Database Develop

How much does overclocking affect the battery?

This is probably a stupid question but I'll ask it anyway. I've noticed my phone draining lately (or maybe it's not, I'm not quite sure what the battery life used to be xD), and I recently overclocked my phone to 1.25 GHz (my profile on SetCPU is ondemand), does overclocking affect the battery that much?
I run Froyo (rooted with wifi fix and the 1.25 GHz kernal)

I'm using an ultra low voltage kernal at 1ghz and haven't noticed a difference, if anything it seems like it's better.
I guess it probably largely depends on what kernal.

I've been overclocked for 4+ months. The first month before I rooted, I was getting around 16-18 hours on a full charge at the stock 550 speed. After I rooted, a lot depended on the rom (lesser so) and the kernel (more so). I think the best performance I got was on ChevyNo1's SS rom (2.1) with one of his kernels ... 40+ hours overclocked conservatively at 800. My first shot some time back with CyanogenMod got me 3 hours with the early Bekit kernels but the past several versions up through 5.0.8 I was getting about 30 hours clocked at 800 with a jdlfg kernel. Now on Froyo I'm getting close to 30 hours again conservatively at 800-1000 ... which on a 2.2. rom is more like 1200+ since its faster.
So, in short, my battery life has significantly improved while running faster than stock. But no 2 Droids are identical in terms of how a rom and/or kernel perform. With 2.1 roms my Droid seems to like jdlfg's kernels, while on 2.2 the P3droid kernels do good. But that's what I found out via a lot of trial and error, not anyone's post saying "You must try ______'s kernel (or rom) as its da bomb!"

I would like to include that the post above by "cvhovey" provides some valuable information that might interest you and suggest anyone untreated in this thread to read that post.
Using an application like SetCPU you can throttle down the processor speed when the screen is off, this reducing heat and gaining better battery life. This doesn't mean you will get better battery life if you use your phone all day and never turn the screen off. But is totally worth it because u feel like I'm getting awesome battery life, plus an amazingly fast phone because SetCPU will overall me to my personal preference of 1100mhz on demand.
The answer to your actual question depends on how well you set up your phone preferences according to what benefits you the most, and what method of adjusting processor speed. I only mentioned one here, there are mire ways than just an APK.
Sent from my Droid using XDA App

PetRiLJoe said:
Using an application like SetCPU ...
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1+ on that. But how one uses SetCPU can also make big differences, such as which governor is selected. SetCPU at 400-1250 with the Performance governor will essentially run at its highest speed all of the time (if I'm correct), whereas with the Conservative governor will ramp up from 400 to 1250 at a slower pace, or at a faster face with Ondemand.
This thread can give you some helpful tips: Battery Saving Techniques - Theories in Test

Alright, thank you for your help ^^

i used SetCPU and my phone had continuously reboots...
I just had to uninstall it..

Were you using profiles in any way? A specific ROM? I've had similar a experience with certain ROMs (specifically UltimateDroid).
Best guess is that it just didn't play nice with the modded kernel.
Sent from my Droid using XDA App

Overclock or not?

A few weeks ago when I still had my HTC Hero it was overclocked to 672Mhz (standard = 528Mhz). It gave me a little boost in performance on Froyo, also the batterylife wasn't decreased too much.
But with our N1 running on 1Ghz, will it give much difference when clocked to 1113/1152Mhz? And what about batterylife?
If SetCPU is used what are your settings then? Mine is currently running on stock speed, no SetCPU.

ZeppeMan said:
A few weeks ago when I still had my HTC Hero it was overclocked to 672Mhz (standard = 528Mhz). It gave me a little boost in performance on Froyo, also the batterylife wasn't decreased too much.
But with our N1 running on 1Ghz, will it give much difference when clocked to 1113/1152Mhz? And what about batterylife?
If SetCPU is used what are your settings then? Mine is currently running on stock speed, no SetCPU.
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I have my nexus one rooted and flashed to MIUI Rom and clock @ 690mhz I get way better battery power. Before I would only get 6hr to 8hr if lucky now I get from 9hr to 13hr depending how much I use it.

set to 1.13 ghz
then screen off to minimum 245mhz

josemedina1983 said:
I have my nexus one rooted and flashed to MIUI Rom and clock @ 690mhz I get way better battery power. Before I would only get 6hr to 8hr if lucky now I get from 9hr to 13hr depending how much I use it.
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So you underclocked it, what about the speed? It's not to laggy?

Nexus one can run reasonably smooth @ 600mhz and above. It might not open applications as fast as it will be @ 1GHz though.

i think 1Ghz is enough for n1
why do u want an overclock?
Sent from my Nexus One using XDA App

shreyas1122 said:
i think 1Ghz is enough for n1
why do u want an overclock?
Sent from my Nexus One using XDA App
Click to expand...
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I didn't said I want an overclock. It's allready very fast on 1Ghz (compared to my old Hero ), just wanted to know your thoughts about overclocking the N1.

im overclocked at 1152 mhz and profiles set for 245 max with screen off. Overclocking is nice because i like the snappiness but most people cant tell the difference between 998 mhz and 1152. its not needed to overclock but i think profiles help alot. just my two cents

Ok thx, I will try 1150Mhz and see (if it's stable and) what batterylife does. I'm also going to try underclocking.
I have my N1 only for a couple of weeks now and I must say, this phone is awesome. It's VERY fast compared to my old Hero. I remember when I was installing apps on my Hero it became very slow and couldn't do anything untill installing was finished. With the N1 you still can do things while installing apps without lag. The responsiveness and smoothness is also a lot faster. I loved my Hero Because it never let me down, ok it was all a bit slower, but it was getting there. Now with the release of Gingerbread (custom ROM) it became to slow for me and that's why I sold my Hero and bought the N1. It was very difficult to find one, because of the EOL (end of life). But eventually I found one and i'm very happy with it. The N1 is allready more 1 year old, but it still competes with the best phones out there.

I generally run overclocked at 1075MHz, which gives a good balance between battery power usage and processor power. My understanding is that a different voltage scaling method is generally used above 1075MHz, so power consumption will increase above that point.

Didn't knew the voltage would increase above 1075Mhz, will keep that in mind

ZeppeMan said:
Didn't knew the voltage would increase above 1075Mhz, will keep that in mind
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This is, of course, dependent upon how the kernel is constructed, but this is what I have generally found to be true.

Give us some feedback

I overclocked it too 1075Mhz when screen is on (screen off 245Mhz). Will give my thoughts in a day or 2.

Just report that my battery drain is almost the same as on stock settings. I think it drains a tiny bit faster on 1075Mhz, but nothing major. On the other hand, I don't feel it's faster on 1075Mhz then on stock speed. Only benchmarks give me performance increase.
I'm now on CM6.1.1 with stock kernel (cyanogen), I tried other kernels like Wilmonks kernel,.. Although it was more responsive, battery was going down even faster. I get best battery results with stock kernel.
Hard to choose
more speed = more battery drain
less speed = longer battery
I think I stay with the last option (less speed = longer battery), because Wildmonks kernel doesn't give me enough performance increase over the stock kernel on stock speed.

I have mine at 998mhz, but overclocked 1152 while plugged into power.
Either way, its so easy to play with the clock settings, i'd just have a play with a bunch of different settings if i were you.

liam.lah said:
I have mine at 998mhz, but overclocked 1152 while plugged into power.
Click to expand...
Click to collapse
I'd love a how-to fire that..
mind sharing the app?
Sent from my Nexus One

ZeppeMan said:
wanted to know your thoughts about overclocking the N1.
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Click to collapse
well my thoughts: underclock!
so you can watch movies on it all night!
Sent from my Nexus One

shreyas1122 said:
I'd love a how-to fire that..
mind sharing the app?
Sent from my Nexus One
Click to expand...
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You can use SetCPU to create profiles based on different circumstances.
Me, I have mine clocked to a max of 1075 and min of 245 with the screen on, 576 max / 128 min screen off, 998/128 charging (to reduce heat - overclocking while power is applied can make it silly hot), and a failsafe to clock down to 576/128 if the temperature gets over 50*C.
Fabulous app.

Correct me if I am wrong. When you use setcpu to "ondemand", the CPU speed can ramp up to max whenever necessary, otherwise the speed will tune down to min especially in standby mode. In that way, you can enjoy the advantages of overclocking and underclocking the CPU speed i.e. increasing performance when needed and saving power when not in use, right? When I loaded Rod's MIUI and Wildmonk's kernel, I can underclock down to 128Mhz and overclock up to 1.152Ghz. At the end of the day, I still have over 60% of power left after not so heavily use (some web browsing, checking email and listen some music). Overall, setcpu is a great app for me.

Cyanogen8

Cyanogen 8? Is this next? Or is this in the works? Also is 2.3.5 next and would it be numbered a different version when Ice Cream comes out? Also is anything coming from the devs to overclock to 800 yet?

cell2011 said:
Also is anything coming from the devs to overclock to 800 yet?
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It's been done. So very very few phones are even stable at 800, and those that could generally performed worse in benches at 800 than at lower clocks. Many of these devices bootloop above 700.

Cyanogen 8 will not come out yet since will most likely be ice cream sandwich. I am not even sure is 2.3.5 will even come out and no the devs can not overclock this device to 800mhz because is 768 is the limit of the processor. Most people's phones do not even run that smoothly at 768 anyways. If somehow the dev found a way to overclock it to 800 (impossible btw but this is just a what if kind of statement) since the processor can not handle 800 it would just overheat the thing and cause crashes.

Also, on a side note, this should not be in the Development section. This should be in general or Q&A

This belongs in Q&A for future reference.
CM8 will be next, obviously. It will be based on Ice Cream Sandwich, so no, it won't be in development until ICS is released to AOSP so that the CM team can start using that code. 2.3.5 is an update coming out soon for the Nexus S 4G that fixes wifi and network speed, as well as adding more secure NFC for Google Wallet. It won't really affect us when it is merged into CM7. ICS is expected to be Android 4.0, but it could be 3.5 if Google decides.
There is a kernel that goes over 800Mhz, but anything over 768Mhz can be unstable on some phones. I tried it and there were no real performance gains, but battery life was a lot worse. Performance was actually worse at the highest CPU clock, in my experience. Just stick with 768Mhz. It's stable and chances are that you can get even better performance at a lower clock. I get better battery and performance at 633Mhz. It all depends on each unique phone.

rizdog23 said:
Cyanogen 8 will not come out yet since will most likely be ice cream sandwich. I am not even sure is 2.3.5 will even come out and no the devs can not overclock this device to 800mhz because is 768 is the limit of the processor. Most people's phones do not even run that smoothly at 768 anyways. If somehow the dev found a way to overclock it to 800 (impossible btw but this is just a what if kind of statement) since the processor can not handle 800 it would just overheat the thing and cause crashes.
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I lol'd at this statement. Did you not read any of the posts above you?

When i began to post there were no posts yet. They must have got posted while i was typing. So seeing as the only post at the time was the op, then yes i did read the post(s) above mine.....

There is a kernel that goes over 800Mhz, but anything over 768Mhz can be unstable on some phones. I tried it and there were no real performance gains, but battery life was a lot worse. Performance was actually worse at the highest CPU clock, in my experience. Just stick with 768Mhz. It's stable and chances are that you can get even better performance at a lower clock. I get better battery and performance at 633Mhz. It all depends on each unique phone.
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I can confirm that the Godmode kernel was able to push some phones, such as mine, past 800Mhz. Although I had a faster processor speed, my battery would drain incredibly fast as well as overheat. Even though I never hit a bootloop with the kernel, the battery life, overheating, and loss of performance kept me away. Sacrificing too much for having a faster processor speed. Normally I overclock to about 729Mhz and have great battery life, speed and performance in conjunction with a min of 19Mhz and a smartass governor.
Sent from my Hero that never dies! ;D

dastin1015 said:
I can confirm that the Godmode kernel was able to push some phones, such as mine, past 800Mhz. Although I had a faster processor speed, my battery would drain incredibly fast as well as overheat. Even though I never hit a bootloop with the kernel, the battery life, overheating, and loss of performance kept me away. Sacrificing too much for having a faster processor speed. Normally I overclock to about 729Mhz and have great battery life, speed and performance in conjunction with a min of 19Mhz and a smartass governor.
Sent from my Hero that never dies! ;D
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Click to collapse
Thanks. I am glad someone at least confirmed it. I never knew about the godmode kernel as ive only been here for a little bit. Sorry for misinformed post about their not being an 800mhz kernel. As I can see, i was wrong, but also I was correct in saying that the processor can not handle it....sometimes

rizdog23 said:
Thanks. I am glad someone at least confirmed it. I never knew about the godmode kernel as ive only been here for a little bit. Sorry for misinformed post about their not being an 800mhz kernel. As I can see, i was wrong, but also I was correct in saying that the processor can not handle it....sometimes
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Yup, I'm at 806 - 19 ondemand while posting this and I can already feel it slowing down a little. 729 - 19 on demand is my best setup. I've tested a lot with trying higher setups than that but so far 729 seems to be the best for battery life and performance on every rom I've ever tried
Sent from my HERO200 using XDA Premium App

rubyknight said:
Yup, I'm at 806 - 19 ondemand while posting this and I can already feel it slowing down a little. 729 - 19 on demand is my best setup. I've tested a lot with trying higher setups than that but so far 729 seems to be the best for battery life and performance on every rom I've ever tried
Sent from my HERO200 using XDA Premium App
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Click to collapse
For some reason my phone never works well with higher clock speeds no matter what rom or kernel i use. I get my best results at 710-352 performance.

In before bierce gives birth over ANOTHER question being in the dev section
Sent from my Android using Tapatalk

rizdog23 said:
For some reason my phone never works well with higher clock speeds no matter what rom or kernel i use. I get my best results at 710-352 performance.
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Click to collapse
Correct me if I'm wrong, but from what I've noticed is that newer Hero's that were sold with Eclair as opposed to the original Donut, when I bought mine, are not able to reach those higher processor speeds past 691Mhz.
Sent from my Hero that never dies! ;D

i bought mine at radio shack back in september and it was still on 1.5 and ive never been able to get over 768mhz without it freezing and bootlooping its different with every hero.
i stay at 352-691 ondemand and thats plenty fast for me

Mine was running 1.5 also and it will run fine at 768 but battery life suffers so I usually run at 352/710 and battery and performance are good (depends on rom kernel)
Where can I get the godmode kernel ....
Sent from my HERO200 using XDA App

I actually got mine two weeks after it came out.....so i mean it could just be that this phone is dead now. I never had a refurb or anything. I got it wet once but it got repaired. I've only had this one the whole time. Do you think that is the issue?

rubyknight said:
Yup, I'm at 806 - 19 ondemand while posting this and I can already feel it slowing down a little. 729 - 19 on demand is my best setup. I've tested a lot with trying higher setups than that but so far 729 seems to be the best for battery life and performance on every rom I've ever tried
Sent from my HERO200 using XDA Premium App
Click to expand...
Click to collapse
Hey rubyknight,
just wondering why 19? Ive seen people do that but can the processor really ever do anything at 19? if so, doesnt it affect stuff like wake. Im trying it now just to see for myself. Ive been playing with a really high min value between 480 and 576 with the high at 748 and it actually doesnt only seems to affect battery life a little, both on the .29 and .35 kernels on jaybobs roms and on OMFGB.
Thanks

chalan30 said:
Hey rubyknight,
just wondering why 19? Ive seen people do that but can the processor really ever do anything at 19? if so, doesnt it affect stuff like wake. Im trying it now just to see for myself. Ive been playing with a really high min value between 480 and 576 with the high at 748 and it actually doesnt only seems to affect battery life a little, both on the .29 and .35 kernels on jaybobs roms and on OMFGB.
Thanks
Click to expand...
Click to collapse
It depends on the cpu governor that you use.
nandroids are for
sissies

ch1naski said:
It depends on the cpu governor that you use.
nandroids are for
sissies
Click to expand...
Click to collapse
so update, ive run it at 19/768 on demand all day and after 11hrs 13 min its at 60% thats not bad for my phone! and there was almost no performance difference. Just the slightest UI lag... this is on jaybobs 7/8 with the .29 kernel, with background data off. And my regular usage which is not a lot. but for me its good. i wish I had tried it ages ago.

chalan30 said:
so update, ive run it at 19/768 on demand all day and after 11hrs 13 min its at 60% thats not bad for my phone! and there was almost no performance difference. Just the slightest UI lag... this is on jaybobs 7/8 with the .29 kernel, with background data off. And my regular usage which is not a lot. but for me its good. i wish I had tried it ages ago.
Click to expand...
Click to collapse
I believe that you can set the ramp up frequency and that may help with the lag. Setcpu, advanced settings, I think?
nandroids are for
sissies

[Q] Fastest Captivate 2.3 Rom?

Which of the current 2.3 ROMs is considered the fastest/most responsive? Or which ROM would be considered the fastest based on the mods & tweaks used by the developers? I'm not to versed in the technical side of things to discern which tweaks/mods/kernels/etc give way to the most stability, speed, and response and would like the community's opinions on the matter.

Probably CM7, I just started using it and there is never any lag. I haven't even OC'd it yet. This also comes with the price of having to live off a wall charger though.
Sent from my SGH-I897 using XDA App

If you mean fastest in clock speeds, then thats a balance betwen rawr clock and how much battery life you can get out of it. Keep in mind these phones clock easily 1.2ghz-1.3ghz no issues past that you need to increase the voltage. So you can in theory get 1.6ghz-1.8ghz but you will live next to a charger. If you mean fastest on how it feels Id have to say Continuum moved awesome few months back (haven't used it in a while) Atomic Fusion if the ext4 version comes out. But there you should just test them out.
On a side not if you want to OC your phone and not have to pay for the oc app, then Id suggest you stick to I9000 ports or AOSP's like CM7 or MIUI. Native roms like Cognition 5, Atomic Fusion and Nuclear Fusion need Tegrak for OC/UV.

Which of the I9000s seem to run the fastest/smoothest? I've been looking at Dlev and Darky but how does Apex/Symply GS II/Mosaic/Sensation compare?

prbassplayer said:
Keep in mind these phones clock easily 1.2ghz-1.3ghz no issues past that you need to increase the voltage. So you can in theory get 1.6ghz-1.8ghz but you will live next to a charger.
Click to expand...
Click to collapse
I actually read in the Glitch kernel thread that when overclocking, higher voltages doesn't always mean more stability. I'm OC'd at 1.5ghz right now really stable and I was UV'd at -50mv but I just dropped it to -75mv to see if its stable there. I'll keep dropping it till I have issues.
Oh yeah, and CM7's battery life has got WAY better over time, so I'm not having to worry about charging all the time either.
Sent from my Samsung Galaxy S Captivate

Reamer09 said:
I actually read in the Glitch kernel thread that when overclocking, higher voltages doesn't always mean more stability. I'm OC'd at 1.5ghz right now really stable and I was UV'd at -50mv but I just dropped it to -75mv to see if its stable there. I'll keep dropping it till I have issues.
Oh yeah, and CM7's battery life has got WAY better over time, so I'm not having to worry about charging all the time either.
Sent from my Samsung Galaxy S Captivate
Click to expand...
Click to collapse
From my experience to maintain a stable phone i over volt the "step" that's overclocked, and then undervolt the other "steps". Im by no means a expert nor is there a full proof way to do it. Each phone kinda reacts differently on the overclocking past 1.2-1.3ghz.

Which of the I9000 roms should theoretically run faster due to the tweaks/mods used by the developers without the need to overclock?

There if no need to overclock for daily use. Only if you are playing very demanding games. And only during those games.
As for fastest rom....have a search this question gets asked a lot with always the same answer and result:
There is no best rom, all phones are different as well as tastes, what's best for me on my device may not be on yours. Flash and try a few and make you own decision...

CM7 is fastest but Display and Sound quality is not as good as stock ROM .

Before school started for me and i couldnt access a charger when i wanted to, i used MIUI at a stable 1.6 GHz ALL of the time with odemand govenor and i got like 18 hours with moderate use, on Glitch V12! And you dont need to overvolt for higher speeds i have tested it and its better to undervolt higher clocks, i get better battery and performance!
Sent from my Stock KH3/4 2.3.4 Captivate using the XDA Premium App!

For the 10th time Each phone reacts differently to Overclocking. There is no sure way to get it OC/Uv. On my phone past 1.2ghz i need to over volt.

prbassplayer said:
For the 10th time Each phone reacts differently to Overclocking. There is no sure way to get it OC/Uv. On my phone past 1.2ghz i need to over volt.
Click to expand...
Click to collapse
Well i ran 1.6 GHz undervolted at ever clock speed fine, had better performance than over volting, so its different
Sent from my Stock KH3/4 2.3.4 Captivate using the XDA Premium App!

[Q] Nook color overclock.

Hello
I recently acquired a nook color and i am going to install cynogen mod 7.1 and google apps from clock work recovery method, but i want to overclcok to 1.2 or 1.3 ghz, i understand that cynogen mod has an overclock facility built in, the part i am not sure about is to reach 1.2 ghz or 1.3 ghz do i have to use dalingrin overclock kernel to achieve these speeds, or is it possible in cynogen mod 7.1 without the kernel.
Any info would be appreciated.
Regards
Mark

Dal's kernel has been included in there for a while now. If you use 7.1 stable to later nighlies you are definitely safe.

ok, thats great, thanks for the reply, appreciated.
Regards
Mark

It appears the GPU may run best at 1200, even thou the CPU can do up to 1300.

It certainly seems to be true that going past 1200 can slow down graphic intensive operations. I am guessing that's probably because the graphics processor has to run at a ratio of the CPU and going past 1200 ends up with a lower graphics frequency.
But depending on the type of applications used there can be benefit in going higher and most Nooks seem to be capable of 1350. This can be seen in two different benchmarks. Quadrant gives significantly higher scores at 1350 than 1200 whilst the graphically more intensive Nenamark is slower at 1350 then 1200.
I ended up using 1200 anyway as it feels fast and probably also helps with battery life.
Check the voltage settings as well as these can normally be lowered a bit to help again with battery life. I use the one's originally quoted by Dal and don't have any stability issues. ( 09.25 / 1.05 / 1.2 / 1.275 / 1.325)

I did a comparison of 1200 and 1350 MHz with the Sunspider JavaScript bench. 1350 is faster but frankly I have a hard time telling the difference between even stock clock and 1350 in actual practical usage.
The most obvious speed boost I've found is running 16bit color. Big difference in browser scrolling performance.

Is overclocking it fully safe?

GuTsaV said:
Is overclocking it fully safe?
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Click to collapse
From the standpoint that breathing in a metropolitan area is not fully safe, no it is not.
I use the stepper built-in to 7.1 stable and have never given it a second thought.

Try nook color tweaks.
Sent from my [R3] BLURR3D DROID BIONIC using XDA App.

GuTsaV said:
Is overclocking it fully safe?
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Click to collapse
I have run at 1200 / 1350 for the last 4 months and it has been stable and I have not seen any real detectable difference in battery performance or in how warm the device gets. The governor means that a lot of the time the Nook is running at lower clock speed anyway.
I don't recollect seeing any reports of damage on this forum to the Nook through over-clocking. Increasing voltages from the stock values on the other hand is probably not a good idea. There may possibly be longer term effects from overclocking but I'd guess the effect on lifetime is small enough that most people will have changed their device before it is significant.

GuTsaV said:
Is overclocking it fully safe?
Click to expand...
Click to collapse
Being that Nooks CPU is underclocked by default. It is very safe.
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