 41 degrees Celsius :S
Why in the name of all that is holy would you overclock your CPU, and then run it in dual core mode??
You would be better off leaving it at 1.4ghz in quad core mode.
That seems pointless.
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I make video today
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http://www.youtube.com/watch?v=glPp2ORTvFo&feature=youtu.be Sorry for poor video my video editing software doesn't working But If I run test about 1 min device reboot My video will not be saved if it shuts down so I had to stop Stability Test before a turn off.
I will do later in the evening siyah kernel video for overclocking problem
Does anyone know any apps that control the CORES? I have had a tough time finding an app that will let me run on a single core to save significant power. I know there's undervolting and lowering cpu speed but I'm looking for a core control app,
Thaxtonator said:
Does anyone know any apps that control the CORES? I have had a tough time finding an app that will let me run on a single core to save significant power. I know there's undervolting and lowering cpu speed but I'm looking for a core control app,
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CPU Sleeper
My guess is you want better battery life so rather than making 1 core sleep try setting your cpu speed to 1ghz or 800mhz as top speed it will be as slow as just 1 core
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