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Thermothrotteling a performance killer on snapdragon N910F?

Hi,
I know that thermothrotteling is a feature to protect the cpu against damage. But what I notice that the temperature on my Note 910F is raising quire fast and that I am running into performance issue quite easily. Just playing arround the internet , watching something at youtube is bringing the device into the throtteling mode and than everthing is in slow motion (no hardcore games are neccessary). On my Note 3 I was never aware about such a situation.
Im using the Echoe rom 1.1 with the Ecoe kernel 3.5 (and fairly conservative power saving settings), but it is not kernel related because on stock it is the same.
Anybody facing a simelar situation?
Best regards,
dingolino

Thats not normal :/ i guess sd being 28nm and clocked at 2.7ghz does generate some heat

Your not alone. That is the very reason why I rooted my phone yesterday. The Samsung DVFS is very aggressive on my note 4 with 4.4 kittkatt.
Iv noticed in benchmarks once my phone heats up a little it drops the GPU and CPU down to about half speed and im only getting half the score and in gaming after a few minutes I would start to notice a little lag and my cpu speed would be staying at 1297. It slowly drops down to that then stays around there.
I disabled the Samsung DVFS and use setcpu aswell to keep it at the full speed while gaming and it works great now and the temps are hardly any different.

Many thanks for the feedback.
I have switched off Touch boost und set Max cpu to 1.9GHz
Will see how it works.
Best regards
dingolino
Gesendet von meinem SM-N9005 mit Tapatalk

It is quite annoying have such a fast phone but it downclocks both the cpu and gpu after a few mins of gaming.
A good test is GTA vice city with the settings cranked up.
With DVFS enabled once it hits about 56 degrees it starts to throttle and downclocks the gpu and cpu to about half and the game becomes a laggy mess.
With DVFS disabled its as smooth as butter but the temp goes up to about 70 degrees. Whats the max safe temp for this phone?

Matson123 said:
It is quite annoying have such a fast phone but it downclocks both the cpu and gpu after a few mins of gaming.
A good test is GTA vice city with the settings cranked up.
With DVFS enabled once it hits about 56 degrees it starts to throttle and downclocks the gpu and cpu to about half and the game becomes a laggy mess.
With DVFS disabled its as smooth as butter but the temp goes up to about 70 degrees. Whats the max safe temp for this phone?
Click to expand...
Click to collapse
I do not know the safe setting.
I am using the echoe kernel and this kernel offers the “intellithermal“ feature from faux. You can set the temperatures when frequency throttling should start as well as kernel throttling. They give in the faux app also some recommendations.
Maybe you give out a try.
But I am disappointed because the throttling is affecting “normal“ life not only hard core gaming and this is for me somewhat a design fault.
At least on my Note 4 F
I never had this on my previous devices that I cannot watch a movie which is stored at my sd card. I have a number of tutorial and maintenance videos which are handy to watch on the device.
Best regards
dingolino
Gesendet von meinem SM-N910F mit Tapatalk

I can confirm this on the N910W8. As soon as the device heats up the frame rates drop dramatically. I also don't game. Just day to day usage. It's strange that some fairly simple tasks can heat things up so much.
I removed my ScanDisk 64GB Class 10 SD card which seemed to improve the heat problem.
Also, when its cool it smokes through GeekBench 3. After it heats up it runs slower then a Galaxy S3.

Just you my friend, I don't have that problem
Sent from my SM-N910F (Note 4)

Donkon....can you let me know what your idle phone cpu temp is? you can use the CpuTemp app and just let me know what it idles at on your homescreen and what it heats up to in a demanding game. Just make sure its the CPU temp and not the battery. thanks
It would be good to compare.

Also I was just doing some tests and these are my results.. im curious to know if these are normal temps.
My phone idles at around 34-38 degrees c.
With DVFS enabled it never goes above around 56 degrees as that's when it starts throttling down.
Iv never had any slowdowns in youtube or videos or anything like that. Its only gaming really and benchmarks where it starts to throttle once it heats up and in a game like gta it starts to lag abit once it throttles as it takes the gpu and cpu down to about half speed.
With DVFS disabled im able to run the full 2647 cpu speed when gaming and its as smooth as butter. My temp in riptide goes up to 58 degrees. In GTA vice city it goes up to around 70 degrees and in the unreal benchmark demo it goes up to about 74/75 degrees. Do these sound like normal temps when your running the full speed of the cpu?

Yeah, it is ok.
The Exynos start throttling at 80°C.

Matson123 said:
Also I was just doing some tests and these are my results.. im curious to know if these are normal temps.
My phone idles at around 34-38 degrees c.
With DVFS enabled it never goes above around 56 degrees as that's when it starts throttling down.
Iv never had any slowdowns in youtube or videos or anything like that. Its only gaming really and benchmarks where it starts to throttle once it heats up and in a game like gta it starts to lag abit once it throttles as it takes the gpu and cpu down to about half speed.
With DVFS disabled im able to run the full 2647 cpu speed when gaming and its as smooth as butter. My temp in riptide goes up to 58 degrees. In GTA vice city it goes up to around 70 degrees and in the unreal benchmark demo it goes up to about 74/75 degrees. Do these sound like normal temps when your running the full speed of the cpu?
Click to expand...
Click to collapse
Which kernel are you using and what means “DVFS“?
Which app are you using for the kernel settings?
Best regards
dingolino
Gesendet von meinem SM-N910F mit Tapatalk

Im using the stock Kernel. Iv only rooted. I haven't installed a custom rom or Kernel yet.
the DVFS is samsungs own voltage and frequency control program. Its what causes the aggressive thermal throttling in kittkatt 4.4. Its been there for along time but in 4.4 its pretty much too aggressive.
When you disable it the phone wont throttle back the GPU and CPU and a silly 56 degrees so it wont start to lag in games after a few minutes.

If anyone has GTA vice city or the epic citadel unreal demo can they run it and tell me what there CPU temp goes up to in those.. I just want to make sure mines normal as it gets very hot. With DVFS it should go up to about 55-60 and without it will be around 70.

Does anyone have freezes followed by restarts when disabling DVFS for just some apps (using blacklist)? I have this problem and disabling DVFS for the whole system really annoys me (opening app speed is slowed down + power saving mode requires a restart). I'm using the exynos C version.

Very high temps when gaming/benchmarking are these normal?

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.

Galaxy S5 overheating is normal?

I play GTA SA in high quality and in a few minutes it is slow, Temple Run 2 loses many FPS, GodFire falls from 60FPS to 30FPS or less, Asphalt 8 begins to have low FPS.
I analyzed the performance of the GPU and CPU:
The phone heats up, reaches an average temperature of 70 ° C (158º F) ~ 80 ° C (176º F) , gives peaks up to 90 ° C (194º F) on hot days.
The GPU performance drops a lot.
The GPU performance falls gradually from 578 MHz to 190.73 MHz and no longer increases until the temperature cools.
I live in Brazil and in recent days made a lot of heat - 32 ° C (89,6º F), is now doing 15 ° C (59º F) and the GPU performance drops to 305 MHz in less than 10 minutes.
I have the S5 makes a week! I received from the Samsung because of problems with the S5 Mini GPS.
This is normal? Or my S5 has problems?
Thanks in advance!
It is G900M - SnapDragon Version
It has no root
Version 5.0 Lolipop

felipebonito said:
I play GTA SA in high quality and in a few minutes it is slow, Temple Run 2 loses many FPS, GodFire falls from 60FPS to 30FPS or less, Asphalt 8 begins to have low FPS.
I analyzed the performance of the GPU and CPU:
The phone heats up, reaches an average temperature of 70 ° C (158º F) ~ 80 ° C (176º F) , gives peaks up to 90 ° C (194º F) on hot days.
The GPU performance drops a lot.
The GPU performance falls gradually from 578 MHz to 190.73 MHz and no longer increases until the temperature cools.
I live in Brazil and in recent days made a lot of heat - 32 ° C (89,6º F), is now doing 15 ° C (59º F) and the GPU performance drops to 305 MHz in less than 10 minutes.
I have the S5 makes a week! I received from the Samsung because of problems with the S5 Mini GPS.
This is normal? Or my S5 has problems?
Thanks in advance!
Click to expand...
Click to collapse
Doesn't sound normal to me, RMA if you can.
Sent from my SAMSUNG-SM-G900A using Tapatalk

Which version of the phone u have? G900f?
And what version of android are u running?
And are u rooted?

It will throttle if it overheats, playing GPU/CPU intensive games on a hot day is a good combination to overheat the phone
Find somewhere cool and try playing them again, see if it still throttles

Supernatural77 said:
Which version of the phone u have? G900f?
And what version of android are u running?
And are u rooted?
Click to expand...
Click to collapse
It is G900M - SnapDragon Version
It has no root
Version 5.0 Lolipop

*Detection* said:
It will throttle if it overheats, playing GPU/CPU intensive games on a hot day is a good combination to overheat the phone
Find somewhere cool and try playing them again, see if it still throttles
Click to expand...
Click to collapse
Today is 18ºC (64,4ºF) and it heats up to 85ºC (176ºF) according to the CPU-Z and GPU reached drop to 190MHz, as well as on hot days.
The average temperature is 45 ° C (113ºF) today without using it. It is normal on hot days is higher than 50 ° C (122ºF).
The processor did not exceed 70ºC (158ºF)
I don't know how high it is acceptable. I mean, lose the GPU performance in a few minutes.

felipebonito said:
Today is 18ºC (64,4ºF) and it heats up to 85ºC (176ºF) according to the CPU-Z and GPU reached drop to 190MHz, as well as on hot days.
The average temperature is 45 ° C (113ºF) today without using it. It is normal on hot days is higher than 50 ° C (122ºF).
The processor did not exceed 70ºC (158ºF)
I don't know how high it is acceptable. I mean, lose the GPU performance in a few minutes.
Click to expand...
Click to collapse
That's pretty high, have you done a reflash/factory reset? Some process must be making it run like that.
Sent from my SAMSUNG-SM-G900A using Tapatalk

Rakuu said:
That's pretty high, have you done a reflash/factory reset? Some process must be making it run like that.
Sent from my SAMSUNG-SM-G900A using Tapatalk
Click to expand...
Click to collapse
I've tried, I have almost nothing installed. If I do not use the S5 the processor is almost stopped.
Also this occurred in 3 Lolipop updates I have received beyond the first.
The first time I turn it on and I set it up, he came to be very hot, downloaded CPU-Z and marked up to over 80 ° C. (The day was hot)
(Sorry for my english)

Can someone help me? Share the experience?

thats hot,i live in malaysia where the temp as same as there and now the weather became more hotter than usual in here , but my s5 g900f just acting like normal,no fps drops , even when im playing with heavy games together with vpn apps.
maybe your phone hardware got somehing wrong wih it.

Thanks for all the answers. I took my device in technical assistance for analysis and see what happens ...
If anyone else has expriencia, please share.

GPU Thermal Throttles at 55 celsius

Hi, im new to this phone (i9505) and ive noticed how easy it is for the gpu (adreno 320) to throttle down to 200mhz from 450mhz is just 55 degree celsius.
I have an xperia z that has almost the same specs yet it throttles at like 70 degree celsius.
Is this normal or does my galaxy s4 has a problem or something? Already tried both stock 5.0.1 and lineage 14.1, same result. Also updated bootloader just in case it would yield a difference but it didnt.

Normal or overheating

Guys I just bought a second hand exynos S8. I'm using it in medium powersaving mode with 70% cpu power and HD+ resolution. Even in light usage with 50 % or less brightness antutu and cpu z show 36 c battery temperature and cpu goes in between 52 to 60 c all the time. Can you please check your temperatures. Is it normal or is my handset defective? Appreciate your help.
In comparison my sony xperia xz never goes over 40 degrees even when used when charging