Database Info

[Q] Is this okay for me to do?

First off:
Rom:
Virus rom RC1B3
Kernel:
1.8ghz bolted BFS uv kernel
if you overclock, your battery life is less. more power = more usage
so, in theory, if you underclock, less power = less usage..
when I'm at work, I barely use my phone. Maybe to text or a call here and there..
So I wanted to improve my battery life as much as I could,,, I have SetCPU and I have the minimum at 350mhz and the maximum at 650 using the smartass governor when not in use.. Since this is underclocking, the battery life has improved drastically,, though is it safe? I don't see any reason why not, just though I'd like some input on it.

Yeah, you're fine. With the Smart-Ass governor you don't really need to underclock. It's called smart-ass for a reason. It will only use as much is needed. So when your phones screen is off not running any tasks, the governor will underclock itself.

Another thing to add is if you are using SetCPU, then you really do not need to set up any profiles that would underclock the phone if you are using smartass.

[Q] Undervolting - Will it reduce device temp?

Right so my phone can get pretty hot some times and I was just wondering if I undervolt it will it reduce the heat of my phone?
Also how much difference does UV actually show

It can't, because you can undervoltage not much or your phone won't be stable anymore.I think the easier way is to downclock your cpu speed.

likuku said:
It can help in term of technical, but in actually at the rate you can see the different of it.I don't think your phone will still stable or functional.
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That's really hard to understand what you're trying to say...
Sent from my HTC Sensation 4G using XDA App

likuku said:
It can't, because you can undervoltage not much or your phone won't be stable anymore.I think the easier way is to downclock your cpu speed.
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Galaxa12 said:
That's really hard to understand what you're trying to say...
Sent from my HTC Sensation 4G using XDA App
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He means that you can use an app like SetCPU to underclock or lower the clock frequency of your phones CPU, this will leave you a slower but cooler phone.

yes, if you undervolt you reduce cpu "power consuption" as equally as how many volt you decrese.. but.. if you undervolt too much, you lose cpu stability, so, if you undervolt you have to underclock, the same for overclock, if you overclock you may overvolt
it's different for all peoples, some users could have a better cpu (with less impurity), it can be overcloccked better with less overvolt, some can have a bad cpu chip, it means they have to overvolt so much for a little overclock
i have a sensation normally with -75mV undervolt and stock clock, it's stabe, so, am i lucky?

Temperature is a function of voltage + clockspeed. It is recommended you stay at 1.2ghz for good balance b/w performance, temp, and battery consumption.
To easily find your optimal voltage threshold, globally undervolt in stages of 12.5mv until your phone because unstable. Then increase it by 1 stage and that is the optimal voltage your phone should be running at.
Of course you can even go as far as tweak voltages at different clock speeds. Usually there is much more room to UV the lower clocks (192 and 384mhz around 800 or 812.5mv) than the higher clocks.
Hope this helps

iba21 said:
yes, if you undervolt you reduce cpu "power consuption" as equally as how many volt you decrese.. but.. if you undervolt too much, you lose cpu stability, so, if you undervolt you have to underclock, the same for overclock, if you overclock you may overvolt
it's different for all peoples, some users could have a better cpu (with less impurity), it can be overcloccked better with less overvolt, some can have a bad cpu chip, it means they have to overvolt so much for a little overclock
i have a sensation normally with -75mV undervolt and stock clock, it's stabe, so, am i lucky?
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Getting a Poco x3 pro soon and thinking about undervolting could you add me on discord and help me? If so add Gokn#4488

Undervolting/Underclocking

So recently I've become too lazy to constantly charge my Captivate and began to experiment with undervolting/underclocking it. Has anyone found optimal voltage for battery life? I've currently got every step of 200mhz down 100 volts and underclocked to a max of 800mhz. I'm on Semaphore kernel 2.9.5sc.

freshlimes said:
So recently I've become too lazy to constantly charge my Captivate and began to experiment with undervolting/underclocking it. Has anyone found optimal voltage for battery life? I've currently got every step of 200mhz down 100 volts and underclocked to a max of 800mhz. I'm on Semaphore kernel 2.9.5sc.
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There isn't a optimal setting as all phones act different. Testing is the best you can do.

which cpu governor are you running? that may have more effect than underclocking/undervolting on battery life.
user Stempox has a nice post on cpu governors here
http://forum.xda-developers.com/showthread.php?p=28647926
the screen on time and data/gps traffic, and apps that keep the phone awake, do more to effect power drain than other factors. so, if you manage those, and choose the governor that suits you preferences, then undervolting and underclocking aren't needed, IMHO.
you can tweak the governor settings with Semaphore manager, if you really want to do that too.
the thing is, you may end up keeping the screen on longer than you would at higher cpu speeds, which would counter any battery savings. also, undervolting can increase the error rate, which means further delays while phone is awake.
hope this is helpful in your pursuit of fewer charging cycles.
Sent from my SGH-I897

Performance or battery

Switching between different kernels and ROMS I have some doubt.
There are some that extends battery life but clock speed it's normal but there are others that I've seen that clockspeed go over 3 GHz. It's really that bad that it's always above the 2.26GHz (normal)? Or it's only a matter that you'll have to charge more frecuently? It's not bad for the phone right?
(Clockspeed values seen with CPU-Z app)
Sorry for my english and thanks

Ex1a said:
Switching between different kernels and ROMS I have some doubt.
There are some that extends battery life but clock speed it's normal but there are others that I've seen that clockspeed go over 3 GHz. It's really that bad that it's always above the 2.26GHz (normal)? Or it's only a matter that you'll have to charge more frecuently? It's not bad for the phone right?
(Clockspeed values seen with CPU-Z app)
Sorry for my english and thanks
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mmmh, well there can always go something wrong(especially when you're changing the voltage), but changing the frequence isn't so bad.
addicionally the processor isn't actually powering up to the highest frequence all the time..
by the way 2,3gHz should be enough right?

I'm running elemental x kernel and I have my CPUs under clocked and undervolted 14xx, 17xx,17xx and 19xx. Undervolted 50mv to each step I only get the slightest lag at boot up then the phone is fine and very very good battery life . Over volting and over clocking can stress the CPU and battery also undervolting to much can to kinda a fine line were is good and bad.

Underclocked Kernel for our phones?

Wondering if someone know any kernel that has energy "savings" parameters such as underclocking cpu(phone is quite fast itself and to be honest as a daily driver some users rarely use more than 30% of it's actual power), energy saving profil, underclocking gpu
Surely you can underclock stuff for yourself and after a restart an app to force those lower clocks but why not having a kernel that has all these so you'll have better battery life and be done with tweaking?
What are your thoughts people?