So I just flashed an oc kernel and am currently running at 1120mhz. On SetCPU what is a safe temperature range? Also is there anything else i should be aware of when overclocking?
A lot hotter than you're going to be holding your phone at. I believe it's somewhere in the range of 50-60C for max temperature.
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Anyone have a good estimate of what the max safe temperature for the armv6 cpu is? I have setCPU configured to throttle back at 46 degrees, but could that limit be safely set higher?
STaria said:
Anyone have a good estimate of what the max safe temperature for the armv6 cpu is? I have setCPU configured to throttle back at 46 degrees, but could that limit be safely set higher?
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Curious about this too, I have mine at the default of 50 °C
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What I was able to find out in the past was that a mobile phone cpu could safely reach up to 80-90°C. The motherboard and/or components on the motherboard can start to fail around 65-70°C. And for a lithium-ion battery it's best to keep the temp under 50°C for longevity, 60°C is absolutely going to affect battery life. I was never able to find anything specifically on the armv6 or where exactly the temp sensor is on the Aria. I have setCPU configured to throttle back at 46°C, and I have the charging profile throttled back because of the heat generated when charging.
Just remember that the temps being monitored are the battery temps. The aria doesn't have the ability to measure actual cpu temps.
Sent from my cm7 Aria.
CallMeAria said:
Just remember that the temps being monitored are the battery temps. The aria doesn't have the ability to measure actual cpu temps.
Sent from my cm7 Aria.
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Right, so the CPU could probably take higher, but it's the battery that's the limiting factor.
I think I'll keep the profile as it is now, by the time the battery hits 46 that's hot enough. Don't need my Aria bursting into flames from thermal runaway.
wantabe said:
What I was able to find out in the past was that a mobile phone cpu could safely reach up to 80-90°C. The motherboard and/or components on the motherboard can start to fail around 65-70°C. And for a lithium-ion battery it's best to keep the temp under 50°C for longevity, 60°C is absolutely going to affect battery life. I was never able to find anything specifically on the armv6 or where exactly the temp sensor is on the Aria. I have setCPU configured to throttle back at 46°C, and I have the charging profile throttled back because of the heat generated when charging.
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Thanks for the info
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What's the purpose of overclocking and undervolting. What's the reason for the undervolting?
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It reduces CPU temperature and the amount of battery needed. It is especially useful when you overclock your CPU as both benefits are seen then.
Undervolting typically increases instability, unless it is also in conjunction with underclocking.
If you overclock, you might add voltage to keep the processor running higher than its rated speed. Similarly, if you drop the clock cycles, you may be able to drop voltage and run a cooler, more power-friendly processor.
I am currently underclocking to 768MHz on stock voltage.
Is that why with the speedtweak on 1.92 with the under volting makes the phone lock up.
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Likely. The only time I experienced frequent locks was when I was undervolted extremely. If you're running an overclocked and undervolted simultaneously you increase the odds that the cpu won't have enough juice to run properly.
Virtually every device will tolerate speedtweak's extreme undervolt/overclock to 1.41GHz with complete stability. Most will also remain stable running within stock voltage up to 1.222GHz. I've never been a fan of running with a hard cap on speed. Adjusting governor settings makes more sense. I'm also thinking underclocking and using HTC stock voltage scaling is a waste since the CPU will definitely remain more stable at more extreme undervolting at those speeds. Some kernels will run well with a minimum voltage of 650.
Hi, I've got an annoying problem...
As far as i know the first thermal threshold for kicking down the CPU freq to 800MHz is set to somewhere around 80oC in SGS3. But in my case it kicks in after achieving just 51-54oC which makes some games unplayable after 5 mins
I've read somewhere that the battery temperature (45oC or so) is also considered when throttling down the CPU frequency, but my battery hits just 41oC when it happens...
Could it be a faulty temperature sensor(s) or just faulty almost 2 years old battery? I have no more clues, could anybody help?
Thanks a lot!
flither said:
Hi, I've got an annoying problem...
As far as i know the first thermal threshold for kicking down the CPU freq to 800MHz is set to somewhere around 80oC in SGS3. But in my case it kicks in after achieving just 51-54oC which makes some games unplayable after 5 mins
I've read somewhere that the battery temperature (45oC or so) is also considered when throttling down the CPU frequency, but my battery hits just 41oC when it happens...
Could it be a faulty temperature sensor(s) or just faulty almost 2 years old battery? I have no more clues, could anybody help?
Thanks a lot!
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That's tricky... Afaik you CAN change some system files to avoid throttling but I don't believe that that would be healthy... Your temperature sensors could also be faulty... I don't know
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yeah, but is it possible that it's throttling down on such normal temperatures? Or maybe there's another safety mechanism involved (dunno, maybe GPU temp sensor)? But my GPU runs on stock freqs and voltage...also it doesn,t matter if i'm undervolted on CPU or not, still the same
flither said:
yeah, but is it possible that it's throttling down on such normal temperatures? Or maybe there's another safety mechanism involved (dunno, maybe GPU temp sensor)? But my GPU runs on stock freqs and voltage...also it doesn,t matter if i'm undervolted on CPU or not, still the same
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I don't actually know... I've never faced throttling problems so i don't know what else can cause this.. Perhaps there is something else involved...
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SOLVED
After a really deep search I found out that Sammy based roms have a CPU throttle after battery reaches 41oC...now to change it
GT-I9100 International
Is there any rom / kernel you could recommend for top output for 24hour constant calculation. (Specifically the "boinc" app)
I would like max CPU output and i wouldn't want heat throttling since temperature and battery wont matter.
also freezing would suck since i probably wont be looking at it much so i might not notice for a few days.
Also i have a stock battery and stock charger (eu 210). I wouldnt want the drain to overpower the charger leading to downtime.
Ive got neatrom with the roms included kernel but it seems to lower cpu frequencies quite aggressively.
thinking about slimsaber
also with most governors i was getting 800mhz which was kind of annoying. Performance gov would reduce to 200 after a while, i believe because of heating.
Finally slp stays at 1200 and doesnt seem to downclock. Still i feel there is room for improvement.
There's something odd with Snapdragon 625 on RN4 (according to me).
I have noticed that the maximum clock is half of the times coming down to 1.6GHz or less instead of 2.0GHz, especially when charging when the phone is warm (but temperature isn't high enough to trigger down clocking-- around 30-40 degree Celsius).
This also happens when the phone is not charging and I am doing some task like using apps or playing games when the phone's hardly heating up (afterall, SD 625 is known for its no heating issues).
It looks like whenever I am doing some task that doesn't involve much processing, the max clock comes down (but when I am performing some CPU intensive task such as installing an app, the max clock stays at 2GHz).
I am using interactive governor. PLEASE NOTE THAT I AM TALKING ABOUT THE MAXIMUM CPU CLOCK WHICH IS AFFECTED IN MY CASE. Using Kernel Adiutor to reset max freq. to 2GHz hardly works. It seems like the system ignores my clock settings. Even if i set the governor to performance, the max clock still keeps coming down and going up.
What's the deal with this processor?
Also, all the 8 cores are ALWAYS ON. There's no option for CPU hotplug in Kernel Adiutor.
Please someone shed some light over this.
CPU is thermal throttling not only when CPU is hot, but also when battery is hot. Also it is using a frequency which it needs, if it's using 1.6ghz it means it doesnt need more for whatever you have been doing.
k3lcior said:
CPU is thermal throttling not only when CPU is hot, but also when battery is hot. Also it is using a frequency which it needs, if it's using 1.6ghz it means it doesnt need more for whatever you have been doing.
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It also happens when the phone is not warm/hot.
Please note that I'm not talking about the current frequency that is being used, I AM TALKING ABOUT THE MAX FREQ that is pulled down and up when I am working (even when just simply using the phone for little tasks which doesn't really heat the phone up).
While using any governor, the max freq should stick to what it is set to and the current freq varies. But here, the max freq is varying along with the current freq. Is this some feature or what?
If this is actually due to heating, is the management so bad that even 35-40 degree celsius makes the CPU throttle? Generally throttling happens at much higher temperatures.
This is 14nm SoC, it has much lower temperatures but also much lower max temp. (throttling start on lower temps)
You can't heat up this CPU to 60C or more like Snapdragon 8xx for example, because it will shut down.
k3lcior said:
This is 14nm SoC, it has much lower temperatures but also much lower max temp. (throttling start on lower temps)
You can't heat up this CPU to 60C or more like Snapdragon 8xx for example, because it will shut down.
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LOL means I can't make good use of the 2GHz 8 core CPU for long because it'll heat up and simply throttle down. That's too stupid to have a powerful processor.
i am having heating issue. I found no thread discussing.. I am in Miui9 global beta version. Rooted withMagisk using redwolf twrp. My top part of screen heats in normal usage for 5 minute in wifi/data.I have checked the cpu temp( maximum 42) and battery tem( 36 to 38)..But the screen become hot..any work around? Is it a software or hardware issue? how to resolve it