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Does the default HTC kernel scale cpu frequencies?

Hey guys,
I was playing around with SetCPU last night and I was wondering - do the default kernels scale the frequencies based on need or do they always sit at 1.3 or 1.56 ghz, depending on whether it's the original or the XE?
just curious, i've always wondered this
thanks,
zuka

Generally CPUs will work on a scale process, if they did not, you would notice your phone would he consistently hot and overheating from the constant maxed out use of your CPU. the controllers will undervolt your CPU (essentially lowering the voltage passing through) to save battery life and some will even act as a governer to prevent your CPU from getting too hot or maxing out and overheating your phone.
Sent from my HTC Sensation XE with Beats Audio using XDA App

What temperatures are acceptable for overclocking?

My sensation is currently overclocked at 1.73ghz, and according to a temperature widget I have it seems to hover between 25-45 degrees. I can only find the one temperature reading, so I think this will be the battery temp. I've set setCPU up to run at 1.73ghz below 35 degrees, then come down to 1.5ghz above it. If it gets to 50 degrees, it's then set to drop to absolute minimum and play a warning sound. I've also set it to drop to minimum when the screen is off to save power if the phone doesn't sleep, and to not exceed 1.2ghz when on charge or during a call. None of them are fixed, they're set to intellidemand or whatever it's called.
Do these settings sound reasonable? What sort of temps would be deemed as normal? I don't want to shorten the life of the phone if I can help it.
Also, if this temperature reading is just for the battery, what would I need to monitor CPU temperature too? Is there an app available so I can actually log the temps to see what happens when playing games, etc?
Sent from my HTC sensation using Tapatalk

Anyone?
Sent from my HTC sensation using Tapatalk

System tuner pro shows CPU temperature and does logs.
Matt

Cheers, I'll give it a try.
What sort of temperatures are acceptable before I risk the CPU's lifespan?
Sent from my HTC sensation using Tapatalk

Why do you need these over clock speeds? They will only ultimately increase temp, burn excessive battery and reduce the life span of your device.
Use common sense, these speeds are only worth using for bench mark tests
Personally anything above 43 is to hot for my device, although not same as yours, you can use set CPU to throttle down at this temp
Swyped from my Desire S using XDA Premium

I mainly wanted to overclock since the normal sensation was underclocked in the first place, the sensation xe runs at 1.5ghz and the CPU is the same. So I wanted at least that. What I'm wanting to do now is find how quick it can be before it starts running too hot. Just wondering what's considered too hot in the first place.
Sent from my HTC sensation using Tapatalk

My web browsing is much better (faster and smoother) at higher clockspeeds and performance governor. So that's why I run higher speeds. I use my phone for internet stuff more than anything else.
matt

Mine seemed smoother too, for normal use and for my emulators. I found a problem though, setCPU wouldn't let the phone sleep so my battery went from 85% to dead overnight! It also seemed a little unstable even when turned back down to 1.53ghz, so I've uninstalled it and it's now running 1.53ghz just from the kernel. Runs perfectly now and battery life is back to normal. No noticeable difference in performance going from 1.73ghz down to 1.53ghz either, but now the battery temp seems to top out at 35-40 degrees or so, so about 5-10 degrees less than when it was set higher. I'll still give that app a go though so it can monitor and log temps while I'm playing games, etc.
Sent from my HTC sensation using Tapatalk

Using overclocked kernel brings some heating.

Hi all.
Im using SebsstianFM 1.5 GHz kernel on my sensation . It becomes warm and heats my fingers, so I can't resolve is this an issue. I thought before that htc sensation has the same chipset in both xe and non-xe series. Hasn't it?
Perhaps Im unlucky one with the specific cpu or some heating is normal?
Thanks a lot in adv

Every processor is different, some can handle higher clockrates than others. Try underclocking it.

Thanks, I do.
But I'm sad a bit when informed about new Sebastian 1.7 GHz kernel. As for me 1.3 is the far frontier..

garryveda said:
Thanks, I do.
But I'm sad a bit when informed about new Sebastian 1.7 GHz kernel. As for me 1.3 is the far frontier..
Click to expand...
Click to collapse
try it without charger for a while, the chips are made for 1512MHz
it can get hot for me when running on 1512 but only with charger

For me 1.5 GHz was OK, only got "hot" when I played 3D games like CS and FIFA, but I Find the 1.35 GHz a bit friendlier for the battery (and at the clock the phone very rarely gets hot).

No prob here with Sebastian's V1.30.1 @1.5ghz yet again all chips handle every frequency in a different manner
Sent from my HTC Sensation Z710e using Tapatalk

How hot is hot? Am using using bricked 1.6 for aosp and I o/c to 1.9 Ghz to run benchmarks. After 10 minutes set at performance my battery hit 80° lol. Good benchmark scores tho.
Daily I use 1.56 Ghz and all is fine, wish I could o/c to 2ghz tho, just for the sound of it
sent from my Sensation XE

I didn't realize installing Sebastian's kernel would overclock me to 1.7GHz. My Senny is cooking over here. Anyone know where I can find the stock kernel? Or should I just slow it with SetCpu?
NVM...found it!

As for mine one it is really hot. Phone got 50 degrees within five using minuites while 1.5 GHz running. Though it is quite cold when used usual way like the calling, messaging etc. But anytime I load it with real tasks like playing 3d games, shoting videos it becomes hot and not suitable to use.
So 1.3 is my top...

Overheating for me is usually because of the app. Poorly built apps can cause overheating. My phone overheats even with the stock HTC 1.2GHz kernel when playing certain games.

Use SetCPU as a govenor to set the processor automaticly back to 1,2 Ghz when overheating.

I guess my processor is one of the luckier ones, I'm getting 1.72GHz under volted with no problems At the end of the day the Sensation was 'designed' to run at 1.22GHz so anything above is a bonus

You should be glad your phone doesnt blow up...as far as i see it, 1.7 ghz speed is so much closer to the netbook laptop processor speeds we get these days. these netbooks come with built-in exhaust fans to avoid heating up of the processor.
The sensation does not have such hardware builting, so its better not to overclock it too much or you might end up with a burnt up phone.

ARHD rom has a stock kernel , U can try it :d

Situation has chanched since I got updated with ARHD 6.5.3. For now I'm using 1.6 SebastianFm kernel with no prob.
Phone is comfortable with its temperature even when hard tasks running.
I don't know whether the new ROM is brilliant or the weather becomes more warm causing not to feel device heating with my fingers.
The fact is that issue has gone and I'm happy

sensation & sensation XE cpu chipset comparison

i'm sure this has been asked before but i just want to make sure. both the sensation and the XE have the same cpu chip but the XE chip is O/C'd to 1.5 ghz, correct? meaning i can O/C my sensation to 1.5ghz and run it daily without any worries of shortening its life? also, what is the max frequency this chip can handle, safely?
HTC|Sensation|Cambodia

swift2fly said:
i'm sure this has been asked before but i just want to make sure. both the sensation and the XE have the same cpu chip but the XE chip is O/C'd to 1.5 ghz, correct? meaning i can O/C my sensation to 1.5ghz and run it daily without any worries of shortening its life? also, what is the max frequency this chip can handle, safely?
HTC|Sensation|Cambodia
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The normal Sensation is in fact underclocked, so by clocking it to 1.5 you are releasing its ability.
As far as the Max is concerned, mine tops out @ 1.72 before I start getting problems (shutdowns and VERY warm handset)
Remember every chip is different so what is good for me may not be good for you, or you may even be able to go to 1.8!!!

mrew42 said:
The normal Sensation is in fact underclocked, so by clocking it to 1.5 you are releasing its ability.
As far as the Max is concerned, mine tops out @ 1.72 before I start getting problems (shutdowns and VERY warm handset)
Remember every chip is different so what is good for me may not be good for you, or you may even be able to go to 1.8!!!
Click to expand...
Click to collapse
thanks for the info. i can OC up to 1.83, anything after that my phone would just reboot. if the chipset is underclocked ive been underclocking it even more to 1.18.
HTC|Sensation|Cambodia

The Sensation and Sensation XE use identical hardware - just with the case of the Sensation, as pointed out by the previous post, is underclocked - the Sensation XE is just clocked higher, has had a lick of paint and been covered in Beats gimmicks. Which is pretty worthless if you're flashing ROMs anyway.
When it comes to overclocking, any form reduces the lifespan of components, but not to any sort of level that you should be losing sleep over. You should just play around with clock speeds and get the balance between speed and stability you're looking for. As pointed out in countless threads, every CPU is slightly unique, so some can take higher clocks than others, whilst some can only just make the 1.5GHz mark, or so I have read.
If you do go over 1.7GHz, it is probably worth keeping an eye on any excess heat being kicked out. Overclocking does have a slight degradation on battery life, but it's heat you should be wary of. Heat is the death of electronics, and warranty doesn't cover overclocking (although, if you are overclocking, you're rooted, so your warranty is void anyway ).
Just don't go mad. In my opinion, it's definitely worth bridging the gap between the Sensation and the XE by bolstering it up to 1.5 GHz, but after that point, it becomes more of a benchmark game - which don't really mean anything anyway. Clock speed isn't everything - it's more down to the architecture of the CPU more than anything.

Pash. said:
The Sensation and Sensation XE use identical hardware - just with the case of the Sensation, as pointed out by the previous post, is underclocked - the Sensation XE is just clocked higher, has had a lick of paint and been covered in Beats gimmicks. Which is pretty worthless if you're flashing ROMs anyway.
When it comes to overclocking, any form reduces the lifespan of components, but not to any sort of level that you should be losing sleep over. You should just play around with clock speeds and get the balance between speed and stability you're looking for. As pointed out in countless threads, every CPU is slightly unique, so some can take higher clocks than others, whilst some can only just make the 1.5GHz mark, or so I have read.
If you do go over 1.7GHz, it is probably worth keeping an eye on any excess heat being kicked out. Overclocking does have a slight degradation on battery life, but it's heat you should be wary of. Heat is the death of electronics, and warranty doesn't cover overclocking (although, if you are overclocking, you're rooted, so your warranty is void anyway ).
Just don't go mad. In my opinion, it's definitely worth bridging the gap between the Sensation and the XE by bolstering it up to 1.5 GHz, but after that point, it becomes more of a benchmark game - which don't really mean anything anyway. Clock speed isn't everything - it's more down to the architecture of the CPU more than anything.
Click to expand...
Click to collapse
thanks for the info. i dont plan to over do it. i recently installed GTA3 and it was running slow and choppy so i set my cpu to 1.5ghz and cpu governor to "performance" and it runs the game smoothly. just wanted to make sure that its ok to run it at 1.5 for a long period of time. i dont really have a reason to clock my cpu any higher. if anything i'd just stick to 1.18 just for battery consumption reasons.
HTC|Sensation|Cambodia

[Q] Sensation overheating : Replace Snapdragon S3 msm8260 on the main PCB

Hi guru,
Need some advice on Sensation hardware and its CPU.
I am using CM ROM 9.1 with Universal firmware 3.33 in the search of find a good ROM which does not over heat my CPU
All of a sudden the CPU chip on the main PCB is heating up and sometimes the phone reboots within 5 Mins.
The temperature after 5 mins of phone starting up ranges from 58C to 67C and the Phone's bottom keeps getting very hot.
I have tried to maintain maximum CPU as 1.18 MHz and minimum CPU as 384 Hz and I have not touched the voltages at all. The CPU Gonvernor is set to conservative.
I need some advice on
1. I fear something is wrong with the CPU Hardware. Is there some way I can replace my CPU with a new msm8260 CPU. Is it possible to
remove the CPU from the main PCB.
2. Any other way to fix this? Any scope of troubleshooting possible

In my case was the baterry,replaced with 1800mAh and no overheating with cpu speed up to 1.7Mhz...

Vipers 3.1.2 is the best on low heat in my opinion. 1.6.3 ics version is not good though
Sent from my HTC Sensation Z710e using xda app-developers app