Hi! I noticed that according to Franco's app my CPU temp is almost always above 40 degrees just after some usage (Facebook,browsing,texting) and only drops to around 28 degrees after being idle. As this is causing throttling I wanted to ask if it was just me or are these normal temperatures?
I am running Franco Kernel r98 with no CPU overclocking or undervolting
Sent from my Galaxy Nexus using XDA
Thanks Can you please tell me how ro set the throttling settings?
Sent from my Galaxy Nexus using XDA
bencozzy said:
On cellular data yes fairly normal.
All the way up to 60c on our CPU can be sustained with out to much harm.
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Agreed. 60c is probably a conservative termal design limit (I'd expect something at a minimum of 80-100c before there was any actual damage to the CPU. Though, that kind of temp would probably damage your HAND or the plastic housing before the silicon. Anyone know why anyone would force throttling at only 40c? Power conservation comes to mind.
bencozzy said:
True power conservation, but now we are making it complete a task at 700mhz for twice as long when it could be done in a flash at 1350 MHz kind of defeats the purpose? That's like hot plugging good in theory but real world says other governors give same battery life and without the instability lagginess.
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I though someone did some real world testing a while back and found that 2x700MHz drew less power than 1x1350MHz?
Related
As far as power saving goes, we all know dark wallpapers, small data usage and brightness can drastically reduce power consumption. CPU is also a large part of power usage especially the GN's dual core. I haven't messed with SetCPU since my nexus one. What might be some of the SetCPU profiles you might be using? And some of the other power saving techniques?
So far I just have a flat black wallpaper, auto-brightness, and a setCPU profile of the lowest MHz when screen off, although I can't tell if the profile is making a difference.
I have screen off at 350/700 because 700mhz only costs me an extra 100mv with my undervolts. And battery <20% @ 350/700 Also but my battery life is so good i havent made it to <20% yet.
Sent from my Galaxy Nexus using xda premium
How do i change the amount of volts used in SetCPU?, sorry i have no experience with voltages haha
mikeacela said:
How do i change the amount of volts used in SetCPU?, sorry i have no experience with voltages haha
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You need a kernel such as this
I'm currently using the UV only kernel as I dont find an overclock is necessary on the Gnex.
Basically, the stock kernels on this phone (like every other phone) don't support voltage control out of the box
@rbiter said:
I have screen off at 350/700 because 700mhz only costs me an extra 100mv with my undervolts. And battery <20% @ 350/700 Also but my battery life is so good i havent made it to <20% yet.
Sent from my Galaxy Nexus using xda premium
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I have the same screen off profile, with conservative governor. On the stock 4.0.1 kernel. No problems with this at all. Probably saves quite a bit of battery.
Antzor said:
You need a kernel such as this
I'm currently using the UV only kernel as I dont find an overclock is necessary on the Gnex.
Basically, the stock kernels on this phone (like every other phone) don't support voltage control out of the box
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Is this kernel compatible with CDMA bands?
mikeacela said:
Is this kernel compatible with CDMA bands?
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Nope
Sent from my Galaxy Nexus using XDA App
Running ARHD 2.1.2 on LTE VZW GNex
CPU Profiles:
350/350 when Battery <20% Priority 97
700/350 when Battery <50% Priority 99
920/350 when Battery <80% Priority 98
350/350 when Screen Off Priority 100
Not sure how effective they are, only second day using the profiles.
Have a question regarding min CPU speed vs voltage. I run task's Roman with stock kernel. My phone is not stable unless I up the voltage on the CPU clock at both the 189 and 378 speeds to 925mv.
So here's the question... since both speeds use 925mv, wouldn't it make more sense just to leave the min CPU speed at 378? Seems to me the faster min speed would process faster allowing the phone to go into deep sleep faster and saving battery.
Thoughts?
192 and 384, you mean?
Personally, I prefer my min at 192 not cos of mV difference, but cos it keeps my phone lots cooler when at min speeds.
I asked a similar question with no response. mine goes down to 81mhz and stays stable but a higher clock speed uses the same voltage so I thought just run the higher one. unless deep sleep is consistent then it shouldnt matter. but for cases like bluetooth or music streaming the higher speed might seem better. but the more heat thing must cause more battery usage I would think
s384 said:
I asked a similar question with no response.....
....more heat thing must cause more battery usage I would think
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Looks like some thread lost with time...
More heat isn't good... heat is nothing but energy dissipated... and that means energy lost... So more heat is an indicator that you are kinda pushing your CPU to work hard and harder the work, more the battery utilized.
The voltage consumption of a CPU is calculated by f*V^2. So to answer the question, even if two frequencies share the same voltage, the lower frequency will still consume less power than the higher frequency.
Sent from my SGH-I747 using xda app-developers app
my note 8 get very hot when i play modern combat 4 the temp about 71 degree (measured by system tuner ) and the battery temperture about 37 or more and the left side of the screen becomes very hot and the battery drain quickly is this will harm my device sorry for my bad english ??
messi2050 said:
my note 8 get very hot when i play modern combat 4 the temp about 71 degree (measured by system tuner ) and the battery temperture about 37 or more and the left side of the screen becomes very hot and the battery drain quickly is this will harm my device sorry for my bad english ??
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This might be a question better answered by Samsung (unless it is a carrier model). Many questions though....
Does it get too hot to hold? Are you charging it while playing? Is your tablet oc/ov? What is the ambient temperature where playing?
Here is a previous thread with this same topic: http://forum.xda-developers.com/showthread.php?t=2251830
Might scroll through the posts and maybe even post there about it as well. Sorry, can't help anymore than this.
CCallahan said:
Does it get too hot to hold? Are you charging it while playing? Is your tablet oc/ov? What is the ambient temperature where playing?
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yes some times - never charging while using it - iam running the stock rom witout any modification or oc - the cpu temperture while playing about 71 degreer
71 degreescelcius or Fahrenheit? If Fahrenheit that's good...
Sent from my GT-N5110 using Tapatalk 4
janjannsen99 said:
71 degreescelcius or Fahrenheit? If Fahrenheit that's good...
Sent from my GT-N5110 using Tapatalk 4
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71 degreescelcius
Yea.that's.a.little.hot but....
Sent from my SGH-T889 using Tapatalk 4
janjannsen99 said:
Yea.that's.a.little.hot but....
Sent from my SGH-T889 using Tapatalk 4
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But ??????????
messi2050 said:
But ??????????
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But its not a problem. Your device will power down or turn down CPUs when you reach a certain temperature threshold. At least I know my phone does. I've never seen temperatures like that on any of my devices. The most I've ever seen even when over clocked to 2.1 GHz is in the 50s. Even then I'm not worried about it damage isn't done until the high 80s 90s. But how are you getting these temps. Are you outside in 90 degree heat gaming? I even have my GPU way over clocked and I never seen 70.
Sent from my SGH-T889 using Tapatalk 2
janjannsen99 said:
But its not a problem. Your device will power down or turn down CPUs when you reach a certain temperature threshold. At least I know my phone does. I've never seen temperatures like that on any of my devices. The most I've ever seen even when over clocked to 2.1 GHz is in the 50s. Even then I'm not worried about it damage isn't done until the high 80s 90s. But how are you getting these temps. Are you outside in 90 degree heat gaming? I even have my GPU way over clocked and I never seen 70.
Sent from my SGH-T889 using Tapatalk 2
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in modern combat 4 it reaches 70 c and the left side of the screen become very hot
Yeah, only problem I had with this device and my Note 2. (same processor). These bad boys heat up. Especially if you do alot of flashing of roms.
Yea I ran my note 2 really hot playing dead trigger last night and overclocked 1.92 ghz plus 733 mhz gpu overclock but I still dont have heat readings of more than 56 celcius. And I have an app that monitors cpu temperature while im playing so I can see it in real time. Maybe your device is having a problem. Oh do you have a real thick case? That can cause heat buildup. If I leave , y case on my note 2 while playing a game it causes less heat dissipation and runs almost 10 degrees warmer. You might wanna consider that
Sent from my GT-N5110 using Tapatalk 4
nickdollahz said:
Yeah, only problem I had with this device and my Note 2. (same processor). These bad boys heat up. Especially if you do alot of flashing of roms.
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Click to collapse
snapdragon is the best
janjannsen99 said:
Yea I ran my note 2 really hot playing dead trigger last night and overclocked 1.92 ghz plus 733 mhz gpu overclock but I still dont have heat readings of more than 56 celcius. And I have an app that monitors cpu temperature while im playing so I can see it in real time. Maybe your device is having a problem. Oh do you have a real thick case? That can cause heat buildup. If I leave , y case on my note 2 while playing a game it causes less heat dissipation and runs almost 10 degrees warmer. You might wanna consider that
Sent from my GT-N5110 using Tapatalk 4
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i never used any case for my note but there are some Crackling in the left of the back cover of the device when you click on it you feel it is not a good compound sorry for my bad english
Now i underclocked the cpu to 1 ghz and i dont undervoltage is this will harm my cpu or battery now the max degree while playing 55
messi2050 said:
Now i underclocked the cpu to 1 ghz and i dont undervoltage is this will harm my cpu or battery now the max degree while playing 55
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Why will undervolting harm your CPU or battery? I can see stability issues with undervolting and have experienced them while experimenting with the settings. I cant see how it would harm the hardware though. As someone said above. The device should shut down if the processor gets too hot to protect itself. Also, undervolting should reduce the temperature.
The built in powersaving option in touchwiz will underclock your cpu to 1.1GHz. you can set it back to your standard setting with a push of a single button the menu.
I overclock and undervolt and have no worries about damage. I have had issues with my tablet turning itself off sometimes, but it has only happened on particularly hot days. I reduced my OC from 1.8 to 1.7Ghz. And i reduced my undervolt from -75 to -50 vs stock as I was having the occasional crash.
Are the CPU and GPU on the same processor or located in the same area of the tablet? I hear alot on hear about the CPU temp making the device extremely warm but wondered how the GPU acted. If you underclock the CPU, does this put more load on to the GPU when playing games or will the GPU load be the same regardless.
hertsjoatmon said:
Why will undervolting harm your CPU or battery? I can see stability issues with undervolting and have experienced them while experimenting with the settings. I cant see how it would harm the hardware though. As someone said above. The device should shut down if the processor gets too hot to protect itself. Also, undervolting should reduce the temperature.
The built in powersaving option in touchwiz will underclock your cpu to 1.1GHz. you can set it back to your standard setting with a push of a single button the menu.
I overclock and undervolt and have no worries about damage. I have had issues with my tablet turning itself off sometimes, but it has only happened on particularly hot days. I reduced my OC from 1.8 to 1.7Ghz. And i reduced my undervolt from -75 to -50 vs stock as I was having the occasional crash.
Are the CPU and GPU on the same processor or located in the same area of the tablet? I hear alot on hear about the CPU temp making the device extremely warm but wondered how the GPU acted. If you underclock the CPU, does this put more load on to the GPU when playing games or will the GPU load be the same regardless.
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i cant undervolted because the CivZ-Sb kernel is not working with 4.2.2
My average CPU temp is 34°C (93°F), and I go up to 67°C (152°F) when I play games (like GTA-VC).
Do you think it's normal that kind of temperature from the S4Pro ?
Actually this is really low...
67c on high load like games, which stress the cpu?
My device goes to 80c easily, starts to throttle cpu speed and shut down cores, all of the devices do that. This temps are normal.
By the way which app you used to measure that temps?
If you really want to see how your device holding up,
Download that app:
https://play.google.com/store/apps/details?id=com.into.stability
While run the classic Stability Test measure your cpu usage and temps.
Personally I use FauxClock.
After a few minutes you'll see the high temps and the cores throttle.
Oh, joining this question. Just got a 32Gb LTE version and found out it's getting quite warm when playing something like Osmos, Doodle Jump or something. I don't know how to get the exact temperature, cause monitors I' found on market, show only the battery temp. Anyway who else gets his N7 warm/hot when some heavy app is running? Asking, cause my friend also got the same N7 and I don't remember it to be hot even after running 3D games for quite a long time.
I used the app "System Tuner" from gplay.
Apparently, your StabilityTest app requires more power than GTA-VC, I recorded a 82°C with a 50mV undervolt (on Franco r3 kernel) after a 8min StabilityTest, then I just stopped it. I'm a little afraid of this kind of temperature :/ Are you sure it's okay ? I don't know well the mobile device world...
That's the real temperature , even higher,
And you don't need to worry too much.
Your device will turn off if the CPU reaches too high CPU temp,
And 80-90 c is fine. The soc is built to work on that temps.
As you could see your CPU shutdown cores and lower cores speed while the temperatures going higher, that's called throttle.
You don't need to worry too much.
Sent from my Nexus 7 using Tapatalk 2
Vaykadji said:
Apparently, your StabilityTest app requires more power than GTA-VC, I recorded a 82°C with a 50mV undervolt (on Franco r3 kernel) after a 8min StabilityTest, then I just stopped it. I'm a little afraid of this kind of temperature :/ Are you sure it's okay ? I don't know well the mobile device world...
Click to expand...
Click to collapse
StabilityTest can load all 4 CPU cores 100%. You won't find a game that does that.
The CPU will be thermally throttled (clock frequency will be limited when the temperature is too high), so you won't damage anything.
And is the average temp of 45-50 °C normal? I'm just using Skype and surfing the internet.
Sent from my Nexus 7 using xda premium
If you run a adb logcat while gaming you start to see alerts going off for high temperatures when it gets around 70°c or higher. I found it very interesting that it was alerting when it got that high instead of ignoring it like you say till 80-90°c.
Sent from my Nexus 7 using XDA Premium HD app
tni.andro said:
StabilityTest can load all 4 CPU cores 100%. You won't find a game that does that.
The CPU will be thermally throttled (clock frequency will be limited when the temperature is too high), so you won't damage anything.
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Games use GPU which adds much more heat to the conclusion.
Stability Test don't.
Blade Zero (W1nst0n) said:
If you run a adb logcat while gaming you start to see alerts going off for high temperatures when it gets around 70°c or higher. I found it very interesting that it was alerting when it got that high instead of ignoring it like you say till 80-90°c.
Sent from my Nexus 7 using XDA Premium HD app
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The device doesn't ignore it till 80-90c. It's start at 60c.
I just say that it's safe temp for the soc to operate. Which means your cpu never use all cores, and the cores that active wouldn't be at the highest speed, while the cpu reaches 60c, more heat more throttle.
Ok thanks to all of you, so it's like computers : if it's too hot, it will stop before it reaches a dangerous temperature.
Slavon-93 said:
And is the average temp of 45-50 °C normal? I'm just using Skype and surfing the internet.
Sent from my Nexus 7 using xda premium
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Those are quite ok. If you include skype with voice/video calling ofcourse. I just get about 30-40 with just surfing and chatting facebook messenger skype/yahoo/viber on background
I'm fairly sure the CPU tends to downclock itself not because IT is getting too hot, but because it's generating too much heat for the battery. Almost all CPUs can easily withstand upwards of 80C. Batteries, on the other hand, can't.
Lowering the coltage can help with heat and battery.I flashed the ElementalX kernel,but flar2 didn't tell much about lowering the voltage.
My PVS number is 3,so how much voltage should be lowerd?Not only the minimum,but also others.
I may lower it too much(-100mv),then I got a reboot while playing videos.
Thank you
a1317931279 said:
Lowering the coltage can help with heat and battery.I flashed the ElementalX kernel,but flar2 didn't tell much about lowering the voltage.
My PVS number is 3,so how much voltage should be lowerd?Not only the minimum,but also others.
I may lower it too much(-100mv),then I got a reboot while playing videos.
Thank you
Click to expand...
Click to collapse
Check this guide
http://forum.xda-developers.com/showthread.php?t=2469261
a1317931279 said:
Lowering the coltage can help with heat and battery.I flashed the ElementalX kernel,but flar2 didn't tell much about lowering the voltage.
My PVS number is 3,so how much voltage should be lowerd?Not only the minimum,but also others.
I may lower it too much(-100mv),then I got a reboot while playing videos.
Thank you
Click to expand...
Click to collapse
Overclocking will effect the heat too. The Voltage can be adjusted but most of the time don't need to be fooled with.
Sent from my Nexus 7 Flo running CM 11 4.4.2 with ElementalX Kernel using XDA Premium 4 mobile app
There is very little effect on battery by lowering the CPU voltage. There is a thread somewhere here on XDA where they do out the math and the energy savings from reducing CPU voltage are like 1% or something super low like that. The CPU uses very little power when you compare it to everything else in the tablet, like the 1080p screen, wireless, etc etc etc. Additionally, the overall power used by the CPU is based on both the clock speed and voltage, with high clock speeds being the major contributor to power consumption. Using a power scheme which does not ramp the CPU frequency as quickly or even underclocking the cpu will yield much greater power savings and heat reduction than voltage reduction ever will.
Hnk1 said:
Check this guide
http://forum.xda-developers.com/showthread.php?t=2469261
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well,I mean,the volatage of CPU,not the battery...
anyway,thank you
LinearEquation said:
Overclocking will effect the heat too. The Voltage can be adjusted but most of the time don't need to be fooled with.
Sent from my Nexus 7 Flo running CM 11 4.4.2 with ElementalX Kernel using XDA Premium 4 mobile app
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Click to collapse
I just use the stock frequency.I like reading,high performance isn't needed,so I just want to increase some battery life,some people in tieba told me that lowering cpu voltage can make some great help...
skrypj said:
There is very little effect on battery by lowering the CPU voltage. There is a thread somewhere here on XDA where they do out the math and the energy savings from reducing CPU voltage are like 1% or something super low like that. The CPU uses very little power when you compare it to everything else in the tablet, like the 1080p screen, wireless, etc etc etc. Additionally, the overall power used by the CPU is based on both the clock speed and voltage, with high clock speeds being the major contributor to power consumption. Using a power scheme which does not ramp the CPU frequency as quickly or even underclocking the cpu will yield much greater power savings and heat reduction than voltage reduction ever will.
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oh,it make sense,some people in tieba told me that lowering cpu voltage can make some great help with heat and battry life,look like they misled me,I have nerver noticed the diffrences in heat and battery, only the unstability is obvious...
thank you
skrypj said:
There is very little effect on battery by lowering the CPU voltage. There is a thread somewhere here on XDA where they do out the math and the energy savings from reducing CPU voltage are like 1% or something super low like that. The CPU uses very little power when you compare it to everything else in the tablet, like the 1080p screen, wireless, etc etc etc. Additionally, the overall power used by the CPU is based on both the clock speed and voltage, with high clock speeds being the major contributor to power consumption. Using a power scheme which does not ramp the CPU frequency as quickly or even underclocking the cpu will yield much greater power savings and heat reduction than voltage reduction ever will.
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Click to collapse
Especially with all things considered, the CPU is mostly loafing along. It doesn't start drawing power until it's being asked to work. Lowering the voltage is asking for a laggy device when the chips are down.
I highly suggest lowering the Cpu clock speeds if you want to affect the heat and battery. Lowering the cap speed for the device doesn't allow it to work hard enough to reach speeds to really make it toasty. Same goes with battery life. For example, I'm sure that you can walk much farther than you can run.
Changing the voltage is the equivalent of running down a new street...you have to test and test before you find a good voltage. Every device is different. Someone else's device might do great with the exact same settings that are making your device reboot. Do a lot of reading if you are certain that you want to change the voltages.