Htc 820 Undervolt and Overclock? - Desire 820 General

Hello, is undervolting and overclocking possible on htc 820u? I did not find any threads about it. Unfortunately setCpu app does not seem to be working and i tried many similar apps. Anyone has an idea about it? I wanted to undervolt my device to minimise battery consumption.
Details:
htc 820u
lollipop
rooted
bootloader unlocked

For this you need a custom kernel.

Okay thanks for your reply. are there any custom kernel for the htc 820u? and will it get in the way if i get updates for my phone later? i mean if i will have to look for a stock kernel to be able to do updates ect..

Vivacity said:
Hello, is undervolting and overclocking possible on htc 820u? I did not find any threads about it. Unfortunately setCpu app does not seem to be working and i tried many similar apps. Anyone has an idea about it? I wanted to undervolt my device to minimise battery consumption.
Details:
htc 820u
lollipop
rooted
bootloader unlocked
Click to expand...
Click to collapse
HTC has an inbuilt power applet for this device which actually does the cpu scalling. Use EXT Saver from Power settings, it will lower your cpu core and speed.
Overclocking: this device already fast enough. Overclocking will increase battery consumption and heat.

tomal said:
HTC has an inbuilt power applet for this device which actually does the cpu scalling. Use EXT Saver from Power settings, it will lower your cpu core and speed.
Overclocking: this device already fast enough. Overclocking will increase battery consumption and heat.
Click to expand...
Click to collapse
yess definitely it is fast enough. i used the EXT saver but i just wanted a little more tweaks. Like setting maximum and minimum cpu power. what do you think about it?

Related

[Q] Real world noticeable benefits of Over clocking G2?

Hey,
So I'm on the fence about perma rooting and over clocking my G2, but i have a few questions:
1) Will my battery life suffer greatly due to over clocking say to 1Ghz or 1.4Ghz?
2) Are there any real world noticeable real world performance gains besides benchmark scores?
3) Will perma-Rooting it decrease performance? (Back when i had the mytouch 3g, the phone never felt as snappy after i rooted and installed custom roms, as compared to stock).
Thanks
1) battery life is the same if not better when overclocked with setcpu in ondemand mode at 245/1100mhz
2) there is a definite performance increase
3) custom roms can decrease performance depending on the rom and ui (sense is a bit heavy). Just simply rooting will not decrease performance. Also, CM6.1 is super snappy, especially using Launcher42
DO IT!
Sent from my T-Mobile G2
thedarkpassenger said:
1) battery life is the same if not better when overclocked with setcpu in ondemand mode at 245/1100mhz
2) there is a definite performance increase
3) custom roms can decrease performance depending on the rom and ui (sense is a bit heavy). Just simply rooting will not decrease performance. Also, CM6.1 is super snappy, especially using Launcher42
DO IT!
Sent from my T-Mobile G2
Click to expand...
Click to collapse
Launcher42? that's a heck lot of upgrade from Launcher2 I'd like to check it out
but he's right overclocking is not going to eat up your battery much. Heavy graphic ROMs do however suck up battery and performance. I personally like to stick to rooted stock roms and tune up here and there to fit my personal needs.
You should however read carefully and make sure to understand every steps you're doing if you want to root your phone.
androidtoy09 said:
Launcher42? that's a heck lot of upgrade from Launcher2 I'd like to check it out
but he's right overclocking is not going to eat up your battery much. Heavy graphic ROMs do however suck up battery and performance. I personally like to stick to rooted stock roms and tune up here and there to fit my personal needs.
You should however read carefully and make sure to understand every steps you're doing if you want to root your phone.
Click to expand...
Click to collapse
thedarkpassenger said:
1) battery life is the same if not better when overclocked with setcpu in ondemand mode at 245/1100mhz
2) there is a definite performance increase
3) custom roms can decrease performance depending on the rom and ui (sense is a bit heavy). Just simply rooting will not decrease performance. Also, CM6.1 is super snappy, especially using Launcher42
DO IT!
Sent from my T-Mobile G2
Click to expand...
Click to collapse
Alright I'm going to give it a shot later tonight probably, i forgot about the SETCPU profiles where you can have the phone under clocked while the screen is off. That should definitely give me better battery life. Ill be back to post results
kcm117 said:
Alright I'm going to give it a shot later tonight probably, i forgot about the SETCPU profiles where you can have the phone under clocked while the screen is off. That should definitely give me better battery life. Ill be back to post results
Click to expand...
Click to collapse
Good luck and I'm sure you will enjoy your G2.
Oh, and don't forget to show it off to your friends. Let them see how this thing "Fly"
I oc to 1.4+ with setcpu and a few profiles set up i get much better bat life then stock. Im also running a sense rom which feels sluggish until you oc. At 1.4 it runs smooth as can be with live wallpapers plus all the pretty sense animations. The only problem i have is i hate the sense dialer and msg system also i want to change the "personalise" tab....do people really change theyre settings everyday that they need a dedicated button for it? Anyway i digress
Sent from my HTC Vision using XDA App
Excuse me, since when does increasing the clockspeed of your CPU INCREASE battery life?!
convolution said:
Excuse me, since when does increasing the clockspeed of your CPU INCREASE battery life?!
Click to expand...
Click to collapse
No, that's not entirely true BUT with SetCPU you can profile it with different mode which can benefit the battery life.
kcm117 said:
Hey,
So I'm on the fence about perma rooting and over clocking my G2, but i have a few questions:
1) Will my battery life suffer greatly due to over clocking say to 1Ghz or 1.4Ghz?
2) Are there any real world noticeable real world performance gains besides benchmark scores?
3) Will perma-Rooting it decrease performance? (Back when i had the mytouch 3g, the phone never felt as snappy after i rooted and installed custom roms, as compared to stock).
Thanks
Click to expand...
Click to collapse
I don't notice any difference in battery and I have the 1.9ghz kernel. I normally keep it at 1ghz though. I enjoy it overclocked. My games run incredibly smooth, when navigating my phone it literally almost feels like it knows what i'm pressing a split second before i do and benchmarks rape the face off anyone else I know with an android phone. It's just sooo smooth. It really boils down to being the kind of person who likes to hold a powerhouse of a phone in the palm of their hand. (Literally) with even just the 1.4ghz OC you'll never have to ask yourself "can my phone run this without being sluggish?" because the answer is yes, it can probably even run two or three instances of whatever made you question yourself in the first place without being sluggish. Any if you're worried about custom roms from the past, just remember how outdated your old android is compared to this one. No offense because I can relate, I used to have a G1 that is now a hand-me-down to my brother and whenever he asks me to mod something on it, I'm just amazed at how slow it is and really don't know how I tolerated it for the last 2 years. I mean I'd score a 150 quadrant on the G1 (on a good day) but with my full OC on, the G2 scores 3000~3100. That's roughly 20 times faster...
Bottom line is that you won't need to worry about "will this make my device sluggish?" for quite some time.
Hey
Alright guys i got the phone perma rooted now, but i havent installed an OC kernel yet, two questions.
-Which kernal should i install if i want 1.4Ghz? there seems to be two threads with 1.4ghz kernels
-Do i need to install Bacon Bits for the kernel?
kcm117 said:
Alright guys i got the phone perma rooted now, but i havent installed an OC kernel yet, two questions.
-Which kernal should i install if i want 1.4Ghz? there seems to be two threads with 1.4ghz kernels
-Do i need to install Bacon Bits for the kernel?
Click to expand...
Click to collapse
just install cm6.1 and setCPU and you will be fine, then you can tweak it up to 1.42 if you like or whatever you want it at
Any heat related issues? Let's say I get into a zone and play some graphics intensive game 6 hours straight on USB power at 1.4Ghz? Wouldn't that put out more heat then the G2 was design to handle possibly shortening its life span?
convolution said:
Excuse me, since when does increasing the clockspeed of your CPU INCREASE battery life?!
Click to expand...
Click to collapse
It doesn't. However, overclocking is misnomer. What we really mean is over and UNDER clocking. For example with SetCPU is can create a profile that greatly slows down my CPU when the screen is off. This saves the battery a lot, since my screen is nearly always off.
Also, I can create profiles that slow down the CPU as the battery lowers in order to offset the fact that I overclock the CPU when the battery is fuller.
manvstech said:
Wouldn't that put out more heat then the G2 was design to handle possibly shortening its life span?
Click to expand...
Click to collapse
Probably could shorten the life span. I keep phones for a year or two, though, and shortened life span for me isn't an issue. The phone becomes outdated before the CPU gives up.
cparekh said:
It doesn't. However, overclocking is misnomer. What we really mean is over and UNDER clocking. For example with SetCPU is can create a profile that greatly slows down my CPU when the screen is off. This saves the battery a lot, since my screen is nearly always off.
Also, I can create profiles that slow down the CPU as the battery lowers in order to offset the fact that I overclock the CPU when the battery is fuller.
Click to expand...
Click to collapse
^This.
I've gone a full 10 hours with my battery still reporting 100%.
Sent from my HTC Vision using XDA App
my default sense rom does not feel sluggish at all.
this oc is not really required from my point of view. and it also does not increase battery. the thing what increased is the underclocking when screen is off.
and this you can do even without overclocking. and THEN it brings even more gain.
an example of "real world" for me is how well my g2 plays PSX games on the emulator. I have it overclocked at 1.5 on setcpu and it runs chrono cross pretty much flawlessly with no noticeable slow down.
i use setcpu for underclocking since i don't do enough just yet to overclock, i haven't noticed any battery increase just yet and i've been using it for a few days now. i almost questioned my self if i was losing battery life due to my system mhz always fluctuating? is this a possibility? i just added a profile for screen off 245/245 but i still had to choose on demand? what should i put there. thanks for ur help everyone
I installed the bacon bits 1.4ghz kernel and setup some setcpu profiles.....battery life is much better now.
Sent from my T-Mobile G2 using XDA App
screen off profile doesn't work with G2
noone has any proof it does change anything.
with or without widget running

SetCPU vs. CMSettings Built-in CPU manager

For those of you on CM7 (preferably RC2 or later nightlies), are you using SetCPU or the built in CMSettings CPU manager? Which is giving you better performance/battery life?
I can't help but think that the built in CM Settings CPU tuner is going to be conflicting with my SetCPU profiles.
Been using nightlies since #30 or so, and I currently run SetCPU with a normal profile, a screen off profile, and a profile for <10% battery and haven't touched CMSettings' CPU manager.
I'm contemplating just uninstalling SetCPU for a day or two and seeing what a 1017max / 245min Ondemand or Powersave governor via CMSettings ends up doing to my battery life considering there will be no screen off profile.
Any thoughts?
I dumped setCPU after a lot of testing (and even bought it on market)
I'm finding I'm much happier using inbuilt CPU settings. I think battery life is the same but performance is better due to the fact that SetCPU would sometimes get stuck in my screen-off profile when turned on causing the phone to be really slow.
I recomend uninstalling setCPU, set your ONDEMAND governor with ~1Ghz and run it... You'll find your battery about the same but much less hassle.
I have yet to try that, I somewhat feel obligated to use SetCPU since I purchased it lol. But it probably won't be the last time I waste money at the market.
Neither. CPU tuner works best for me.
Sent from my HTC Vision using XDA Premium App
Utorrent76 said:
Neither. CPU tuner works best for me.
Sent from my HTC Vision using XDA Premium App
Click to expand...
Click to collapse
its the same thing :facepalm:
Try the inbuilt one... I think its way easier
I've been wondering about this too. I don't quite understand how it works. Can I just set the frequency higher till a certain point without changing the voltage and get the same battery life?
What's the best way of doing this? Just change the clock speed or do I need to change something else or update the kernel?
Whatever you tell SetCPU to do, you'll see the same settings mirrored in the CM settings.
I say setCPU cuz as battery gets lower... I have my CPU speed lower also. Basically, 15% battery lasts me forever :] lol
Sent from my T-Mobile G2
DJAeroX26 said:
I say setCPU cuz as battery gets lower... I have my CPU speed lower also. Basically, 15% battery lasts me forever :] lol
Sent from my T-Mobile G2
Click to expand...
Click to collapse
Definitely. This is the one thing I like about SetCPU is having the 10% and 5% profiles so that I can get the last few % to last forever if I need it. Although in normal day-to-day use I'm never pushing it below 20%.
ScooterG said:
Whatever you tell SetCPU to do, you'll see the same settings mirrored in the CM settings.
Click to expand...
Click to collapse
Yea I see this, as far as the governor changing etc.. This is why I'm wondering if it would be easier on my phone to just run only the CM Settings one.
I notice that every 5th or so time I unlock the phone, there is an obvious lag switching from the screen off profile, and my unlock sliders jitter around and it takes 4-5 tries to unlock the phone. I think this is probably partially due to both settings switching over trying to change.
I think I might try backing up and uninstalling SetCPU for tomorrow to see how it goes.
colonelcack said:
I've been wondering about this too. I don't quite understand how it works. Can I just set the frequency higher till a certain point without changing the voltage and get the same battery life?
What's the best way of doing this? Just change the clock speed or do I need to change something else or update the kernel?
Click to expand...
Click to collapse
I've read on here that overclocking the Vision's CPU up to 1 GHz requires no over-volting, and in theory should not affect battery life (but not sure exactly where that information originates from). But there has been lots of debate on these forums on whether the SetCPU app helps or hurts battery life depending on screen-off profiles (underclocking to save battery) or its constant polling of the CPU clock (possibly killing the battery faster).
A kernel that supports overclocking is already part of the CM ROM. If you are on CM, you can just adjust the clock speed under Settings>CM Settings>Performance>CPU settings. Or set the CPU clock using an app like SetCPU. Choosing one method over the other is what is being asked/debated here. If you are on the stock ROM, you need to be rooted, flash a custom kernel that supports overclocking, then install an app such as SetCPU or CPU Tuner to set the CPU clock to your liking.
redpoint73 said:
I've read on here that overclocking the Vision's CPU up to 1 GHz requires no over-volting, and in theory should not affect battery life (but not sure exactly where that information originates from). But there has been lots of debate on these forums on whether the SetCPU app helps or hurts battery life depending on screen-off profiles (underclocking to save battery) or its constant polling of the CPU clock (possibly killing the battery faster).
A kernel that supports overclocking is already part of the CM ROM. If you are on CM, you can just adjust the clock speed under Settings>CM Settings>Performance>CPU settings. Or set the CPU clock using an app like SetCPU. Choosing one method over the other is what is being asked/debated here. If you are on the stock ROM, you need to be rooted, flash a custom kernel that supports overclocking, then install an app such as SetCPU or CPU Tuner to set the CPU clock to your liking.
Click to expand...
Click to collapse
I'm not sure about CM's kernel with the over-volting but I do know that Pershoots kernel can be overclocked to 979mhz without over-volting (Pershoot told me himself).
At 1.8Ghz, I find the temp settings in SetCPU very useful.
Vision rooted, booted and scooted
Daughain said:
At 1.8Ghz, I find the temp settings in SetCPU very useful.
Vision rooted, booted and scooted
Click to expand...
Click to collapse
Well obviously.... But why the hell would you ever need to be running at 1.8ghz? The fact that you are always using a temp-specific profile method should show you that consistent 1.8ghz isn't good for the phone...
Okay so I uninstalled SetCPU last night and I'm going to run just the CM Settings CPU manager all day to see how it goes. Running like this:
ONDEMAND governor
Min CPU: 245 mhz
Max CPU: 1017 mhz
On nightly #19 also.
Okay so its midnight almost, and I'm at 13hrs unplugged and 52% battery still. Pretty general/light use, phone is just as snappy and the lack of a screen off profile doesn't seem to effect battery at all. Liking it so far! very interesting to see the screen off profile not mattering much.
SetCPU for me. I like to have a temperature and charging profile, to prevent the phone from overheating. Even at 1ghz the possibility exists, nice to have a backup incase.
I'm thinking set cpu conflicting with the cm built in caused my ****ty running problems. I have not used setcpu since and been good so far
Sent from prison
tackleberry said:
I'm thinking set cpu conflicting with the cm built in caused my ****ty running problems. I have not used setcpu since and been good so far
Sent from prison
Click to expand...
Click to collapse
With multiple tries... If you change the settings on one, it cancels the settings on the other... Maybe it's because you had set on boot enabled on both?
im going to run the CM tuner and uninstall Setcpu and see how it runs. i never thought about this but i do get that lag when i turn my screen on sometimes. im gonna miss having the profiles but ill see how it runs over the coarse of a couple days.

[Q] Overclocking

Anyone else Trying CPU Tuner?
https://market.android.com/details?id=ch.amana.android.cputuner
OMG!!! I can't believe the difference it has made!!!!
What difference has it made? Does it let u overclock or what?
________________________________________________________________________
ZTE Blade - Rooted OC 729mh CM7 RC2 V nice
Advent Vega - Rooted OC 1.4gh - Corvous5 rom gorgeous smooth and qqqick
Iconia A500 - Rooted - HComb Sweet
From what I understanb, the A500 and other mobile devices are under-clocked at the factory to save on battery. The allows you to adjust the CPU up to 1Ghz. So, not really overclocking, but you will see a big difference.
So you have already done it?
Enviado desde mi A500 usando XDA Premium App
ithink2020 said:
From what I understanb, the A500 and other mobile devices are under-clocked at the factory to save on battery. The allows you to adjust the CPU up to 1Ghz. So, not really overclocking, but you will see a big dif
just so you know this app is not needed for our CPU to run at the full 1ghz. the CPU runs full speed when the system demands it by default. this app is more for setting profiles to extend battery life. if you use system panel or a similar app you will see that the CPU runs full speed when needed. CPU tuner seems to be a great app for extending battery life though, so thanks for the tip.
Click to expand...
Click to collapse
how fast have you gotten it?
ithink2020 said:
From what I understanb, the A500 and other mobile devices are under-clocked at the factory to save on battery. The allows you to adjust the CPU up to 1Ghz. So, not really overclocking, but you will see a big difference.
Click to expand...
Click to collapse
Wrong. None of the devices are "under clocked" at the factory. There is just no reason that your device needs to run at 100% speed 24/7, so the CPU and the OS scale the speed back if the device is idle. Just like a laptop or desktop PC.
so if honeycomb automatically scales back the CPU when its not need does that mean that this kind of app is really needed to save battery?
Sorry, I must have miss-read something some place and was understanding it incorrectly. All I know, is thing are running faster.
Thank you das7771 and geeknik for the info!
No apology needed. We are all here for help, info, reseach, and hacking. I learn something new every day myself.
codemansGT said:
so if honeycomb automatically scales back the CPU when its not need does that mean that this kind of app is really needed to save battery?
Click to expand...
Click to collapse
Depending on your preference. One thing this app will do is scale down your frequency according to the profile you select ,for example, if your battery is at 50% and you want it to last longer, than what it would at stock settings, you can create a profile for your CPU to run at a lower speed like 800mhz. That way your battery will last longer throughout the day if you can not charge it. You can set multiple profiles for different battery levels of your preference and have the cpu run at slower speeds to preserve battery. So if your anal about your battery state then it can be very useful. Becuase at stock settings the sytem will run at whatever the speed is demanded by the system. Whether it be the minimum or maximum processor speed.
I usually prefer performance over battery life myself so unless I am going on a long road trip or I am out camping I would not use it as I have no need, but every one is different.

[Q] Energy mode - maximum power

Hey guys,
can you explain the different energy modes please?
At settings -> power there are three energy modes:
maximum power, normal and save battery
What is the difference?
I have Android 2.3.3 with HTC Sense 3.5.
Greetz
What's the rom you are using ?
I think it's an underclocking feature: maximum power = maximum available CPU clock (stock frequency) = min. battery life.
I have RUNNYMEDE 0.82.401.1 - Android 2.3.5 - Sense 3.5 [v1.2]
Do you know this ROM and can you tell me the difference?
anyone idea???
Which is best Rom for battery
Sent from my HD2 using xda premium
anyone knows the difference between the options??
liquidx said:
anyone knows the difference between the options??
Click to expand...
Click to collapse
Isn't it self explanatory? Maximum power gives the best possible performance, normal is a compromise between battery life and performance and power saver gives the best battery life but worst performance.
I want to know the technical background of the options.
Is the CPU overclocked in max. power mode or what?
liquidx said:
I want to know the technical background of the options.
Is the CPU overclocked in max. power mode or what?
Click to expand...
Click to collapse
I doubt it's overclocked. More likely it's just running at the full 1ghz constantly.

Overclocking HTC Glacier MIUI 20330

I just updated my MIUI to a newer version and now I'm looking to get some extra power out of my phone, I was wondering whats a safe overclock speed and the best app for it. also I think I read some were that you can have the clock speed change say if the phone is locked and screen off? So I'm wondering if I underclock my phone when its idle will its save battery?
Well, you can use the virtuous oc daemon. Google it. Overclocking will drain your battery faster, but combining it with a little voltage tweaking might help. It depends on your chip, really.
If you want to go a simpler route try no-frills cpu control on the market. Its free.
I use setcpu, you can enable profiles and set them for different scenarios such as underclocking when the screen is off which seems like what you want to do
Nicgraner said:
I use setcpu, you can enable profiles and set them for different scenarios such as underclocking when the screen is off which seems like what you want to do
Click to expand...
Click to collapse
Setcpu is considerably slower than a daemon in terms of reaction time. Its also not free.
Sent from my Glacier using XDA

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