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So I am in fact running the 900mhz kernel right now, and the CM6 kernel on my Droid is running at around 1ghz with lowered voltages (hand tuned). I can't help but wonder, however, if doing so is safe for the future of the device? The manufacturer obviously knew what voltages and frequencies were most stable and safe for the longevity of the processor--and they likely spent a long time, with expert developers, working on getting the most speed and battery life out of the processor.
Who are we to suddenly decide that it can run faster and on lower voltages? No offense to the hard work put into the screamer kernel, as I am using it myself, but ever since the slow and painful decay of my Nvidia 8600GTS due to lowered voltages from the PSU over time, I've felt iffy about doing the same to devices that lack any cooling mechanisms.
So I'm curious: What risks do we incur by running an overclocked kernel? How can we detect the onset of long-term damage?
The main risk is damage to the CPU(electromigration if overvolting), but its hit or miss, depending on the quality of your particular chip. Undervolting can help minimize electromigration.
In general, overclocking will shorten the life of the unit - but by how much is difficult to say. I had a desktop PC that I ran overclocked for over 8 years with no problems and its still works today - a lesser chip might have been damaged in a year or less. If your CPU is marginal to begin with, it could fail in a short amount of time - days or weeks.
There really isn't any way to tell if its being damaged until its too late, but heat is a good indicator. If your unit feels excessively warm, then its life is probably being reduced - but it may be reduced from 20 years to 10, or from 10 years to 5 by which time the unit is obsolete anyway.
A close examination of the manufacturers data sheet would be in order to get a better idea of the life expectancy of the chip with the MTBF(Mean Time Before Failure) parameter in particular. Thats if this information is even available - some manufacturers do not publish it.
Like Jack - i have overclocked for years. I will say this. I have had Intel, Via, and AMD cpus, and not one has EVER failed from overclocking (and i took an AMD opteron from 1.8 to 2.8Ghz, for 3 years straight).
Honestly, the only real world risk you face, is if you run a CPU beyond its overclock limits. If your system (any system in general) is unstable, and you dont adjust it, you risk damage. Otherwise, you are fine.
vapor63 said:
So I am in fact running the 900mhz kernel right now, and the CM6 kernel on my Droid is running at around 1ghz with lowered voltages (hand tuned). I can't help but wonder, however, if doing so is safe for the future of the device? The manufacturer obviously knew what voltages and frequencies were most stable and safe for the longevity of the processor--and they likely spent a long time, with expert developers, working on getting the most speed and battery life out of the processor.
Who are we to suddenly decide that it can run faster and on lower voltages? No offense to the hard work put into the screamer kernel, as I am using it myself, but ever since the slow and painful decay of my Nvidia 8600GTS due to lowered voltages from the PSU over time, I've felt iffy about doing the same to devices that lack any cooling mechanisms.
So I'm curious: What risks do we incur by running an overclocked kernel? How can we detect the onset of long-term damage?
Click to expand...
Click to collapse
Overclocking itself wont shorten the life at all. The extra heat is what can cause damage but I don't think you'll be anywhere near the edge of the thermal envelope as these nooks just don't get very hot. Over-volting will also shorten the life some, but I can tell you based on experience as a semiconductor reliability engineer that if your cpu dies due to a minor over volt or heat from overclocking that it was going to die anyway. Electromigration will take many years. What will kill it is heat/cool cycles, and an overvolt and/or overclock will make it hotter and increase the temperature delta on a given heat/cool cycle. All of these chips go through Burn in, which is a high temperature overvolted test to weed out infant mortality chips, so they've already seen a much higher stress cycle than can be done to them via firmware when installed in a nook.
No offense, but who cares, lol. If it lasts 2 years I will be happy. I havent kept a cell phone longer since my first nokia brick phone. Besides, I'm sure by that time it will be sereverly outdated and in need of replacing anyway.
JackOnan said:
The main risk is damage to the CPU(electromigration if overvolting), but its hit or miss, depending on the quality of your particular chip. Undervolting can help minimize electromigration.
In general, overclocking will shorten the life of the unit - but by how much is difficult to say. I had a desktop PC that I ran overclocked for over 8 years with no problems and its still works today - a lesser chip might have been damaged in a year or less. If your CPU is marginal to begin with, it could fail in a short amount of time - days or weeks.
There really isn't any way to tell if its being damaged until its too late, but heat is a good indicator. If your unit feels excessively warm, then its life is probably being reduced - but it may be reduced from 20 years to 10, or from 10 years to 5 by which time the unit is obsolete anyway.
A close examination of the manufacturers data sheet would be in order to get a better idea of the life expectancy of the chip with the MTBF(Mean Time Before Failure) parameter in particular. Thats if this information is even available - some manufacturers do not publish it.
Click to expand...
Click to collapse
Extra heat is generally what kills ICs faster when overclocking, which is why if you don't/can't/aren't able to undervolt you need good cooling... no choice with the NC though as it's got to be undervolted to OC as we've no idea at all what the thermal budget of that package is, but I'd imagine that they're probably right on the edge to begin with even at 800MHz.
Some of my prior tablet I could feel warming up in the summer, harder to tell now with winter but my gTablet seems to get a bit warm at times when stressed...
From my experience in many years of CPU overclocking in computers, overclocking does not generally cause damage. Upping the voltage, and in turn the temperatures as well, can definitely damage the unit.
If you run into issues simply from overclocking they will likely just be instability, but no damage is likely to become from it. That is unless you are upping the voltage.
There are certainly many variables as well, and no two systems will be exactly the same.
As far as make sure that it is safe, I wouldn't push it to far, and if you do, it will not be stable. Saying the B&N chose the best or most stable frequency is somewhat silly. Just like we know full well that AMD and Intel have massive overclocking headroom as well.
Overclocking should be fine. I've been doing this on PCs since 1995/96 era. Never had one fail on me. As long as their is proper cooling or voltages are not too high, there is no issue. The key is to increase the CPU multiplier when you can, as opposed to voltage... but the tolerance of the hardware is pretty good.
No need to worry.
As for the manufacturers, they do the same thing. The buy a vanilla processor and depending on what they need on the market, the bump the speed. This allows them to buy one chip instead of ordering many types...
nootered said:
From my experience in many years of CPU overclocking in computers, overclocking does not generally cause damage. Upping the voltage, and in turn the temperatures as well, can definitely damage the unit.
If you run into issues simply from overclocking they will likely just be instability, but no damage is likely to become from it. That is unless you are upping the voltage.
There are certainly many variables as well, and no two systems will be exactly the same.
As far as make sure that it is safe, I wouldn't push it to far, and if you do, it will not be stable. Saying the B&N chose the best or most stable frequency is somewhat silly. Just like we know full well that AMD and Intel have massive overclocking headroom as well.
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Click to collapse
No. The 3621 was just left at AFAICT the "as sold" max clock for that particular SoC, which is probably as much a means of product differentiation was using the SGX530 was instead of the 540...
My guess would be that it can probably perform in the same range as the 3630, but additionally it might have had lower thermal specs listed which would also need to be accounted... but you're probably OCing usually doesn't harm anything, but if you're worried I'd keep an eye on the temp sensor every once in a while... (Used to OC my Palm IIIx all of the time, actually underclocked it as well when I was using it for reading...)
I see that the stable 1GHz and 1.1GHz kernels slightly overvolt(to 3630 values) so it would run a bit warmer... doesn't seem to be a problem for anyone yet, but I wonder if anyone's OCing one where it's actually even remotely something like warm ATM...
My Galaxy S just died on me after 8 months. Coincidentally, I had just overclocked it to run at 1.2GHz and unvervolted it at about -50mV across, just a week before it died.
Would this have killed the phone? It died when charging and not when in use. I also noticed that the temp was kinda warm as well (not sure if this is the normal raised temp during charging).
For that matter, I'm also not sure if it was the processor that died or some other component on the board. There is no signs of life at all......
I did notice even before rooting, the operating temperatures can go as high as about 58degC and the phone would shutdown at times at this range. (temp obtained using a system monitoring app)
What is the usual operating temps for phones? Or should i ask, what is the max operaing temps for phones? Did I get a lemon to begin with?
Thanks
bobzdar said:
Overclocking itself wont shorten the life at all. The extra heat is what can cause damage but I don't think you'll be anywhere near the edge of the thermal envelope as these nooks just don't get very hot. Over-volting will also shorten the life some, but I can tell you based on experience as a semiconductor reliability engineer that if your cpu dies due to a minor over volt or heat from overclocking that it was going to die anyway. Electromigration will take many years. What will kill it is heat/cool cycles, and an overvolt and/or overclock will make it hotter and increase the temperature delta on a given heat/cool cycle. All of these chips go through Burn in, which is a high temperature overvolted test to weed out infant mortality chips, so they've already seen a much higher stress cycle than can be done to them via firmware when installed in a nook.
Click to expand...
Click to collapse
The concern with OCs is mainly a heat issue, but even then as long as you stay within the thermal limits of the chip, you'll be fine. I remember once finding my moms K6-2 heat sink so clogged with dust that the fan was doing nothing. The system crashed from time to time, but once I cleaned it out, it ran just fine again. Not the best recent example, but I do know that the A8 is designed to hit faster clocks than 800, so running at 900-925 isn't a big issue. Also, unless you do nothing but games, your A8 isn't running at 900 most of the time--it just goes there when itneeds the power, then drops to 300 or 600 (which really saves battery). If you like, there is a few decent monitoring apps/Widgets you can run that show speed and temp. Most of the time, I don't think the A8 even reaches 40C, which is just a hot day in the summer where I live.
I had to check, but one such app is called Temp+CPU V2. Its free in the Market.
bobzdar said:
All of these chips go through Burn in, which is a high temperature overvolted test to weed out infant mortality chips, so they've already seen a much higher stress cycle than can be done to them via firmware when installed in a nook.
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Click to collapse
Thanks for bringing this up. The OMAP processor in the Nook was run through a Burnin temperature of over 120C (~250F). The only temp sensor we've got on the Nook is for the battery, so we should assume a 10C - 20C delta between the battery temp and the processor temp. Therefore, if you see a battery temp of 100C - 110C (>200F), your processor is about to experience catastrophic failure.
It's very likely that setup (late mode) timing violations will cause your Nook to lock up or decode instructions incorrectly (causing force closes) well before your processor takes heat damage. The unfortunate circumstance is when the Nook locks up while its unattended, leading to vicious overheating; this has happened to me once. When I returned to the Nook after a night's sleep, it was locked up, and upon rebooting, the battery temperature was 120F. At that temperature it's the battery's lifetime you worry about, not the processor.
higher power, shorter battery life, timing violation
The power consumed by the NC is proportional to volt squared times the frequency. By overclocking, with mostly likely an increase in voltage, you will have to charge the battery more often, hence shorter battery life. (The number of recharge cycles in a LiIon battery is fixed.)
Another unknown is the timing requirements of the NC. Chips need a setup and hold time. At 800Mhz, all timing constraints were met. May not be the case at 1ghz or 1.1 ghz.
Having said this, I do overclock my PC but I don't overclock the NC (I don't want to recharge every day.)
http://www.youtube.com/watch?feature=player_embedded&v=koLJ4BU9tgc
Swedroids test
It throttles at 36 C and shuts down at 59 to 60 C.
They should increase the throttle to 45 C and when 45 C is reached make the throttle more aggressive would be a better solution.
What do you guys think?
taxas said:
http://www.youtube.com/watch?feature=player_embedded&v=koLJ4BU9tgc
Swedroids test
It throttles at 36 C and shuts down at 59 to 60 C.
They should increase the throttle to 45 C and when 45 C is reached make the throttle more aggressive would be a better solution.
What do you guys think?
Click to expand...
Click to collapse
If it gets to hot people get the yellowing... I would rather run cooler and not worry about it.
Is this throttling effecting real world usage or just benchmarks? Not being sarcastic, asking a question.
sent via xda premium with nexus 7 while waiting for my shiny new Nexus 4!
Richieboy67 said:
If it gets to hot people get the yellowing... I would rather run cooler and not worry about it.
Is this throttling effecting real world usage or just benchmarks? Not being sarcastic, asking a question.
sent via xda premium with nexus 7 while waiting for my shiny new Nexus 4!
Click to expand...
Click to collapse
Well i dont know, i dont care about benchmarks, just thought about informing what i found.
And increasing the throttle level and making it more aggressive later on was just my opinion.
I would like to see a comparison with the iPhone 5 and Galaxy S III on what temperatures they shut down.
taxas said:
http://www.youtube.com/watch?feature=player_embedded&v=koLJ4BU9tgc
Swedroids test
It throttles at 36 C and shuts down at 59 to 60 C.
They should increase the throttle to 45 C and when 45 C is reached make the throttle more aggressive would be a better solution.
What do you guys think?
Click to expand...
Click to collapse
I think that the video was pretty painful to watch! lol WHO on earth would run a phone to death like that?? Hope they have an extended warranty... For real though, I would like to see them bump up the throttling temp a lil but in the real world most users will NEVER experience something like that because that app is meant to run your phone into the ground! I hate that they even make benchmarking apps cause it makes me competitive but I have found that the N4 is FAST as hell so I don't need anything else to prove that to me... Good vid though for the info but lets all step back into reality...
I'm thinking the S4Pro is rated to a higher temperature, and the thermal shutdown is really more for battery health than processor health... Regardless, 11 minutes at 100% load with no real cooling system...
Does the Galaxy S3 also shut down at the same temperature?
12 minutes with the CPU pegged at 100% on all cores with no cooling is impressive, IMHO. Yes it clocked down to 1150MHz but that's plenty fine.
No real world task will come close to pushing the processor that far. I doubt even gaming will task the cores so much that the phone throttles them back.
A lot of modern laptops won't run 12 minutes of solid prime95 before clocking down. This c2d 2.8GHz laptop I'm typing on now will clock down to 800MHz after 15-20 minutes of prime95...but it doesn't throttle at all when doing real world stuff, even compiling or encoding etc.
shojus said:
I think that the video was pretty painful to watch! lol WHO on earth would run a phone to death like that?? Hope they have an extended warranty... For real though, I would like to see them bump up the throttling temp a lil but in the real world most users will NEVER experience something like that because that app is meant to run your phone into the ground! I hate that they even make benchmarking apps cause it makes me competitive but I have found that the N4 is FAST as hell so I don't need anything else to prove that to me... Good vid though for the info but lets all step back into reality...
Click to expand...
Click to collapse
In my opinion the throttle should engage at 43-45c because at 36c its idle temperatures when the phone i just on stand by.
Ok I fear that's a real problem. What if I want to play a graphic intensive game for a few hours? Expecially on a hot summer day?
Could the phone shut down?
Sent from my HTC Desire using xda app-developers app
So much for Qualcomm's butter test
In the video description you can find:
"The reason as to why we published this video is because we've never experienced temperatures reaching ~60 degrees C before, nor have we ever experienced a phone shutting itself down after just 12 minutes of continuous full load, nor have we ever experienced such aggressive thermal throttling. It pretty much throttles down instantaneously from 1.5GHz to 1.2 or 1.1GHz during heavy load.
All temperature readings are presented in Celcius.
The Nexus 4 seems to have some issues with heat development. At least if we are to believe our findings. There might of course be a possibility that our unit is faulty. We are however not alone according to the Google Android issue tracker: https://play.google.com/store/apps/details?id=com.into.stability&feature=.... A google search on the matter will also render lots of user reports concerning heat issues.
In comparison the quad core Galaxy S3 (3G) battery sensor reports ~41 degrees after 13 minutes of full load with the screen set to 100% brightness. It does however lower the CPU frequency to 800MHz at times, but mostly run at 1.4GHz. Our IR meter reports about ~34 degrees if we go ahead and measure the hottest spot on the back of the phone (area around the camera lens)."
For me, this is a no-go. I wouldn't buy a phone that shuts down after a few minutes of processor stress testing. Can somebody tell if the same happens with his N4?
St4hli said:
In the video description you can find:
"The reason as to why we published this video is because we've never experienced temperatures reaching ~60 degrees C before, nor have we ever experienced a phone shutting itself down after just 12 minutes of continuous full load, nor have we ever experienced such aggressive thermal throttling. It pretty much throttles down instantaneously from 1.5GHz to 1.2 or 1.1GHz during heavy load.
All temperature readings are presented in Celcius.
The Nexus 4 seems to have some issues with heat development. At least if we are to believe our findings. There might of course be a possibility that our unit is faulty. We are however not alone according to the Google Android issue tracker: https://play.google.com/store/apps/details?id=com.into.stability&feature=.... A google search on the matter will also render lots of user reports concerning heat issues.
In comparison the quad core Galaxy S3 (3G) battery sensor reports ~41 degrees after 13 minutes of full load with the screen set to 100% brightness. It does however lower the CPU frequency to 800MHz at times, but mostly run at 1.4GHz. Our IR meter reports about ~34 degrees if we go ahead and measure the hottest spot on the back of the phone (area around the camera lens)."
For me, this is a no-go. I wouldn't buy a phone that shuts down after a few minutes of processor stress testing. Can somebody tell if the same happens with his N4?
Click to expand...
Click to collapse
Thing is that if you search the web for this problem, you get a lot of hits about people have thermal issues. I hope it just is a defective unit but it seems it is not the case. The S4 pro seems to be generating to much heat and requires too much power. That's why it empty's the 2100 mha battery a bit faster compared to other devices.
Maybe the S4 pro is more suitable for tablets and not phones.
St4hli said:
Ok I fear that's a real problem. What if I want to play a graphic intensive game for a few hours? Expecially on a hot summer day?
Could the phone shut down?
Sent from my HTC Desire using xda app-developers app
Click to expand...
Click to collapse
Very few applications will use 4 cores. Hell, most don't even use 2 cores by default. So the chances of you maxing out all 4 cores in routine usage isn't very likely. The extra cores typically benefit smartphones when one process is utilizing a core already, a different process just gets thrown over to a different core so it doesn't have to wait for CPU cycles. Most smartphone use is "burst-y" so this helps end-users out quite a bit.
99.9 % its not the S4 Pro`s fault, just the lame battery from LG. I mean WTF after 15 secs it clocks down !!!!
Yeah, thats weird. But I could live with it, expecially when the phone runs buttersmooth. But if the phone shuts down after a few minutes of processor intensive tasks that's a big problem. I know that barely any app is using 4 cores simultanously, but what happens if you stress-test only one core? Does the phone also shut down?
This doesnt seem that bad, you're stressing it pretty hard which wont ever be done in real word conditions, for example take intel burn test, most people find this stresses the chip to temperatures 15C+ over any possible real word tests/usage.
You say the SGS3 throttles to 800Mhz at some points well thats pretty poor is it not? Clock for clock the s4 pro is superior and so clocking in over 300Mhz faster when throttled its pretty good id say. If you're comparing the S4 vs the S4 pro (US SGS3) then its pretty hard to say the battery sucks when its got more power! Of course it will run hotter haha.
I think they could put back the throttling limits a bit though, I think it maybe a battery issue more than anything though so maybe its a fault... Please test it by stressing a high end game for an hour or so tracking the temps and clock speed, that would be a much better indication.
edit: Seen your reply before me, It wont shut down like that in the real world! If you stress test only one core I can assure you that it will run MUCH cooler, you are essentially testing 2x the amount in the s4 Pro than you are in the dual core varient, in these stress tests it works pretty much 110% each core, in the realworld there will be idle times and switching between cores handling different threads, lots of variences that should mean it would be ALOT cooler all the time even if using all 4.
St4hli said:
Yeah, thats weird. But I could live with it, expecially when the phone runs buttersmooth. But if the phone shuts down after a few minutes of processor intensive tasks that's a big problem. I know that barely any app is using 4 cores simultanously, but what happens if you stress-test only one core? Does the phone also shut down?
Click to expand...
Click to collapse
1 core likely won't generate as much heat, and not to mention the whole point of the cores is to distribute load and operate at max efficiency rather than less cores at max.
I understand that some people have issue with the throttling, but until people report that they can't play x and y after z minutes it is a non issue. It may have to do with the glass, maybe LG battery. It is possible the throttle is there to preserve the higher recharge cycles LG Chem batteries have.
Unless it actually ruins an app experience, on stock rom and kernel, it is not an issue. If someone would rather pay 400 more to boost their bench by 5% that's up to them.
Sent from my Nexus 4 using Tapatalk 2
Mhmm, I guess it won't be a problem in real world usage. Nevertheless it's quite weird that the phone heats up that much AND THEN SHUTS DOWN, expecially in comparison to other phones like the SGS3, where this problem doesn't occur.
But yes, I didn't hear any complaints about critical-heat-shutdowns in real world usage, so maybe I'm just overreacting. But at the moment it's winter in USA and Europe, so let's see how the phone performs in summer heat
My old HTC Desire often overheats and shuts down on hot summer days when I'm using GPS or playing games, so I just hope my next phone won't have this problem
St4hli said:
Mhmm, I guess it won't be a problem in real world usage. Nevertheless it's quite weird that the phone heats up that much AND THEN SHUTS DOWN, expecially in comparison to other phones like the SGS3, where this problem doesn't occur.
But yes, I didn't hear any complaints about critical-heat-shutdowns in real world usage, so maybe I'm just overreacting. But at the moment it's winter in USA and Europe, so let's see how the phone performs in summer heat
My old HTC Desire often overheats on hot summer days when I'm using GPS or playing games, so I just hope my next phone won't have this problem
Click to expand...
Click to collapse
Mine has been shutting down due to overheating at least once a day. I've just exchanged it so will see how that is.
Worryingly, I will often be doing nothing other than web browsing or similar which should not stress the CPU
I work in a cell phone shop ( Technician Manager ) so i fix phones everyday. Most of the people on xda and the internet have noticed the nexus 4 getting warm, I myself thought so too. I did stress test's on Three devices 1.) Nexus 4, which was mine Rooted no stock rom. 2. Galaxy nexus, GT-I9250 rooted stock rom. 3.) Samsung Galaxy III, T999. Rooted running Cm 10.1 latest nightly. Out of the three I found that the nexus 4 had the lowest temperature overall.
. The Samsung Galaxy Nexus got 50-58 C, basic web browsing and watching a short clip on YouTube. 60-68 C Gaming. Game used Eternal Warriors
The Samsung Galaxy S III got almost the same temperatures as the Galaxy Nexus 45-50 C with basic web browsing and watching a short clip on YouTube. Gaming 50-60 C. Game used Eternal Warriors
The nexus 4 with basic web browsing got 35-48 C. Gaming it got 50-62 C
All of the Three Devices ran for 45 minutes and used the same Game/ video to watch.
Just Wanted to share this information, hit the thanks if I've helped you out in anyway
My Nexus 4 gets so toasty if im running Spotify & GPS nav at the same time on long road trips. (And its charging at the same time.)
Kinda surprised to see your results.
IMHO the glass on the back may feel more warm that the plastic back of most other phones because glass conducts heat better than plastic. That is possibly why this phone has the overheating perception in most peoples minds.
doubleatheman said:
My Nexus 4 gets so toasty if im running Spotify & GPS nav at the same time on long road trips. (And its charging at the same time.)
Kinda surprised to see your results.
IMHO the glass on the back may feel more warm that the plastic back of most other phones because glass conducts heat better than plastic. That is possibly why this phone has the overheating perception in most peoples minds.
Click to expand...
Click to collapse
That's what came to my conclusion, for the glass that's on the nexus 4. Notice that I don't have it on the charge it's just on the battery. I think you will get higher temperatures when it's charging
The glass is good in a way or another. This way, it helps the phone's internal components cool down by conducting the produced heat outside.
abaaaabbbb63 said:
The glass is good in a way or another. This way, it helps the phone's internal components cool down by conducting the produced heat outside.
Click to expand...
Click to collapse
So, when the temperature outside is hot the device get's cooler ? Is that what your implying ?
Wow,how did you managed to go to 66 C on the gs3. I,even with the charger plugged in and playing heavy games(MC4,NFSMW) i couldn't make it even to 45 C
Sent from my GT-I9300 using xda app-developers app
Thin_Bezel said:
Wow,how did you managed to go to 66 C on the gs3. I,even with the charger plugged in and playing heavy games(MC4,NFSMW) i couldn't make it even to 45 C
Sent from my GT-I9300 using xda app-developers app
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Click to collapse
Ooops, was a typo. 45-50 C
dia_naji said:
So, when the temperature outside is hot the device get's cooler ? Is that what your implying ?
Click to expand...
Click to collapse
Yes. The glass absorbs, theoretically, some of the heat inside, and helps keeping the device cool.
Hi,
I agree... I had the 3 phones.
Maybe a thread that can help user about temperature or "pseudo" overheating...
When I see a thread like "My Nexus 4 is overheating, help me" it annoys me. No CPU / battery temperature indicating to see, just a "it feels hot, it overheats" or "I see some threads about Nexus 4 overheating, mine is also overheating, I read it " (it's real ).
Plus people confuse CPU / battery temperature...
Or people complain about "overheating" when playing a game or browsing while charging their phone...
Even 70°C for the CPU temperature is (almost for the the stressed people) nothing and there is a thermal protection in any case. Thermal throttling that reduces the CPU freq according to the CPU temp, same thing for the battery. And in case of extreme temperature -> shutdown.
I remember the max CPU temp for the Galaxy Nexus: 120°C before shutdown , it's not the same CPU but it can give an idea... The max for mine was about 90°C with some benchs, I see some people (simms22 if I remember right ) with something like about 110°C...
With my Nexus 4 (about 21°C room temperature):
Iddle temperature: 24 / 26°C for the CPU and 21°C for the battery
Light use after 15 / 20 mins (XDA app in 3g, homescreen setting): about 38 / 42°C (about 45°C with only XDA app) for the CPU and about 26 / 28 °C for the battery.
Hard use (browsing in 3g, Youtube, camera): about 55°C for the CPU and 31 / 32 °C for the battery (for this I don't remember exactly).
Extreme use (multiple benchs): about 72°C as far as I see for the CPU and about 38 / 40°C for the battery (maybe 42,**°C once).
Browsing while charging the battery is about 44°C and the CPU about 60°C +.
With _motley kernel, no undervolt, 486 Mhz / 1.51 Ghz, and CPU temp set to 70°C before thermal throttling.
I do agree that some people can have an overheating problem but not all the users / phones like we can read in different threads... and people that claims their phones overheats... when tey post the temperatures all is normal...
The feeling of warmth and real heat are two different things and it's very subjective to say "my phone is very hot".
Hi Viking37,
I feel fortable after reading your post.
I have been using Nexus 4 for a month on 4.2.2. and feel very bad on the heating and warm. (compared with previous Desire HD temperature)
I am based on Bateria App, showing only the Battery Temperature.
On Light use after 15 / 20 mins (Chrome or Dolphin browser on 3G): about 30 to 42°C on Battery, but i do not have CPU readings.
On Hard use after 30-45 mins (Youtube, Waze on 3G): about 30 to 42°C on Battery, but i do not have CPU readings.
I noticed i do not gets battery temp reading more than 42°C....
Hope you can advise what app you use to check the Battery and CPU temperature.
Thanks.
Hi ykit88,
You're welcome
For the CPU temperature I use System Tuner pro (on the Play Store and there is a free version), you can add a widget or download for free an "extension" to add the CPU temperature reading in the notification bar (you can set different update time).
There is also at least one more app (I mean that it works perfectly but I don't remember the name).
Your battery temp seems normal to me, it depends also of the room temperature and if you have a case (even if it does not have much influence).
@OP I don't know maybe is just because of Easter but I can't understand your first post, - is just too many Galaxies and I don't think there's Galaxy Nexus 4? But I may be as well wrong.
On the other hand phone getting hot is not an issue for me as HTC Desire used to get a lot hotter just with some browsing where you could smell a little bit of plastic
Sent from my Nexus 4 using xda app-developers app
viking37 said:
Hi,
I agree... I had the 3 phones.
Maybe a thread that can help user about temperature or "pseudo" overheating...
When I see a thread like "My Nexus 4 is overheating, help me" it annoys me. No CPU / battery temperature indicating to see, just a "it feels hot, it overheats" or "I see some threads about Nexus 4 overheating, mine is also overheating, I read it " (it's real ).
Plus people confuse CPU / battery temperature...
Or people complain about "overheating" when playing a game or browsing while charging their phone...
Even 70°C for the CPU temperature is (almost for the the stressed people) nothing and there is a thermal protection in any case. Thermal throttling that reduces the CPU freq according to the CPU temp, same thing for the battery. And in case of extreme temperature -> shutdown.
I remember the max CPU temp for the Galaxy Nexus: 120°C before shutdown , it's not the same CPU but it can give an idea... The max for mine was about 90°C with some benchs, I see some people (simms22 if I remember right ) with something like about 110°C...
With my Nexus 4 (about 21°C room temperature):
Iddle temperature: 24 / 26°C for the CPU and 21°C for the battery
Light use after 15 / 20 mins (XDA app in 3g, homescreen setting): about 38 / 42°C (about 45°C with only XDA app) for the CPU and about 26 / 28 °C for the battery.
Hard use (browsing in 3g, Youtube, camera): about 55°C for the CPU and 31 / 32 °C for the battery (for this I don't remember exactly).
Extreme use (multiple benchs): about 72°C as far as I see for the CPU and about 38 / 40°C for the battery (maybe 42,**°C once).
Browsing while charging the battery is about 44°C and the CPU about 60°C +.
With _motley kernel, no undervolt, 486 Mhz / 1.51 Ghz, and CPU temp set to 70°C before thermal throttling.
I do agree that some people can have an overheating problem but not all the users / phones like we can read in different threads... and people that claims their phones overheats... when tey post the temperatures all is normal...
The feeling of warmth and real heat are two different things and it's very subjective to say "my phone is very hot".
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Click to collapse
this. im sooo tired of telling people that their cpu temp is normal. it bugs me to see people posting that their phone is overheating at 45C, lol. someone even claimed that their 36C phone is overheating, when body temp is 37C
Very good explanation don't forgot the desire has only a single core. While the nexus 4 has 4 cores . It's only natural that it would get warm
Sent from my Nexus 4 using xda app-developers app
simms22 said:
this. im sooo tired of telling people that their cpu temp is normal. it bugs me to see people posting that their phone is overheating at 45C, lol. someone even claimed that their 36C phone is overheating, when body temp is 37C
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Click to collapse
i can barely feel the warmth of my phone at 34°C and i never even reached 40° due to uv
The really only reason why everyone has this idea of overheating is because the glass. It was mentioned a thousand times because glass conducts heat :
Sent from my Nexus 4 using xda app-developers app
Has anyone felt the phone get hotter with a case on rather than it being naked?
yo2boy said:
Has anyone felt the phone get hotter with a case on rather than it being naked?
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Click to collapse
Well, if you think a bit about it, it makes a lot of sense.
yo2boy said:
Has anyone felt the phone get hotter with a case on rather than it being naked?
Click to expand...
Click to collapse
Depends on what case your using.
Thin_Bezel said:
Wow,how did you managed to go to 66 C on the gs3. I,even with the charger plugged in and playing heavy games(MC4,NFSMW) i couldn't make it even to 45 C
Sent from my GT-I9300 using xda app-developers app
Click to expand...
Click to collapse
He said t999 your on the 9300 different phones. The s3 T999 does heat up pretty quick but compared to my g2x that really did overheat occasionally thee's run cold
Sent from my Nexus 7 using xda premium
HAS ANYONE NOTICED OVERHEATING OF PHONE MOSTLY WHILE CHARGING, GAMING (should expect some heat not this much). I play PUBG on smooth basic plus extreme with no AA and gfx lower settings. Still phone heats up. FAN seems to be a marketing gimmick too. Circulation of air is v poor.
My question is can this be fixed via twrp custom rom tweaks. I'm willing to experiment.
Excuse me. Are you one of those geniuses who charges his phone while gaming?
thel'vadam said:
HAS ANYONE NOTICED OVERHEATING OF PHONE MOSTLY WHILE CHARGING, GAMING (should expect some heat not this much). I play PUBG on smooth basic plus extreme with no AA and gfx lower settings. Still phone heats up. FAN seems to be a marketing gimmick too. Circulation of air is v poor.
My question is can this be fixed via twrp custom rom tweaks. I'm willing to experiment.
Click to expand...
Click to collapse
Yes I have the same issue
Aashishmv said:
Yes I have the same issue
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Click to collapse
Describe the issue.
What is the app/activity?
What is the temperature of CPU and Battery?
What is the temperature of air?
nabbed said:
Describe the issue.
What is the app/activity?
What is the temperature of CPU and Battery?
What is the temperature of air?
Click to expand...
Click to collapse
I think nubia have fake temp status.
Or is that a bug i don't know
When i turn the fan on at max speed. Temp increased. Things like that happen. Or when i come back to auto from performance mode. Tem goes up.
Which is weird. Makes me believe that all this temp and gpu turbo and fan is a gimmick.
Air temp is 26 deg Celsius.
thel'vadam said:
I think nubia have fake temp status.
Or is that a bug i don't know
When i turn the fan on at max speed. Temp increased. Things like that happen. Or when i come back to auto from performance mode. Tem goes up.
Which is weird. Makes me believe that all this temp and gpu turbo and fan is a gimmick.
Air temp is 26 deg Celsius.
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Click to collapse
How do you measure the temperature? Was it a temperature of the CPU or the battery?
If your sentiment is not a user error or a fluke, then your unit is defective. Here's what one of the most prolific Youtube reviewers said about the fan - "it was keeping my phone 8 degrees cooler than my Samsung." I assume 8C, not Fahrenheit, because the reviewer is from UK.
https://www.youtube.com/watch?v=G4v3_3cPh0A#t=7m20s
nabbed said:
How do you measure the temperature? Was it a temperature of the CPU or the battery?
If your sentiment is not a user error or a fluke, then your unit is defective. Here's what one of the most prolific Youtube reviewers said about the fan - "it was keeping my phone 8 degrees cooler than my Samsung." I assume 8C, not Fahrenheit, because the reviewer is from UK.
#t=7m20s
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YouTube ers are paid. I check the temp stats from gaming app . Inbuilt.
Plus the phone feels hot in hand. Not 8 degrees cooler. And Hunan hand can easily feel 8 degrees change in temp over 5-10 minutes
thel'vadam said:
YouTube ers are paid. I check the temp stats from gaming app . Inbuilt.
Plus the phone feels hot in hand. Not 8 degrees cooler. And Hunan hand can easily feel 8 degrees change in temp over 5-10 minutes
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Click to collapse
Instead of admitting that you were sold a defective unit and exchanging it for a working one, you think there's a conspiracy that involves the Nubia corporation and "paid youtubers."
But hey, I'm thinking this guy is not a psychopath. Maybe it's just a user erorr.
Maybe he thinks that having a fan in the phone should make the phone feel cool to touch during gaming.
Maybe he simply doesn't understand that the fan may be lowering the temperature from 55C to 47C, and that 47C will still feel hot to the hand.
Hey guy,
Can you actually provide real world numbers with screenshots?
No one has experienced anything like this before, so either your phone is defective or you have a nervous breakdown.
Yes, the phone overheats while charging but if you switch on the gaming mode to check heat also in certain Celsius comes down gradually and quickly in my case. So fans not a fake gimmick. Also when you are playing games heat is normal for heavy graphic 3d rendering titles like pubg, fortnight I play pubg with extreme HD and it heats but the fan keeps decreasing the heat. My suggestion is to charge where there is air free flow of air like a fan, AC, or cooler to keep ambient temp in control.
praveenparvani said:
Is the phone overheats when charging but if you switch on the gaming more and the famine normal performance also the Celsius comes down gradually so when is not fake also when you playing games that is normal heating I play with extreme HD and it heats but the fan keeps decreasing decreasing heat my suggestion is to charge where there is air flow free air flow are a fan AC cooler on.
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Click to collapse
What he said. Sorry.
nabbed said:
Instead of admitting that you were sold a defective unit and exchanging it for a working one, you think there's a conspiracy that involves the Nubia corporation and "paid youtubers."
But hey, I'm thinking this guy is not a psychopath. Maybe it's just a user erorr.
Maybe he thinks that having a fan in the phone should make the phone feel cool to touch during gaming.
Maybe he simply doesn't understand that the fan may be lowering the temperature from 55C to 47C, and that 47C will still feel hot to the hand.
Hey guy,
Can you actually provide real world numbers with screenshots?
No one has experienced anything like this before, so either your phone is defective or you have a nervous breakdown.
Click to expand...
Click to collapse
There is term called "anpad", search google. Means noob.
In forums here devs try to explore and experiment with every possible problem the OS or hardware may face.
See im not going to respond further to your low IQ behaviour anymore. Good day to you.
praveenparvani said:
Is the phone overheats when charging but if you switch on the gaming more and the famine normal performance also the Celsius comes down gradually so when is not fake also when you playing games that is normal heating I play with extreme HD and it heats but the fan keeps decreasing decreasing heat my suggestion is to charge where there is air flow free air flow are a fan AC cooler on.
Click to expand...
Click to collapse
Yes
That is understandable, but then what is the fun of a fan gimmick when you need additional external air circulation with AC.
Even with clash of clans. Not much demanding game phone heats up. Plus additional charging while playing the temp increases continuously.
Circulation of heat and cooling inside the phone is poor. I'm starting to wonder if the battery has nay issues of heat while charging.
thel'vadam said:
There is term called "anpad", search google. Means noob.
In forums here devs try to explore and experiment with every possible problem the OS or hardware may face.
See im not going to respond further to your low IQ behaviour anymore. Good day to you.
Click to expand...
Click to collapse
Low iq behavior? Projection much?
You are the one who's playing games while charging the phone, something that should not be done to a cellphone battery especially with 26C ambient air.
You realize that by charging and playing you are heating up the battery and the cpu at the same time and that's really going to cut battery's life real quick?
nabbed said:
What he said. Sorry.
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Click to collapse
Apologies for the mess. Was relyed on Google voice without proof reading. I have edited now.
I'm not suggest to plug in a charger while gaming, it will make the phone hot, especially when you using the original fast charger. Anoher thing is you hae to know you can't get a high performance with the low temperature, if you get a very hot phone, the cpu will running in a low clock speed. The RM3 can get highest score on Antutu so I think the fan is doing something.
JerryYin said:
I'm not suggest to plug in a charger while gaming, it will make the phone hot, especially when you using the original fast charger. Anoher thing is you hae to know you can't get a high performance with the low temperature, if you get a very hot phone, the cpu will running in a low clock speed. The RM3 can get highest score on Antutu so I think the fan is doing something.
Click to expand...
Click to collapse
I agree the fan is going something. Had the circulation been a bit effective i think it could have been utilised in a more better way.
Anyways i was just charging the phone while gaming to test the heat limits. Not actually doing it.
Still i have noticed battery heat while standby charging
thel'vadam said:
I agree the fan is going something. Had the circulation been a bit effective i think it could have been utilised in a more better way.
Anyways i was just charging the phone while gaming to test the heat limits. Not actually doing it.
Still i have noticed battery heat while standby charging
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Click to collapse
If you are using a fast charger, the battery will get hot, that's normal.
Nubia red magic 3 Phone crashes..
I played pubg for 2hrs, the phone became unresponsive, the phone becomes so hot and the screen flashes with white pictures.. red magic 3..
Bunblebee01 said:
I played pubg for 2hrs, the phone became unresponsive, the phone becomes so hot and the screen flashes with white pictures.. red magic 3..
Click to expand...
Click to collapse
What was the ambient temperature?
28degree c and lower, the same problem occurs.. nubia support told me its normal?
---------- Post added at 01:20 AM ---------- Previous post was at 01:15 AM ----------
I guess i have to stick with it and just cool it down every after 1game of pubg..
Which of the following phones gets warmer or hotter then it should?
- Pixel 7
- Pixel 6a
- Galaxy S22
- Galaxy S21 FE
@mruno @Mrcactuseater ?
Depends on how you set up the phone, the way you charge it, the daily usage and the weather conditions basically.
xda-eh said:
Which of the following phones gets warmer or hotter when it shouldn't?
- Pixel 7
- Pixel 6a
- Galaxy S22
- Galaxy S21 FE
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Click to collapse
each one of them had overheating problems
Fytdyh said:
each one of them had overheating problems
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Like every other modern flagship that doesn't have a fan added to it.
Fytdyh said:
each one of them had overheating problems
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Click to collapse
EtherealRemnant said:
Like every other modern flagship that doesn't have a fan added to it.
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Which are worse, and which are the lesser of the evils?
dexlemaffo said:
Depends on how you set up the phone, the way you charge it, the daily usage and the weather conditions basically.
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Click to collapse
Please elaborate. Thanks.
xda-eh said:
Which are worse, and which are the lesser of the evils?
Please elaborate. Thanks.
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Click to collapse
Pixel 6a is widely considered to be the worst of the bunch. The other three seem to be pretty comparable.
It really does depend what you do with the phone. My 7 Pro never gets more than warm. The highest battery temp I've seen is about 43C and that was when I first got it and it was going through the process of setting up all my apps, day to day it's much lower - in fact I've been using it for the last half hour or so while it's been charging and it's only at 39.5C. My iPhone 12 Pro Max and my OnePlus 9 both ran hotter on average.
That said, I live in Colorado, not some hot place like India, so our average ambient temp is about 69F/20.6C indoors and less than that outside right now. Obviously I'm going to have a cooler phone than someone whose ambient temperature is higher.
xda-eh said:
Which are worse, and which are the lesser of the evils?
Please elaborate. Thanks.
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Click to collapse
The idea is simple. Each of them is prone to overheating. Max normal temperature is 45 degrees Celsius. Anything over that means you might have a problem. Now it totally matters on your action. If you are gaming, the phone might reach that temp and then throttle itself down. Lesser of evils? There isn't. You want to avoid overheating? Don't game on the phone. Buy a cooler. Don't keep the brightness at max. Don't use your phone too much.
Fytdyh said:
...You want to avoid overheating? Don't game on the phone. Buy a cooler. Don't keep the brightness at max. Don't use your phone too much.
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Click to collapse
Doesn't that defeat the purpose of buying "high end" phones as opposed to mid-range ones?
This depends on how you define overheat.
A phone that's "hot" to the touch is an indication that the heat is being brought from the SOC to the heat spreader to the surface of the phone in order for it to be expelled as it should. Essentially the phone is a big heatsink and the more effective the heatsink, the more heat is transferred to the surface of the phone then eventually away from the SOC. The real issue is how the software handles the internal heat of the SOC. If working properly, you would want minimal or no throttling at all. But by design, there will always be some throttling, even if the SOC heat dissipation is ideal. Environment temps are taken into account, all the while to keep the SOC from reaching a heat which has an adverse effect on performance. The manufacturers just want the highest specs on paper, but balanced with a subjective opinion on what surface temps will get reproach and what throttled performance will be noticeable. I would take a "hot" phone that does minimal throttling over a "cool" phone that throttles the SOC.
oryanh said:
This depends on how you define overheat.
A phone that's "hot" to the touch is an indication that the heat is being brought from the SOC to the heat spreader to the surface of the phone in order for it to be expelled as it should. Essentially the phone is a big heatsink and the more effective the heatsink, the more heat is transferred to the surface of the phone then eventually away from the SOC. The real issue is how the software handles the internal heat of the SOC. If working properly, you would want minimal or no throttling at all. But by design, there will always be some throttling, even if the SOC heat dissipation is ideal. Environment temps are taken into account, all the while to keep the SOC from reaching a heat which has an adverse effect on performance. The manufacturers just want the highest specs on paper, but balanced with a subjective opinion on what surface temps will get reproach and what throttled performance will be noticeable. I would take a "hot" phone that does minimal throttling over a "cool" phone that throttles the SOC.
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Not to mention that most people don't have thermal cameras and are just going by how it feels to them. Humans are not good at detecting differences in temperature. What feels hot to one may feel warm to another and vice versa.