Okay, so I just got my replacement vibrant and am about to reflash dragon kernel 3.1 oc version. Will the overclocking shorten cpu life, as I plan to use my phone for 2-3 years? Also, will increasing the voltage to the cpu just hasten the cpu wear?
EDIT: LOL. I spelled impact wrong. Stupid swype dictionary.
yes, overclocking will shorten the lifespan of a cpu without question, but it all depends on the cpu itself. I overclock my AMD chips all the time, but when the Chip will last 10 years, why not overclock since you don't plan on using it for longer than 5-8 years anyway. Now, I'm not sure how hardy these hummingbird chips are, but I do know that the chipset they are based off of were originally developed with capabilities of 2ghz.
This causes 2 issues in a cell phone tho, not enough space for heat dissipation and it eats batteries like my wife eats chocolate cake! So, if you OC plan to see your battery life drop like crazy. 1ghz is pretty powerful, I don't really see a need for more power on your cell phone, but I don't see a reason why you shouldn't either
Not all chips can handle overclocking as well as the next. They are all kinda individualistic. Remember, I'm not saying "yeah dude, OC your phone! it will be so powerful it can do your laundry for you and even get you a beer from the fridge"... nooooo, so if your phone turns into a vibrick don't go...."oh, darksurf said OCing your phone was OK and that my phone wouldn't catch fire".
^^^^^^^^^^^^^^
just a disclaimer
I think your phone could handle a small OC and still live to be 2 years old just fine. Its up to you to void the warranty...
Has it ever been heard of that someone killed their gs2 from using 1600mhz in daily use?
My gs2 likes to have 1475 as a minimum voltage for 1600.
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Ever rev an engine into the red? Did the engine blow up on the spot? unlikely. However if you constantly KEEP the engine in the red it will eventually break down.
Same thing for OC phones. The processor in the SGS was designed for somewhere around the 1ghz mark. Pushing it 110% likely wont kill it, they build allowances and tolerances into these things to help them last longer. Push that processor to 150% and you are risking serious damage.
Monitor the heat, if you notice its getting HOT then you should really pull the battery and let it sit for a while. Nobody here can say its safe to OC your phone like that, its a calculated risk you obviously didnt spend a lot of thought into.
TLDR: Just because you CAN doesn't mean you SHOULD.
Actually its my thought the reason I haven't been using it on 1.6 yet, and why I'm asking. Iv been ocing my pcs since the late 90s
Now the reason I'm asking here is because the cortex a9 was designed for up to 2gHz operation, but this phones design may or may not provide adequate cooling, that's why I'm asking if other people have any negative experiences with this.
Were not actually over reving the chip its more of a environment issue with cooling/ventilation.
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Visentinel said:
Actually its my thought the reason I haven't been using it on 1.6 yet, and why I'm asking. Iv been ocing my pcs since the late 90s
Now the reason I'm asking here is because the cortex a9 was designed for up to 2gHz operation, but this phones design may or may not provide adequate cooling, that's why I'm asking if other people have any negative experiences with this.
Were not actually over reving the chip its more of a environment issue with cooling/ventilation.
sent from I9100 using Omega
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You do have to have in mind that PCs are much safer to OC, so we shouldn't really compare brtween them.
Regarding the Phone OC, I haven't OC'd mine and probably never will because I have all the horsepower I need, but I think the "safest" OC is between 1.3 and 1.4GHz, since that's a range that all CPUs are designed to overtake (max 200MHz range ).
mine's been oc'ed, uv'ed pretty much within the week I bought the phone in june.
I've got it set to clock between 500-1600Mhz on demand and I've not had a problem yet. Mind you, not many tasks you do on the phone will actually require 1600Mhz and my phone's CPU clocks mostly between 500-800Mhz.
Playing some games or doing quick video conversion will push to 1600Mhz but I rarely play games on my phone and video conversion is short process - burst of 90 seconds to 120 seconds at most. So I think you should be alright so long as you don't leave your phone CPU at 1600Mhz at all times.
Like you said, it is the cooling and ventilation system on the phone, which you can't modify.. Unlike PCs, where you can install bigger fans or water cooling systems. So if the phone isn't constantly cooking itself inside, should be alright.
You should already know that OCing anything is dangerous since you overclock PCs,so I'll skip that part.
Well,if it's dangerous for the phone...It depends.Yes,the processor will die sooner.Yes,you risk frying your device.No,you don't have to push it to the limit(don't push it more that 1450μV,that's the general advice for 45nm chips).However,my thoughts are:
-I won't still have the device when it's time for its CPU to get fried,so I don't actually care.
-Something else,probably the Amoled screen,will make the phone useless by breaking sooner than the CPU will.
-This winter here is really cold(for our standards anyway),so heating has been taken care of.During hotter weather,I kept multiple temperature profiles in SetCPU,so that frequencies get lower as temperatures get higher.
In the end,what matters most to me is to have the experience I want.And with OCing my phone I get it.I'm happy with it,that's all I wanted.So,it's personal preference.Some feel they don't need it,others feel they do.Decide for yourself,that's the best advice.
PS:In case you are using Siyah kernel or CF-Root with Tegrak overclock,try lowering your clock by small steps(8Mhz is the smallest step) for a sane voltage,say 1400μV.Sometimes small increments make big differences.
Thanks for the advice guys. Appreciated.
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Don´t oc sgs2.
I got my mobo fried without oc.
Service center replaced everything else but housing and screen.
I used it 2-3 hours in a row, installed programs and put it in charger.
In the morning, it was completely dead.
Overheated because of the use and charging.
So think about twice before using oc 24/7.
Buffalee said:
Don´t oc sgs2.
I got my mobo fried without oc.
Service center replaced everything else but housing and screen.
I used it 2-3 hours in a row, installed programs and put it in charger.
In the morning, it was completely dead.
Overheated because of the use and charging.
So think about twice before using oc 24/7.
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how can you tell, that its dead because of the use and charging, if you didn't even OC'ed?
Buffalee said:
Don´t oc sgs2.
I got my mobo fried without oc.
Service center replaced everything else but housing and screen.
I used it 2-3 hours in a row, installed programs and put it in charger.
In the morning, it was completely dead.
Overheated because of the use and charging.
So think about twice before using oc 24/7.
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Click to collapse
I bet you didn't know there are faulty products out there that show their faults during intensive usage,eh?Mine's running at 1.6GHz(give or take a few MHz ) for months.I've played games while charging countless times.And my phone is still here,intact,so that I can write this here.
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Of course my sgs mobo could have been faulty.
When the mobo fried it was hot, i mean hot.
I didn´t look temperatures.
It didn´t wake up even using jig.
I sended it to service.
If they had succesfully woke it up, they wouldn´t fix it on warranty (rooted).
Normally oc would be fine because it´s using powersave and underclock it.
But if you play like 2 hours on 1,6Ghz it can get too hot (over 60c on cpu).
I can´t recommend that kind of temperature.
And nobody here knows what kind of vrm´s phone has.
Also cooling plates are not designed for massive oc/voltage.
Of course temperature depends on voltage more than the clock speeds.
It´s up to user if he want to use it that kind of voltages/speeds.
I would´t use it 1600Mhz/24/7.
Generally i know what i´m talking about (using water on pc...)
Just look for temperatures and don´t give too much voltage (as low as possible).
Of course you don´t know safe voltage limits, but try and look what other have been using.
Don´t oc much if you don´t know what are you doing.
@tolis626 Hi, I have oc'd to 1.4ghz for the last few weeks, and I have under volted it to 12.75mV, the same as you, have you had any problems at that voltage? Also, is your 1200mhz voltage stable as it seems very low, to say that it was, at stock, 13mV. Furthermore, have you ever tried to under volt 1600mhz please?
Buffalee said:
Of course my sgs mobo could have been faulty.
When the mobo fried it was hot, i mean hot.
I didn´t look temperatures.
It didn´t wake up even using jig.
I sended it to service.
If they had succesfully woke it up, they wouldn´t fix it on warranty (rooted).
Normally oc would be fine because it´s using powersave and underclock it.
But if you play like 2 hours on 1,6Ghz it can get too hot (over 60c on cpu).
I can´t recommend that kind of temperature.
And nobody here knows what kind of vrm´s phone has.
Also cooling plates are not designed for massive oc/voltage.
Of course temperature depends on voltage more than the clock speeds.
It´s up to user if he want to use it that kind of voltages/speeds.
I would´t use it 1600Mhz/24/7.
Generally i know what i´m talking about (using water on pc...)
Just look for temperatures and don´t give too much voltage (as low as possible).
Of course you don´t know safe voltage limits, but try and look what other have been using.
Don´t oc much if you don´t know what are you doing.
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I know what I'm doing.I know the risks,that's why I don't encourage anyone to overclock as much as I do.I carefully monitor temperatures and voltages over long time periods.Rest assured,I won't come back here crying.
danielsf said:
@tolis626 Hi, I have oc'd to 1.4ghz for the last few weeks, and I have under volted it to 12.75mV, the same as you, have you had any problems at that voltage? Also, is your 1200mhz voltage stable as it seems very low, to say that it was, at stock, 13mV. Furthermore, have you ever tried to under volt 1600mhz please?
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Well,since 1400MHz and 1600MHz aren't stock clocks,you don't actually undervolt them.You rather choose a voltage for them as there isn't a standard one.
My phone is stable with the voltages in my sig(I've only changed 200Mhz and 500MHz voltages a little but too bored to update my sig ) for months,so yeah,I'd say I don't have any problems.This doesn't mean that no one will.Your phone might need 1325μV or 1225μV for 1400MHz.Every phone's CPU is unique in its own way.
@tolis626 Thanks very much, one more stupid question please, will under volting from stock Samsung voltages, even if it's stable, decrease performance compared to stock voltages on an average exynos processor please, aslo will undervolting from original kernel clock speed increase the processors life span? I have researching this and came up with nothing.
Will it break your phone? Not directly. It will shorten the lifetime.
Besides that the heat can indirectly kill your device.
I'm just curious:
Why overclocking the device? I have mine underclocked to 1 GHz max. It still has enough power to handle everything.
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I have just been messing around. I can get 1.6ghz perfectly stable at 1350mv, I tried 1325mv and it hung up after about 2 min of use. I can also get my 1.4ghz down to 1225mv's and 1.2ghz to 1.200 it is rock stable and I haven't tried lower voltages on 1.4 & 1.2.
I am going to keep [email protected] & 1.4 @ 1250mv & [email protected]
danielsf said:
@tolis626 Thanks very much, one more stupid question please, will under volting from stock Samsung voltages, even if it's stable, decrease performance compared to stock voltages on an average exynos processor please, aslo will undervolting from original kernel clock speed increase the processors life span? I have researching this and came up with nothing.
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No,undervolting will in fact prolong your processor's lifetime,albeit negligibly,because with less voltage less heat is generated.It's plain physics.
Overclocking on the other hand will reduce your CPU's lifetime.The damage(mostly electromigration) is dependent on the CPU and how much you overclock.Quite frankly again,you won't still have the phone when enough damage is done for it to break.If the slightly lower battery life doesn't bother you that much,I say go for it.
danielsf said:
I have just been messing around. I can get 1.6ghz perfectly stable at 1350mv, I tried 1325mv and it hung up after about 2 min of use. I can also get my 1.4ghz down to 1225mv's and 1.2ghz to 1.200 it is rock stable and I haven't tried lower voltages on 1.4 & 1.2.
I am going to keep [email protected] & 1.4 @ 1250mv & [email protected]
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Dude,that's some nice UV!Mine instantly crashes when I set it to 1375μV at 1600MHz.You're lucky.
Oh and,most probably your phone can handle 1200MHz at 1150μV.
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tolis626 said:
No,undervolting will in fact prolong your processor's lifetime,albeit negligibly,because with less voltage less heat is generated.It's plain physics.
Overclocking on the other hand will reduce your CPU's lifetime.The damage(mostly electromigration) is dependent on the CPU and how much you overclock.Quite frankly again,you won't still have the phone when enough damage is done for it to break.If the slightly lower battery life doesn't bother you that much,I say go for it.
Dude,that's some nice UV!Mine instantly crashes when I set it to 1375μV at 1600MHz.You're lucky.
Oh and,most probably your phone can handle 1200MHz at 1150μV.
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Thank you very much for all your help I tried undervolting 1200mhz more, I got to 1075mv and it was rock stable, I don't think I am going to try anything lower than that. Just for info, I'm on SiyahKernel v2.6.2 Thanks again
CPUs care a lot about voltage and don't give a rip about MHz except for the minor heat increase. The chip in my phone is a bad clocker though. If I could get 1400mhz to work at close to the stock 1200mhz voltage I would do it in a heartbeat. Sadly mine requires a healthy bump so I abstain. At least until I can afford to replace it
Number one rule of overclocking, don't push the voltage if you can't afford to replace it
I discussed the topic of overclocking processors with a friend of mine who design cellphone CPUs. He told me that over the lifetime of a CPU, the insulating oxide layers break down. This process is considerably faster at 40% extra power and frequency. So don't expect it to last as long as a normally clocked CPU. So the question is how long it would normally last.
what's the differnce btw. OC vs non OC ? thanks
http://bit.ly/N53rQc
Overclocking is to increase your processors clock speed. The processor comes with a fixed clock speed which is mentioned in it's specs (1 GHz, 1.5GHz etc). OCing is to increase this speed past the fixed or 'stock' value to achieve better performance from the phone. Generally, if a phone has a fast enough processor out of the box, you won't notice much of a difference OCing. The main performance gain will be seen in benchmark tests. But if you have a slow processor, it'll make a difference to usability. Since more processing power = more electrical power, it causes greater battery drain and also reduces the life of the processor in the long run, because it heats up more and there's no cooling apparatus in a phone unlike a computer. A little OCing is fine, but overdoing it continuously will damage your processor. My phone is rated for 1 GHz but OCed to 1.15 GHz. It can go uptown 2 GHz max, but like I said, not good. OCing depends on the kernel of the phone. Stock kernels do not support it, but almost every custom kernel supports it. A non OCed device is one which is running at the stock frequency designated for it.
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with OC, ur processor xtra hard working. ur hh rapidly heat, battery drain faster...
so don't do it if u only using hh for simple app (except u want play HD's Games)
sorry for my bad english...
First off is this a good idea? can such small devices be over clocked in a safe way without risking damaging the hardware?
if yes which would you say was the best app for doing so?
Hi,
A good idea... maybe, maybe not... it depends on what you want... higher scores in bench?A shorter battery life?A very very hot device while browsing or gaming (if you run at 1.8Ghz for example)?A little extra power for some apps/games?
With overclocking a little (1.5/1.6Ghz) I noticied that some apps open a little faster and the genera UI is a little more responsive...
There is always a (little) risk to overclock our phones, generally due to overheat but also some CPU's can't handle high overclock.
For me I don't remember reading someone burn her CPU with overclocking but...
There are still some software protections before to burn a CPU (thermal throttling, CPU temp limit before shutdown, etc...).
Obiously the duration of life could be reduced mainly if you always run at 1.8Ghz with playing games... So the "safe" way would be no overclock or a little overclock like 1.5Ghz... For you to test and decide...
For the apps: SetCpu, System Tuner... there is a bunch on the Play Store.Just for the CPU settings I would say SetCpu.
For me i will never overclock my cpu. Just install siyah kernel and it's pretty smooth in games. Overclocking will damage your cpu and maybe loose some of the performance.
I can't see the need on this device, I might experiment with uv, maybe even underclocking, but as above, super smooth on siyah, and Slim Rom
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Talking about battery life i installed darkys rom 3 onto my i9300 and the battery life is already suffering a loss of maybe around 25%. In saying that over clocking will only cause me to lose even more so ill leave it for now
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I'm too running on slim ics and siyah kernel. Best battery life and performance!
GGSunny12 said:
For me i will never overclock my cpu. Just install siyah kernel and it's pretty smooth in games. Overclocking will damage your cpu and maybe loose some of the performance.
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Overclocking won't damage your CPU unless you set crazy voltages, or let it overheat. Also, it won't lose performance... that's crazy talk. Only if it overheats will it throttle, but that only happens on large clock rates like 1.8GHz or if you're in a hot environment.
I had my old LG GT540 overclocked with no heat problems mind that was only a 600mhz cpu, had it up to 825mhz.
But we already have a powerful cpu in this phone, foe now I don't see the need to overclock.
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The best app depends a lot on your kernel and device. For example, for my Galaxy S2 the best OC was with TegraK Overclock.
With my Xoom CPU Tuner is still the best.
With the S3 I suppose CPU tuner would be alright as well, but I haven't had the urge to OC it, because I find SiyahKernel still quite unstable in the S3.
You need an overclockable kernel in order to OC your phone.
As for damages, it is hard to tell if they are permanent, but picture this: your battery will have to be recharged more often, because it will drain faster. Since batteries have a limited lifespan which depends on how many charge cycles they go through, the more often you discharge/charge them, the shorter their lifespan will be.
Also, there is no telling what kind of ill-effects the added heat can do to the phone. It may be totally harmless, but it may also affect the quality of the display, since the added heat will be right underneath the screen.
The lifespan of the CPU will be shortened: instead of being able to work well for 20 years, it will work well for 18, 17, 15, but more than enough time for us to already have replaced our S3 for organic, intradermal smartphones!