I was wondering what some opinions are with how hot
The phone gets with overclocking and when to shut it
Down ? With playing around on the phone it gets to 107*
Fairly quickly depending on outside temperature . What's
A safe and not safe zone for temps ?
Sent from my Rooted HTC G2 with Cyanogen 6.1.1 Stable
If my conversion is right thats 41.67 degrees Celsius.:eek Personally, I wouldnt be comfortable letting it get that hot.
I have a SetCPU profile that if my G2 reaches 38.2 degrees Celsius it underclocks it to 245 (max and min frequency, with performance governor). My G2 has never reached over 34 degrees Celsius though. My daily overclock is in my sig (1.5ghz).
AZ2ENVY said:
I was wondering what some opinions are with how hot
The phone gets with overclocking and when to shut it
Down ? With playing around on the phone it gets to 107*
Fairly quickly depending on outside temperature . What's
A safe and not safe zone for temps ?
Sent from my Rooted HTC G2 with Cyanogen 6.1.1 Stable
Click to expand...
Click to collapse
CPU wise it's fine, other parts of the phone and your hand may not be. If it's too hot to hold it's too hot.
Just a note that temperature is the battery temperature and not the CPU temperature.
Sent from my T-Mobile G2 running Cyanogenmod.
I say keep it under 40 degrees Celsius and you're fine.
My phone has only once gotten that hot. I was running a game app on my phone for over an hour straight and I had a case on. Holding the phone in my hand only added to the heat. My temp profile kicked in and I let my phone chill for a while and it came back to normal.
I do not however underclock it to 245 Mhz. I take it down to normal clock speeds of 806 Mhz and that seems to work well for me.
if you dont care about how hot your phone gets or if your watching it ive takin mine up to 1.5 GHz
My nexus one used to reboot at high temperatures. First the screen would become unresponsive, then it would just reset. I think it started doing that when it got into the mid 40s.
So I was just playing homerun battle 3d for a couple of hours and noticed the back getting fairly warm.... Shut it down and looked at setcpu, 117.5F degrees or 38C!!! Hmm lol and its still running like a champ. Might need to set a temp. profile fo sho!
mrbmg said:
So I was just playing homerun battle 3d for a couple of hours and noticed the back getting fairly warm.... Shut it down and looked at setcpu, 117.5F degrees or 38C!!! Hmm lol and its still running like a champ. Might need to set a temp. profile fo sho!
Click to expand...
Click to collapse
Your conversions are not that great. 40 degrees Celsius is 104 degrees Fahrenheit.
So was your phone at 117.5F or was it at 38C? It can't be both at the same time.
38C isn't bad. 117.5F is quite hot, however.
I'll run the 1.516 GHz OC until the battery gets to 100.4 F. Then I drop it down to 768 MHz. However, when the phone is below the max temp I have it set to 1516 max/256 min (I think it's 256 it might be something else, but I'm too lazy to check). So my phone only starts cooking when I'm running my PSX emulator or something fierce
Sent from my phone which was more than my rent
tazz9690 said:
Your conversions are not that great. 40 degrees Celsius is 104 degrees Fahrenheit.
So was your phone at 117.5F or was it at 38C? It can't be both at the same time.
38C isn't bad. 117.5F is quite hot, however.
Click to expand...
Click to collapse
LoL...my bad I meant 48C. And yes it was hot but the phone handled it. I enabled the temp profile back to clock 800 mhz when it hits 104F
Sent from my HTC Vision using XDA App
Mine seems to never get over 25C (76F) but that's not overclocked
what are the normal battery temp levels for the galaxy tab? Mine goes from around 28 deg Celsius idle to 43 deg Celsius when charging or prolonged use. Are these safe operating levels or is it getting too hot? At 40 degrees i can already feel the back panel getting warm so im a bit worried about the processor. Im not overclocked and even undervolted by 100mV.
Sent from my undervolted Galaxy Tab running Overcome 1.3
http://forum.xda-developers.com/showthread.php?t=845458&page=2
http://forum.xda-developers.com/showthread.php?t=986067&page=2
Trust me, samsung is giving us all a total headache. For once, my battery temperature went to 53degrees Celsius. I laughed so badly when i saw that.
pawces said:
what are the normal battery temp levels for the galaxy tab? Mine goes from around 28 deg Celsius idle to 43 deg Celsius when charging or prolonged use. Are these safe operating levels or is it getting too hot? At 40 degrees i can already feel the back panel getting warm so im a bit worried about the processor. Im not overclocked and even undervolted by 100mV.
Sent from my undervolted Galaxy Tab running Overcome 1.3
Click to expand...
Click to collapse
Just curious, is your battery charging and discharging normally?
Mine's going from 14'C (outdoors) to 35'C max. (playing while pluged). Normal voltage.
Sent from my GT-P1000 Overcome 1.4.2 using XDA Premium App
The most mine ever goes to is about 36 C. both in use and in charging. Overclocked to 1.2ghz
It chatges and discharges normally, i get abot 26-30 hours out of it with average use. I do live in the Philippines though so that may be the normal temp for me. Just want to know what the danger zone is for his device when it cones to temperature.
Sent from my undervolted Galaxy Tab running Overcome 1.3
Mine goes to 37 38 @and 27 idle
Sent from my GT-P1000 using Tapatalk
Normally it is within range between 27-28 and 38 (C) on my overclocked up to 1.2GHz . When charging and running in the same time - temperature may be a bit higher, because the battery becomes warmer during charging. Important factor is software used for measuring, I use 2 different applications and always compare the readings.
I haven't been able to find any info on undervolting the Xoom, so have started this thread in the hope that some may find it beneficial.
What is undervolting?
It basically involves reducing the amount of electrical voltage running through the CPU. It does not affect the speed of the CPU at all, just the amount of power that it uses. The stock configuration of CPUs usually has a fairly high voltage, to cater for the fact that CPUs are not exactly identical.
Why undervolt?
Reduce power consumption, and therefore increase battery life.
Why not undervolt?
Can affect stability, and there is a small risk of damage to your device.
Disclaimer: Undervolting, like overclocking, does have the potential to damage your device. It's very rare, but not unheard of. I've never had a problem, but you may. Good luck, and don't blame me.
My config:
Model: MZ601 Xoom
Kernel: Tiamat Xoom v2.1.0
Undervolting software: SetCPU 2.2.4
My voltages before UV:
MHz mV
216 770
312 770
456 825
608 900
760 975
816 1000
912 1050
1000 1100
1200 1150
1408 1250
1504 1325
1600 1400
1704 1400
So after doing a bit of testing, I've found that I can lower my voltages noticeably throughout the range, reducing the amount of power my Xoom uses, and prolonging my battery.
My UV voltages:
MHz mV
216 770
312 770
456 775
608 825
760 875
816 925
912 975
1000 1000
1200 1075
1408 1125
1504 1175
1600 1250
1704 1325
Notes:
It is not possible to UV any less than 770 mV (with the kernel I'm using anyway).
Given that the mV for the 456 CPU frequency is so similar to 216, I set my minimum clock frequency to 456, which makes the device more responsive.
So, you may want to try these voltages, and see how they work for you.
To test: (Instructions for SetCPU)
Set your min & max speeds to the same frequency, for example 456.
Set the voltage of the 456 frequency to an amount lower that the current amount, for example 775. (It's generally best to adjust your voltage down only 25mv at a time.)
Perform a "Stress Test", for at least about 5 seconds.
If the device locks up or reboots, the mV is too low - try a higher mV.
Once you've found the optimal voltage for that frequency, move onto the next one, for example 608, then 760, etc.
If your device locks up or freezes during testing, you can force a reboot by holding down the Volume Up button, and the Power button.
The voltages I've used above may work for you, or you may have to increase them a little on your device. You may also get better voltages than me - if so, please post your results.
Battery test results
Performed some battery performance testing by doing the following steps:
1. Set the screen to not turn off, and brightness to 10% (screen needs to be on to keep the stress test running, and brightness low to minimise the battery drain of the screen, as that's not what we're testing).
2. Disabled all network connections (WiFi, Bluetooth, Data, GPS) to minimise battery drain by other factors.
3. Closed all other apps, and did not use the Xoom at all during the tests.
4. Charged Xoom to 100%.
5. Set CPU speed to 1504mhz using SetCPU (both min & max frequencies the same for accurate testing).
6. Unplugged the Xoom.
7. Ran "Stress Test" for 2 hours (give or take 20 seconds).
I performed the above steps for both stock voltage, and undervolted voltage. Results as follows:
1. For stock voltage (1325mV on Tiamit Tachi kernel), battery life went down to 62%.
2. For undervolted voltage (1175mV, which is nice & stable for me), battery life went down to 72%.
Findings:
I was expecting battery savings, but not quite this much.
Standard voltage (at 1504mhz) at this CPU load, drains at about 19% per hour.
UV voltage at this CPU load, drains at about 14% per hour.
Standard voltage at this CPU load, the Xoom would drain battery entirely after about 5.26 hours.
UV voltage at this CPU load, the Xoom would drain battery entirely after about 7.14 hours.
In addition to the battery savings, the Xoom was only slightly warm after the UV tests, but very warm after the standard voltage tests. (Standard voltage test was performed first.)
Note: For general usage (email, browsing, basic apps & widgets), the CPU is not as heavily used. But in situations where the CPU is heavily used (such as intensive games), these results show there is significant potential for battery savings.
super nice tips. Tq very much
126-608 -175
Others -150
This is my settings... no prob at all.
Would I use setcpu app or just use the Moray(in settings) or does it matter
rayhodge02 said:
Would I use setcpu app or just use the Moray(in settings) or does it matter
Click to expand...
Click to collapse
Not sure what the "Moray" is, but any tool capable of undervolting should be ok. I like and use SetCPU, but I've tried other tools on other devices in the past, and they did similar things.
nobody wants to share their result after trying?
Very good job, I try
Sent from my Xoom using xda premium
pls share ur best result
I try your results and they're unstable in function off the useful task, exemple impossible to play simple games.
That's all right just for basic tasks like navigation, music ...
Sent from my Xoom using xda premium
Hmm, your stress testing seems inaccurate.
I used your values and did a stress test at each frequency for around 10 seconds. No problem. But my xoom restarted just 5 mins later while I was surfing the net.
So I increased each frequency by 25-50 and it stayed stable since then.
for me i just underclock my xoom to 912mhz. it is almost as fast as 1ghz. and i save battery alot.
Gregus59 said:
I try your results and they're unstable in function off the useful task, exemple impossible to play simple games.
That's all right just for basic tasks like navigation, music ...
Sent from my Xoom using xda premium
Click to expand...
Click to collapse
Try bumping up the voltages a little bit at a time, until you find a stable setting. The settings I listed are what are stable for my Xoom (even intensive 3D games), but CPUs vary. What I get, others may not, and others may get better than me.
musashiken said:
Hmm, your stress testing seems inaccurate.
I used your values and did a stress test at each frequency for around 10 seconds. No problem. But my xoom restarted just 5 mins later while I was surfing the net.
So I increased each frequency by 25-50 and it stayed stable since then.
Click to expand...
Click to collapse
They're not 100%. The longer you stress test, the more likely the CPU is stable, but 10 seconds gives a general idea. If unstable, just do as you did, and increase by 25mv or so.
omnia1994 said:
126-608 -175
Others -150
This is my settings... no prob at all.
Click to expand...
Click to collapse
Can you confirm your mV values? -175 sounds like a big saving. Surely your mV is not less than the minimum 770?
What kernel are you using?
do some proper tests to establish how much extra time you will get from a fully charged batt.
i would think its perhaps a tiny bit at most...
the screen would take a huge amount of the batt, the processor would use only a small percentage, so surely cutting a small fraction off a couple of steppings is fairly pointless?
baron von bubba said:
do some proper tests to establish how much extra time you will get from a fully charged batt.
i would think its perhaps a tiny bit at most...
the screen would take a huge amount of the batt, the processor would use only a small percentage, so surely cutting a small fraction off a couple of steppings is fairly pointless?
Click to expand...
Click to collapse
1. It depends what you're using the device for. Games, for example, can use a lot of CPU, so undervolting in this instance, will definitely use noticeably less battery.
2. If CPU voltage throughput didn't make any difference, we'd all just run our devices at 1700mhz all the time.
3. With undervolting, I can run my Xoom at the same voltage at 456mhz, as it run at 216mhz. This means I set my minimum frequency to 456 instead, and for the same minimum battery consumption, my device is noticeably smoother.
If you want to know how much extra time you will get from a fully charged battery, YOU do some tests.
lindsaytheflint said:
Can you confirm your mV values? -175 sounds like a big saving. Surely your mV is not less than the minimum 770?
What kernel are you using?
Click to expand...
Click to collapse
Yes i m sure. Has been using these settings till now.. no prob at all. Using tiamat stock gpu kernal with moray rom
i agree that during low intensity operation the power savings are probably nearly negligible, but during CPU-intense usage it could save a bit.
I myself am not willing to leave my Xoom on full bore for a series of tests lasting 7-10 hours each just to quantify how much power undervolting can save under super extraordinary circumstances.
But even if the energy savings is an arguable benefit, the reduction in CPU temperature is not. That alone makes this worth doing, IMO.
Agree.. after setting it my xoom now has lower temp when playing it
hi.
did someone else experience extreme over-heating while browsing?
Today I was browsing for a few minutes using Chrome. The phone was lying on the table and I wasn't holding it in my hand. At one point I have noticed that the screen glass is very hot. I checked the temperature and found out it was 60 degrees Celsius ! (about 140 Fahrenheit).
Is that normal?
I also have an undervolt ( -125 mV).
romitkin said:
hi.
did someone else experience extreme over-heating while browsing?
Today I was browsing for a few minutes using Chrome. The phone was lying on the table and I wasn't holding it in my hand. At one point I have noticed that the screen glass is very hot. I checked the temperature and found out it was 60 degrees Celsius ! (about 140 Fahrenheit).
Is that normal?
I also have an undervolt ( -125 mV).
Click to expand...
Click to collapse
60C is a normal temperature for the cpu, not even close to overheating. is your phone in a case?
romitkin said:
hi.
did someone else experience extreme over-heating while browsing?
Today I was browsing for a few minutes using Chrome. The phone was lying on the table and I wasn't holding it in my hand. At one point I have noticed that the screen glass is very hot. I checked the temperature and found out it was 60 degrees Celsius ! (about 140 Fahrenheit).
Is that normal?
I also have an undervolt ( -125 mV).
Click to expand...
Click to collapse
well..i'd experienced that kind of increasing temperature,but limit was 45 c only,otherwise,i'm using 3g network,with wifi,no such increase in temperature
I experienced same problem today (went on family roadtrip so I was using 3G for browsing otherwise i use WiFi). I use PA 3.15 26April and Franco kernel r134. With -100 mV undervolt and high frequency 1188Mhz. Phone became realy hot I would say around 50°C (back glass) but heat didnt come from CPU but from right and a bit up from CPU.
Xmaster8 said:
I experienced same problem today (went on family roadtrip so I was using 3G for browsing otherwise i use WiFi). I use PA 3.15 26April and Franco kernel r134. With -100 mV undervolt and high frequency 1188Mhz. Phone became realy hot I would say around 50°C (back glass) but heat didnt come from CPU but from right and a bit up from CPU.
Click to expand...
Click to collapse
its either from the cpu or battery. if the heat was close to the camera(up), then its cpu. if its cpu, then its way below overheating.
Before I call up EE and ask for a replacement I would just like to check if these temps are normal and if anyone else can run the same test and check what there temp gets to on the Note 4.
Firstly my Note 4 idles at around 36 degrees C which is pretty normal from what I can see. When running the Epic Citadel Benchmark on max Quality the Temperature reached a very hot 77 degrees C before I decided to stop it and shut it down.
It also reaches temps above 70 degrees C in Grand Theft Auto Vice City aswell on max settings.
Could a couple of you guys with the Note 4 please download and run the Epic Citadel Benchmark.... and use the CpuTemp app to measure the CPU temp while its running. This app has an overlay feature so you can watch the temp while the benchmark is running and I would love to know what the max temperature is that it reaches during it so I know if my phone is normal or faulty.
I get a score of about 52fps but the temperature just seems to high to me even though my idle temp is normal.
it would be very much aprechiated thank you.
That sounds about right. I just downloaded it and ran the benchmark on High Performance and got 56.4 FPS avg and the temp was around 52 degrees (started at idle, which was about 35, 36 degrees). Actually it basically spent most of its time during the benchmark at 1.5 GHz and just over 50 degrees. Then I let it cool down a bit and ran it again on Ultra High Quality and got a 48.9 FPS avg and the temp was around 77-78 degrees, spiking to around 80, but even at 80 degrees it was still fully clocked at 2.7 GHz.
But at least for me I notice even when using a couple pop up windows to play a youtube video (music, static image) while browsing Facebook and having Messenger chat heads up that the phone heats up quite a bit, going towards and around 70 degrees the more FB posts I go down and I can see it mostly around 1.5 GHz but it's still stuttery. I use CPU temp and frequency in status bar from XPosed Framework so I did have to keep dragging the status bar down to check. I'm curious what the scrolling performance would be like using ART instead but I'd have to give up XPosed and I don't think I'm ready to do that yet.