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I've seen some people that have OC'd their CPU.
I know OC'ing a computer's cpu eventually takes it's toll on the processor, and you get less life out of it. Not to mention the extra heat from oc'in it. Does the same apply to these phones?
Do you get a lot more heat from the cpu?
You can monitor your CPU temperature using free apps and judge for yourself, since every phone may differ in optimal oc/uv settings. However, I personally haven't heard of anyone burning out their phone CPU through an overclocked kernel, since they're generally limited to 'tested' oc ranges.
There is actually a lot of code written into the Galaxy S by Samsung for 1.2 Ghz, but it was taken out due to charging instability. The temp on mine has never gotten too high at 1.2, especially since it doesn't spend a lot of time there unless you are playing 3D intensive games.
Hey Everyone, I just wanna know if I Can OC My SGS to 1.2GHz Without any problems, Because I heared that OC SGS is not stable and It's dagerous for my Phone's Life, I that True ?
-Thanks For Replying-
Shadow Life said:
Hey Everyone, I just wanna know if I Can OC My SGS to 1.2GHz Without any problems, Because I heared that OC SGS is not stable and It's dagerous for my Phone's Life, I that True ?
-Thanks For Replying-
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Yes you can, depending on the kernel you use, oc your phone even up to 1.5 ghz.
Flash Glitch, MNICS, Devil or Semaphore Kernel for ICS roms
Do so with care as OCing WILL degrade your processor faster.
It depends a bit on your luck. Processors aren't all the same (variance in quality during manufacturing), the 1 ghz that is the default is considered a 'safe' level and every processor will be able to do that frequency. Usually though, there's a fair amount of buffer, so most processors can go beyond 1ghz to say 1.2 without any issue.
As the frequency increases, stability decreases. This means your phone will become more prone to crashing. Some people are lucky and can go very high (1.5, 1.7?), while others might start facing instability at 1.2. Won't know until you try. It's unlikely to cause permanent damage anyway, just change back to 1.0 if it's unstable
It probably does increase wear and tear of processor somewhat, but considering people will buy a new phone within 1-2 years, there's really no problem
Oc SGS 1.2Ghz
nwsk said:
It depends a bit on your luck. Processors aren't all the same (variance in quality during manufacturing), the 1 ghz that is the default is considered a 'safe' level and every processor will be able to do that frequency. Usually though, there's a fair amount of buffer, so most processors can go beyond 1ghz to say 1.2 without any issue.
As the frequency increases, stability decreases. This means your phone will become more prone to crashing. Some people are lucky and can go very high (1.5, 1.7?), while others might start facing instability at 1.2. Won't know until you try. It's unlikely to cause permanent damage anyway, just change back to 1.0 if it's unstable
It probably does increase wear and tear of processor somewhat, but considering people will buy a new phone within 1-2 years, there's really no problem
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I Have "[email protected]" Kernel Up to 1.3Ghz, I Don't face any problems When i OC to 1.2GHz,, Games run smooth (Real racing 2) And the phone is Very responsive,, But when i play about 2 Hours My phone's temperatur increase (Just a Little Bit) but i don't know if it may Effect my Phone's Life,,
Shadow Life said:
I Have "[email protected]" Kernel Up to 1.3Ghz, I Don't face any problems When i OC to 1.2GHz,, Games run smooth (Real racing 2) And the phone is Very responsive,, But when i play about 2 Hours My phone's temperatur increase (Just a Little Bit) but i don't know if it may Effect my Phone's Life,,
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Being electronics' worst enemy, heat can and will kill your phone. But that's only if it reaches those temperatures. Overclocking your phone naturally will increase heat from the processor. Check your phones temperature. If you're reaching 50C or over, you're getting too hot. The general rule of thumb is this: if it's uncomfortable to the touch, your phone is too hot.
Most phones should get to 1.2 GHz without a problem. Keep in mind that LiveOC is NOT THE SAME as adding another frequency step, which was the traditional way of overclocking. Some kernels do one, some do the other, and some do both. Adding an additional frequency step to get to 1.2 GHz should be capable by most if not all phones. LiveOCing to 1.2 GHz won't be nearly as compatible, as it overclocks the bus, GPU and CPU.
upichie said:
Being electronics' worst enemy, heat can and will kill your phone. But that's only if it reaches those temperatures. Overclocking your phone naturally will increase heat from the processor. Check your phones temperature. If you're reaching 50C or over, you're getting too hot. The general rule of thumb is this: if it's uncomfortable to the touch, your phone is too hot.
Most phones should get to 1.2 GHz without a problem. Keep in mind that LiveOC is NOT THE SAME as adding another frequency step, which was the traditional way of overclocking. Some kernels do one, some do the other, and some do both. Adding an additional frequency step to get to 1.2 GHz should be capable by most if not all phones. LiveOCing to 1.2 GHz won't be nearly as compatible, as it overclocks the bus, GPU and CPU.
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+1
Whilst I am far from disappointed with the Samsung Galaxy Note's performance, it is hard to not feel slightly jealous (despite the Note's superiority thanks to such a large and beautiful screen) of the S3's quad-core processing power. However, I have seen plenty of people on here have over-clocked their processors, which naturally makes the device run quicker.
So, how exactly does over-clocking work? I know that I first have to root my phone, but what then? Is it possible to do on the stock ICS ROM/Kernel? Also, how does it effect battery life and will my phone still deep sleep and work with "Power Saving Mode" like normal? Also, how much can you safely over-clock to and, for those of you have done it, how has the performance been?
Yeah, you nees to be rooted. And then it depends on the kernel. If it comeswith built in overclocking you can use any app like set cpu, sytem tuner pro... to adjust the maximum frequency and if the kernel allows it the voltage too (might needs to be raised to keep your phone stable when overclocked). If there is no native overclocking and/ or the possibility to adapt your cpus voltage you can still use tegrak which works also with kernels without nativ oc/ voltage control.
Word of caution: Don't raise the voltage too much or you will fry your cpu.
Sent from my Galaxy Note running ICS
The sluggishness of gui is not dramatically decreased with overclocking, its coding, not cpu issues. Just check your cpu frequency with cooltool, most of the time max cpu is not even reached, indicative it also doesnt solve it should you raise it by overclocking
I'd rather suggest cm9, aokp, if you dont mind warrantee, they will dratically incruise user experience on performance area
Sent from my GT-N7000 using Tapatalk 2
Hi,
I saw BravoMotolora's article about CPU binning, and I thought that it would be great if we compare CPU bin and voltages.
It will be great to know the relationship between voltage and PVS number.
Please follow this procedure
1. Install a custom kernel that lets you do undervolt, e.g. franco.Kernel
2. Do what BravoMotolora said
3. Undervolt your N5 by 25MV
4. Run Antutu
Then, you might see your N5 rebooting or giving you a Antutu score.
If you get the score, go and try the procedure again
I got to -50MV with PVS1 N5.
Please post your results(undervolt that you did and your N5's PVS) here!
Can you not do this?
Do not do what? I mean most of guys here will do undervolt to save battery anyway so won't it be good to share some intel?
Sent from my Nexus 5 using XDA Premium HD app
I'm the same as OP... I have PVS 1 and the max I can UV is -50mV.
you do realize that many custom kernels set their voltages different than default/stock, and differ among themselves? for example, if you go -50mV less on using franco kernel, and go -50mV less using trinity kernel, it means nothing because their voltages differ to begin with. i mean you cant really compare each others voltages that way. you would need to write your voltages in real numbers, and cpu speed steps.
I honestly never saw a huge benefit in undervolting. It can also cause errors which lead to worse battery life.
Sent from my AOSP on HammerHead using XDA Premium 4 mobile app
johndrmr said:
I honestly never saw a huge benefit in undervolting. It can also cause errors which lead to worse battery life.
Sent from my AOSP on HammerHead using XDA Premium 4 mobile app
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agreed. i personally do better with underclocking, than with undervolting.
simms22 said:
agreed. i personally do better with underclocking, than with undervolting.
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it's a lot easier to underclock 20% than to undervolt 10%, which approx. gives you the same active power savings. It's a lot safer too, if you don't have a spec sheet for the CPU handy.
underclocking does nothing to idle power (or leakage power) though
This phone does pretty well arlt idle I think. Can't imagine you would see much gain from UV.
Sent from my AOSP on HammerHead using XDA Premium 4 mobile app
klin1344 said:
I'm the same as OP... I have PVS 1 and the max I can UV is -50mV.
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I have a PVS 2 and can undervotl -75mV accross the board and -87.5mV at 300Mhz.
So 2,26Ghz I can run at 0.975 Volt.
CM11 with Bricked Kernel.
Together with Sync off, Google hotword off and optimized automatic brightness I get constantly 5 - 5,5 hours screen on time with websurfing, mail and music stream.
Marcel
menting said:
it's a lot easier to underclock 20% than to undervolt 10%, which approx. gives you the same active power savings. It's a lot safer too, if you don't have a spec sheet for the CPU handy.
underclocking does nothing to idle power (or leakage power) though
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Underclocking drops the performance of the phone, as the peak performance is not available when needed. Undervolting on the other hand gives you battery savings without affecting peak performance at all. If done too aggressively, it can make the phone unstable, but there is never any danger of hardware damage. The instability will at most cause errors, random reboot, or a freeze up. If this happens, you know you've pushed too far under, and you can bump voltage closer to stock after booting the phone back up. If running stably, undervolting is actually marginally better for your phone hardware than stock voltage because you are wasting less of the energy in heating up the chips and damaging them.
rajendra82 said:
Underclocking drops the performance of the phone, as the peak performance is not available when needed. Undervolting on the other hand gives you battery savings without affecting peak performance at all. If done too aggressively, it can make the phone unstable, but there is never any danger of hardware damage. The instability will at most cause errors, random reboot, or a freeze up. If this happens, you know you've pushed too far under, and you can bump voltage closer to stock after booting the phone back up. If running stably, undervolting is actually marginally better for your phone hardware than stock voltage because you are wasting less of the energy in heating up the chips and damaging them.
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i underclock, sometimes to 1036mhz max, with all 4 cores always on by default(no hotplugging). sure, in a benchmark itll score less, just like i expect to score more when im overclocked. but to the normal user, they would never be able to tell that my phone is only clocked to 1036mhz. meaning the user experience isnt lowered in any way. even intense gpu oriented games dont show that im running underclocked. so when you say it drops the performance, it isnt entirely accurate.
simms22 said:
i underclock, sometimes to 1036mhz max, with all 4 cores always on by default(no hotplugging). sure, in a benchmark itll score less, just like i expect to score more when im overclocked. but to the normal user, they would never be able to tell that my phone is only clocked to 1036mhz. meaning the user experience isnt lowered in any way. even intense gpu oriented games dont show that im running underclocked. so when you say it drops the performance, it isnt entirely accurate.
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Sorry, but CPU underclocking means always a drop in CPU performance.
When you compensate this drop in your case by always having all four cores active you produce more heat with the active cores.
(and I estimate it will produce more heat/battery depletion than the original phone settings. (max 2,26Ghz and variable core usage)
When you argue that in general a normal user is not realizing a drop in performance due to underclocking...fine.
But it will always be a drop in performance.
Undervolting in opposite to underclocking produces no drop in performance but actually a rise in efficiency. (and thats what CPU/GPU development is all about).
Less heat, less battery depletion, same performance.
Why not taking advantage of that by undervolting?
Its free lunch.
simms22 said:
i underclock, sometimes to 1036mhz max, with all 4 cores always on by default(no hotplugging). sure, in a benchmark itll score less, just like i expect to score more when im overclocked. but to the normal user, they would never be able to tell that my phone is only clocked to 1036mhz. meaning the user experience isnt lowered in any way. even intense gpu oriented games dont show that im running underclocked. so when you say it drops the performance, it isnt entirely accurate.
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I agree with you here. 1036 mhz is a great CPU speed for running the device and most apps. Most games UC the CPU for better battery temp like in PPSSPP. Less temperature throttle and more stable frames per second.
Benchmarks are a difference story though but who cares about those. UC is lag free, and buttery smooth so why not?
Sent from my Nexus 5 using Tapatalk
zz_marcello said:
Sorry, but CPU underclocking means always a drop in CPU performance.
When you compensate this drop in your case by always having all four cores active you produce more heat with the active cores.
(and I estimate it will produce more heat/battery depletion than the original phone settings. (max 2,26Ghz and variable core usage)
When you argue that in general a normal user is not realizing a drop in performance due to underclocking...fine.
But it will always be a drop in performance.
Undervolting in opposite to underclocking produces no drop in performance but actually a rise in efficiency. (and thats what CPU/GPU development is all about).
Less heat, less battery depletion, same performance.
Why not taking advantage of that by undervolting?
Its free lunch.
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again, sure, if youre benchmarking the performance will drop, yes. but if its something that the user doesnt see or feel, then its irrelevant.
no extra heat is produced. also, i get 5.5-7h screen on time with very heavy use. granted, i use the browser much more than i game, but thats what i use my device for mostly.
when needing the extra performance, or wanting to, i overclock. everybody uses their device differently, has differing needs. i would never say one way is better or worse than the other way.
simms22 said:
again, sure, if youre benchmarking the performance will drop, yes. but if its something that the user doesnt see or feel, then its irrelevant.
no extra heat is produced. also, i get 5.5-7h screen on time with very heavy use. granted, i use the browser much more than i game, but thats what i use my device for mostly.
when needing the extra performance, or wanting to, i overclock. everybody uses their device differently, has differing needs. i would never say one way is better or worse than the other way.
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You can do everything you are already doing, but also undervolt, and your battery life will increase, without affecting your performance. Your performance will be different than my performance (because I don't underclock), however imperceptible as it may be. So undervolting is still better than not undervolting, even for you.
Using EX kernel 3.27, underclocked to 1.5Ghz, undervolted to "700 min" and using "stock" thermal throttling setting. Rock solid and it barely even gets warm now. Responsiveness and performance is only a touch worse than stock; the only places I really notice any performance reduction is in intensive games and app install times. Battery life is massively improved.
This is an outdated device, but since SD801 is so efficient, I gave it a try.
Warning - undervolting is a risky process. It may constantly crash your device, make it unusable or you can actually lose all of your data. Be aware.
So, after reading various articles about CPU binning concept, I thoroughly examined my device's potential. Note, that every device is different, regarding CPU quality and etc.
Anyways, I am running stock rom with Boeffla kernel. I actually gave up, when my device was getting hot - I don't like that at all. Since thermal throttling is really aggresive, I wanted to get away from that completely. And I did.
Currently my phone is heavily undervolted (by 0.1V to be exact) and to be honest, CPU temperatures now never ever exceed 50ºC. With stock voltages, I could easily reach 80ºC.
Anybody else tried doing undervolting? Share your experiences. I would greatly appreciate that.
what is the benefit of it?
does it give a better battery life............?
binadam23 said:
what is the benefit of it?
does it give a better battery life............?
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The only real benefit of undervolting is to reduce temps. Even so it isn't recommended because of the risk of instabilities.
Saber.
Saber said:
The only real benefit of undervolting is to reduce temps. Even so it isn't recommended because of the risk of instabilities.
Saber.
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lower temperature = lower power consumption = better battery life.
Kriomag said:
lower temperature = lower power consumption = better battery life.
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Not necessarily. In my experience in kernels, undervolting only brings marginal power savings. Most battery drain is from open apps and from the display.
Saber.
Wake locks play a big role too I always turn off as may features as I can on my s5 verizon and settings database editor App to turn off more features than normally possible
Sent from my iPhone using Tapatalk
Saber said:
Not necessarily. In my experience in kernels, undervolting only brings marginal power savings. Most battery drain is from open apps and from the display.
Saber.
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Not exactly marginal from my experience. It also depends on which frequency CPU is running. At higher clocks, lower power consumption is more noticeable than on lower frequencies.
airidosas252 said:
Not exactly marginal from my experience. It also depends on which frequency CPU is running. At higher clocks, lower power consumption is more noticeable than on lower frequencies.
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Well, that's not quite the same as what I was saying.
Different CPU frequencies use different current levels which will affect the power draw. So in this case, it will affect the battery savings. Whereas undervolting alone doesn't bring much of a difference due to the already efficient design of our SOC (well, at least in my case ).
Saber.
Undervolting -> Lower Temp -> Less Throttling -> Better Performance with slightly better battery life.
Sent from my SM-G900F using XDA Labs
Throttling is really noticeable with stock voltages. Play some games for a while and you'll start to feel that phone is getting slower and hotter. Not the case anymore after undervolting. If your phone can handle upto 0.1V undervolt, then your SOC is in good shape.
Wlld1 said:
Undervolting -> Lower Temp -> Less Throttling -> Better Performance with slightly better battery life.
Sent from my SM-G900F using XDA Labs
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i can confirm this, i feel my phone is really snappy now and slightly worm, not hot anymore
I use 300-2000Mhz and heavy UV 620-850V. I also use "use_spi_crc=0".
After phone reboot on stock i get 80'C (cpu tem module in xposed) and on my settings it is not reaching 60'C
What about battery life? it needs long testing, i can assume that its slightly better because less energy is converted in to heat
There seems to be some misconception on undervolting.
In theory undervolting should translate to better battery life. However....
Real world results tell a different story as it shouldn't really make much difference at all. For example, not all S5 phones run the same voltage tables (different CPU quality require more/less voltage), yet they achieve the same battery life. So what voltage was set by the manufacturer (Samsung) is already the optimum voltage.
You will definitely achieve better thermals after undervolting, but in the custom kernel world, most kernel developers will not be able to provide help in the case of instabilities. Some kernel developers may not even provide undervolting support because there just isn't a great enough benefit other than improving thermals.
Saber.
What about undervolting Busses, Image processing System, MMC Memory, GPU and CPU?
I`ve got the exynos variant of the S5. I undervolted to -85 all of that stuff and the phone now doesn't heat at all and battery life isn't that amazing but it is noticeably better
Rudy1967 said:
What about undervolting Busses, Image processing System, MMC Memory, GPU and CPU?
I`ve got the exynos variant of the S5. I undervolted to -85 all of that stuff and the phone now doesn't heat at all and battery life isn't that amazing but it is noticeably better
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I'm using the snapdragon variant with boeffla kernel so only the CPU is allowed to be undervolted.
Undervolting other components alongside the CPU will make a more noticeable difference in terms of battery savings. It still isn't recommended by many kernel devs as these other components are more sensitive to slight voltage changes (including the bus).
Saber.
Saber said:
I'm using the snapdragon variant with boeffla kernel so only the CPU is allowed to be undervolted.
Undervolting other components alongside the CPU will make a more noticeable difference in terms of battery savings. It still isn't recommended by many kernel devs as these other components are more sensitive to slight voltage changes (including the bus).
Saber.
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Yeah it actually makes a slight difference in battery life, But I don't think anyone should go below these values since I started to get Screen of death and all that kinda stuff that happens when phones are very undervolted haha
If there's a kernel that allows users of Snapdragon phones to undervolt that hardware, I really recommend you to do it, it really helps battery's performance if you need that extra hour of Screen On time
Now, all of this changes are not recommended cause there could be problems with your phones if you're not sure bout the parameters you're playing with.
does anybody else have problem with gpu oc ? no matter what settings i use there is no performance increase at all, its like the 600Mhz is permanent even when all monitoring programs show 700-800Mhz :/ I have tested gpu many times using 3dmark - always the same fps (600-800Mhz). With 200Mhz increase in frequency it should be significant increase in fps!