hi guys,
does anyone have a tried and working UV values for best battery life? I don't want any more performance, so I'm not looking for OC, but perhaps any idea what UV stays stable?
Well, it's easy the higher you OC, the more it will drain your battery. As for UV, I can't tell because the voltages are different for every device, Rom and kernel...
Sent from my LG-Stone from the Prehistory...
Nahh... Just kidding!
CM 7.2 Koboltzz KANG
IronKernel 32MB
Usually undervolting -50mv for each speed will work for most devices, although its not recommended to decrease that much for speeds below 800mhz since it will affect your phone's wake up speed.
And tegra 2 cpu controller only supports minimum of 770mv, going anyway lower than this value will not have any effect.
My advice, try UV -25mv for 500mhz, and the rest above is -50mv. Some o2x can go -100mv, but you need to be lucky to own such device.
Cheers!
Mine is working perfectly on -75.
But when i go to -100, soemtime freezes device, so i use -75 regularly.
trying -50 across the board now, seems to run stable.
brw, how does lower voltage hurt the speed?
I can't really explain clearly since I do not know the technicals, but from what I read in xda, it will affect your speed, meaning 1.2ghz running at undervolted setting will not run the same as at stock voltage. Maybe its an efficiency issue, I do not know.
I thing that i experience, If you undervolt too much the few lowest clock steppings, you sometimes might not able to wake the phone from sleep because there is not enough power to wake it up.
I hope my explanation help you a little, and hopefully someone with more experience can give you a better explanation.
using -25mv ate 1.1ghz and 1ghz, -50mv at 800 Mhz, and -100mhz (750Mhz so its 770mhz because hardware limitations) on all other frequencies!
-50 mv is the limit for the device don't use below -50mv. but it dependes on your device. mine cannot UV it always gives me SOD i think my hardware phone is crap
antec123 said:
-50 mv is the limit for the device don't use below -50mv. but it dependes on your device. mine cannot UV it always gives me SOD i think my hardware phone is crap
Click to expand...
Click to collapse
When did you buy your phone?
I have one of the 10 first phones sold in Sweden and I cannot undervolt mine at all.
Just wondering if there's any correlation between manufacturing time and UVability (yeah I just made that word up).
// Stefan
I run with 1100.. good compromise between speed and battery life i think
Related
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.
Click to expand...
Click to collapse
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.
Click to expand...
Click to collapse
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...
Click to collapse
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
Click to expand...
Click to collapse
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.
Click to expand...
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...
Click to collapse
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.
What are the benefits of OC/UV (particularly for CM7)?
I know of improved performance due to OC, but what does UV do in regards to performance. Also, how does an OC/UV kernel compare to one without the option?
your processor doesn't need as much voltage as the stock settings--undervolting lets you save battery
personally i want to know.. do you have to UV to OC?
xredjokerx said:
your processor doesn't need as much voltage as the stock settings--undervolting lets you save battery
personally i want to know.. do you have to UV to OC?
Click to expand...
Click to collapse
You can do either or both but don't have to do both. At some point UVing will cause a crash. Right before that point it can cause performance issues. See the link below for instructions on how to find an optimal UV level to maximize battery savings and performance.
http://forum.xda-developers.com/showpost.php?p=10936691&postcount=1102
OCing improves speed but can also cause stability issues. For a captivate this usually isn't a problem until you get past 1.2 ghz. After that, it depends on the kernel but I have yet to find a kernel that is completely stable past 1.2 ghz under stressful conditions. Samsung designed the processor to handle 1.2 ghz and in theory it can go up to at least 1.6.
Like everyone before me has said, OC will make your processor work more (which will eat up more battery, and send the temps a bit higher).
UV is a way to "fix" that problem by controlling the voltage used by each Mhz/Ghz range. The mini guide that QuarkGluonSoup posted is a great way to start off.
Most Captivates start have random errors past 1.2Ghz, but the highest I've seen (stable) are 1.4Ghz.
venomio said:
Like everyone before me has said, OC will make your processor work more (which will eat up more battery, and send the temps a bit higher).
UV is a way to "fix" that problem by controlling the voltage used by each Mhz/Ghz range. The mini guide that QuarkGluonSoup posted is a great way to start off.
Most Captivates start have random errors past 1.2Ghz, but the highest I've seen (stable) are 1.4Ghz.
Click to expand...
Click to collapse
Odd as it sounds, my battery life on CM7 is close to 50% better when it is OC'ed to 1.2 ghz and UV'ed than it was on the froyo ROMs under the same conditions.
That really is odd :S I think I'll try it myself.
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?
Click to expand...
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?
Click to expand...
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.
---------------------------------
Sent from my LG Optimus V using Tapatalk
hi folks, thinking about leaving oc on permenantly (1200 mhz) I an aware of the dangers, but thought about getting some facts, my question is, how long have people been running art 1200 mhz without any issues, how many weeks or months?
Sent using TCP/IP
1200mhz refers to the highest clock. Your phone doesn't stick to that frequency all the time. It generally scales from 100mhz to 1200mhz. It doesn't really matter if you overclock your device except for effects on battery and I don't think there would be any effect on the Hardware as much as that of an Overclocked computer cpu and considering the average number of months people tend to use their mobile device before getting a new and a better phone.
dhiru1602 said:
1200mhz refers to the highest clock. Your phone doesn't stick to that frequency all the time. It generally scales from 100mhz to 1200mhz. It doesn't really matter if you overclock your device except for effects on battery and I don't think there would be any effect on the Hardware as much as that of an Overclocked computer cpu and considering the average number of months people tend to use their mobile device before getting a new and a better phone.
Click to expand...
Click to collapse
my phone spends approx 20% of its time at Max freq, thats 1/5 th of its time. I think there would be more potential damage than a computer cpu as these have much better cooling (fans), I just want to know how long people have run at say 1200 without any issues.
Sent using TCP/IP
Longest time: two weeks ... whitout problems ...
I'm been overclocking my SGS for over 6 months now, no issues at all.
"Standard" voltage values seems to work fine on my device (1350mV at 1200MHz, 1400mV at 1300MHz) but I've tried to undervolt a bit more than once and had no issues as well.
Bye
There are absolutely no dangers in OC/UV. The worst thing to happen is a freeze or reboot once in a while if u go too high. I've been having 1.5mhz w/ some UV for like 2 months and nothing happened so no worries.
Been doing that for about a month now. No problem.
Knowledge is Power. Guard it well.
there are no risks if you overclock your device,but of course depends on how you do it. first of all i would not go past 1300mV which is the physical limit of our beloved hummingbird..of course you can do that,but past 1300mV you are going to shorten the life of your CPU. if you change phone every year then,there's no problem
then if you want to overclock keeping safe voltage values just get Tegrak Overclock,don't activate the "CPU MAX frequency" option,go in optimization tab instead and push up the max frequency by little steps keeping the voltage at the default value of 1275. test it a bit till you reach the most stable one. for example my CPU it's totally rocksolid 'till 1132MHz at 1275mV,no more. but there are CPUs which can archieve better results. then if you want to optimize and save battery consumption you can play a bit with UV on the other frequencies,cheers
I've undervolted my device and right now I have
100mhz - 825 mah
200mhz - 825 mah
500mhz - 800 mah
for some reason the 500mhz setting is stable and if I undervolt 100mhz/200mhz even more, I crash.
If I set my minimum processor power to 500mhz would I consume less batter than if I were to use 100mhz/200mhz?
Your phone spends most of its time in the lowest and highest cpu frequencies and just a small amount of time at the intermediate levels. Your undervolt for 500mhz probably isn't stable but it doesn't crash because it's only at that frequency for a very short amount of time. If you set the minimum to 500mhz at that voltage it will probably start playing up.
http:/ /db.tt/iy1bKVoB
graph of my cpu levels
Abit offtopic but what the hell!
I was wondering if there's any risks involved with undervolting?
I don't meen the crashes and freeze ups, but rather more like if there's any risk
to really damage your phone from it?
I have and still do alot of OC in the computer world, and do know what overvolting can do. But i'm still curious about what uv can do to your system.
Maskell said:
Your phone spends most of its time in the lowest and highest cpu frequencies and just a small amount of time at the intermediate levels. Your undervolt for 500mhz probably isn't stable but it doesn't crash because it's only at that frequency for a very short amount of time. If you set the minimum to 500mhz at that voltage it will probably start playing up.
http:/ /db.tt/iy1bKVoB
graph of my cpu levels
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Click to collapse
It's been my minimum even before posting this thread. I just started to wonder.
I've been on it for 10 hours now. I have 45% battery life left. Probably due to my 1700mhz being @ 1350mah right now.
I can assure you, it's VERY stable. It's so SMOOTH. Smoother than just having rocketrom and all that stuff. NO LAGS, NO SHUTDOWNS. ALL STABLE.
I can see better battery life, and CPU Spy says it used up 47% 1700mhz and 40% 500mhz. I think it's giving me better battery life.
It's evenly splitted up probably because I was using lulzactive governor.
but then again I didn't log my previous battery life without undervolting.
Some more insight would be nice.
SweCrow81 said:
Abit offtopic but what the hell!
I was wondering if there's any risks involved with undervolting?
I don't meen the crashes and freeze ups, but rather more like if there's any risk
to really damage your phone from it?
I have and still do alot of OC in the computer world, and do know what overvolting can do. But i'm still curious about what uv can do to your system.
Click to expand...
Click to collapse
There are alot of risks. Minor chance that you will cause hardware damage to your phone but I'm saying VERY minor. Just don't be stupid with voltages, like just suddenly overdropping the voltages. Your processor might die.
It's scary as hell, it crashes alot while testing and all that ****.
Feels good when you get it stable though.
TL;DR
Very slight chance to damage your hardware; only if you're very daring.
It should increase your battery life by atleast 20% if you reach the peak of your processors limit.
Bump, are there no other insights on this? Am I like, the only one who undervolted his/her note?
help
clairenix said:
Bump, are there no other insights on this? Am I like, the only one who undervolted his/her note?
help
Click to expand...
Click to collapse
I want to run 1700mhz as permanent and also wanted to undervolt but i wasnt sure how much by and what the risks are. Reason being is my phone gets hot with heavy usage running at 1400mhz so didnt want to go to 1700. I'll watch this thread with interest
kaos_king said:
I want to run 1700mhz as permanent and also wanted to undervolt but i wasnt sure how much by and what the risks are. Reason being is my phone gets hot with heavy usage running at 1400mhz so didnt want to go to 1700. I'll watch this thread with interest
Click to expand...
Click to collapse
I'm running 500-1700mhz.
Indeed it does get hot at 1700mhz, when I'm playing games but I've only at most played for 4 hours straight.
For what reason would you want to run 1700mhz-1700mhz?
clairenix said:
I'm running 500-1700mhz.
Indeed it does get hot at 1700mhz, when I'm playing games but I've only at most played for 4 hours straight.
For what reason would you want to run 1700mhz-1700mhz?
Click to expand...
Click to collapse
No sorry i meant running it at 1700 max, leaving it stock for the min. I just wanted to know how much i can safely undervolt 1700 by.
I actually have a question. I undervolted my note with SetCPU and I read that Tegrak Overclock Ultimate should be used as well together with SetCPU.
What does Tegrak Overclock do? GPU settings?
Would like to learn that part if anyone has any info.
kaos_king said:
No sorry i meant running it at 1700 max, leaving it stock for the min. I just wanted to know how much i can safely undervolt 1700 by.
Click to expand...
Click to collapse
I undervolted mine by about 100mah. I think I can tone it down by about 25mah more but I'm having a hard time getting it to stabilize.
1350 for my device is completely safe though.
Though, all processors are different. Yours could be better than mine and can withstand more UV-ing.
Goodluck!
liutszho said:
I actually have a question. I undervolted my note with SetCPU and I read that Tegrak Overclock Ultimate should be used as well together with SetCPU.
What does Tegrak Overclock do? GPU settings?
Would like to learn that part if anyone has any info.
Click to expand...
Click to collapse
It's basically the same with SetCPU aside from its voltages.
I do not know if it should be used with SetCPU with the note because from what I've researched. It's only a common practice with SGSII.
Tried setting 100 and 200 mhz to 825. Crashed my phone twice in one day using it, gonna revert back to 875
clairenix said:
I undervolted mine by about 100mah. I think I can tone it down by about 25mah more but I'm having a hard time getting it to stabilize.
1350 for my device is completely safe though.
Though, all processors are different. Yours could be better than mine and can withstand more UV-ing.
Goodluck!
Click to expand...
Click to collapse
Many thanks!
I will just experiment then, i didnt want to do that and then cause hw damage. I'll let you know how my processor gets on