Hi.
I'm using franco kernel and i'm trying to undervolting the cpu for battery life.
First I would like to know if undervolting is dangerous for the cpu.
In second, how can I find the best setting for me? Which test I have to do? My cpu is PVS 1. I'm using FKU with -50mv.
Thank you
Paolo
No it's not dangerous for the CPU, the device will become unstable and possibly randomly restart if the voltage is too low.
You can try the Antutu app which has a stability test
JonesL said:
No it's not dangerous for the CPU, the device will become unstable and possibly randomly restart if the voltage is too low.
You can try the Antutu app which has a stability test
Click to expand...
Click to collapse
Thank you. If the "Antutu's stability test" fails , i get an error? Or simply i get the restart of device?
My cpu is PVS 1: realistically how much can I get off? I'm now at -50 mv without problems.
Paolo83 said:
Thank you. If the "Antutu's stability test" fails , i get an error? Or simply i get the restart of device?
My cpu is PVS 1: realistically how much can I get off? I'm now at -50 mv without problems.
Click to expand...
Click to collapse
-75, maybe -100. Btw, this should go in q&a
Paolo83 said:
Hi.
I'm using franco kernel and i'm trying to undervolting the cpu for battery life.
First I would like to know if undervolting is dangerous for the cpu.
In second, how can I find the best setting for me? Which test I have to do? My cpu is PVS 1. I'm using FKU with -50mv.
Thank you
Paolo
Click to expand...
Click to collapse
I'm using cataclysm and r14 right now. I'm undervolting -75. Last night I left my phone unplugged and drained 1% over 6 hours idle.
Sent from my Nexus 5 using xda premium
cntrdctn said:
I'm using cataclysm and r14 right now. I'm undervolting -75. Last night I left my phone unplugged and drained 1% over 6 hours idle.
Sent from my Nexus 5 using xda premium
Click to expand...
Click to collapse
I use Cataclysm + r14 as well, but if I undervolt more than -25mV across the board, the phone would crash in antutu benchmark. (I'm sort of using antutu as a stress test)
Paolo83 said:
Hi.
I'm using franco kernel and i'm trying to undervolting the cpu for battery life.
First I would like to know if undervolting is dangerous for the cpu.
In second, how can I find the best setting for me? Which test I have to do? My cpu is PVS 1. I'm using FKU with -50mv.
Thank you
Paolo
Click to expand...
Click to collapse
Undervolt (mV) isn´t for battery life, it´s for low temperature. Underclock (MHz) is done for battery pourposes
Related
I'm sorry for the noob question but I really don't understand voltage terms and what's it for and how it work I was wandering if anyone could explain it to me?
In the past I would use set CPU and create a few profiles and would be done with it but I been reading on the forums about setting voltages higher and lower for better performance.
Currently i'm on eagles blood 2.3.5 ROM, trinity t15 (fun) kernel.
Any help would be much appreciated.
Sent from my LG-P999 using XDA App
Don't know what it does don't use it
Sent from my LG-P999 using XDA App
ritthyhang said:
I'm sorry for the noob question but I really don't understand voltage terms and what's it for and how it work I was wandering if anyone could explain it to me?
Click to expand...
Click to collapse
It's to save power and get better battery life. You lower the amount of power the chip gets at various clockspeeds until it starts not working correctly, then back up to a voltage at which the chip is stable at that clockspeed. Some chips can handle lower voltages than others while still working correctly.
Overclocking = get better performance
Undervolting = get better battery life
Both can lead to phone instability if you set the values to extremes.
Thank you for the info
Sent from my LG-P999 using XDA App
lannister80 said:
It's to save power and get better battery life. You lower the amount of power the chip gets at various clockspeeds until it starts not working correctly, then back up to a voltage at which the chip is stable at that clockspeed. Some chips can handle lower voltages than others while still working correctly.
Overclocking = get better performance
Undervolting = get better battery life
Both can lead to phone instability if you set the values to extremes.
Click to expand...
Click to collapse
So lemme ask this how do I undervolt and what voltage is safe to undervolt?
Sent from my LG-P999 using XDA App
ritthyhang said:
So lemme ask this how do I undervolt and what voltage is safe to undervolt?
Sent from my LG-P999 using XDA App
Click to expand...
Click to collapse
It all depends on the kernel your using and if it supports UV, it should say if it does in the name of the kernel tho(just look for uv ) Setcpu 2.2.4 will allow you to change voltages only if your kernel/rom support it.
you can safely undervolt -50 -75 at most all the way up to 1.0ghz-1.1ghz i wouldn't undervolt past that.
d12unk13astard said:
It all depends on the kernel your using and if it supports UV, it should say if it does in the name of the kernel tho(just look for uv ) Setcpu 2.2.4 will allow you to change voltages only if your kernel/rom support it.
you can safely undervolt -50 -75 at most all the way up to 1.0ghz-1.1ghz i wouldn't undervolt past that.
Click to expand...
Click to collapse
So what your saying is I can use setcpu to change the voltage?I just recently changed kernels I saw that option available but I didn't understand how to use it.under voltages it shows all the GHz underneath it it shows 0.From here what do I do?, do I go too each GHz profile and -50 from all of it?
Sent from my LG-P999 using XDA App
I'm using AOSP+ ICS ROM with the latest Matr1x kernel. Whenever I try to OC to 1460 the phone freezes and I have to pull the battery, so I'm forced to run at a maximum of 1300MHz.
Also, on a related matter, is it good practice to use SetCPU with various profiles (battery<, temp>, screenoff, charging) for various frequencies? Or should I just use AOSP+ tweaks to chose a min and max frequency and let it be?
Thanks for taking the time to answer these.
Raise all voltages by +30 across the board
Sent from my Nexus S using XDA App
My Phone freezes when i try to OC to 1460
Read the above comment or read my FAQ...god..
Lol
Sent from my Nexus S using XDA App
http://www.youtube.com/watch?v=DPclc3eKgiQ&feature=youtube_gdata_player
Sent from my Nexus S using XDA App
zgomot said:
Also, on a related matter, is it good practice to use SetCPU with various profiles (battery<, temp>, screenoff, charging) for various frequencies? Or should I just use AOSP+ tweaks to chose a min and max frequency and let it be?
Click to expand...
Click to collapse
If you are using deep idle you shouldn't underclock since it causes a race-to-idle condition. In other words your battery will drain faster. If you don't use deep idle, feel free to underclock when the screen is off or whatever you want.
sakisds said:
If you are using deep idle you shouldn't underclock since it causes a race-to-idle condition. In other words your battery will drain faster. If you don't use deep idle, feel free to underclock when the screen is off or whatever you want.
Click to expand...
Click to collapse
To the point and verry helpful, thanks a bunch
mathkid95 said:
Raise all voltages by +30 across the board
Sent from my Nexus S using XDA App
Click to expand...
Click to collapse
Can I do this via AOSP+ tweaks and still use SetCpu to OC and UC? Are they conflicting apps? (Deep idle OFF)
Sent from my Nexus S using XDA App
I would recommend just using setcpu
Sent from my Nexus S using XDA App
mathkid95 said:
Raise all voltages by +30 across the board
Sent from my Nexus S using XDA App
Click to expand...
Click to collapse
Just an update, Using CNA 1.4.0 and Matr1x v17, I am stable oc'ed to 1460.
this is what I am running
1)800/1460
2)gov =Ondemand
3)Scheduler =Noop
4)all voltages to +30 (used the cna rom's voltage tweaker)
I tried ShadowGun: the Leftover.. and It was flying. Of course, make sure that have enough battery or that you have a charger ready. But finally it works, try this and let me know
I can run it for 10-20 min of usage then get a freeze. I never raised the voltages before though. It seems like its working for other people. And the actual developer of Matrix Kernel is telling you to ....
Nexus S (GSM i9020a)
AOKP (Build 25)
Eugene's Kernel (Speedy 7)
OC 800/100 (Lionheart)
Live OC (105)
It still amazes me how so many people that ask about overclocking have no frigging idea at all how cpus/gpus in general are binned etc.
I have a question. Why do you guys overclock that much? It might be snappy but battery life is just bad and it just doesn't worth it in my opinion.
Sent from my Nexus S from Tapatalk
albundy2010 said:
It still amazes me how so many people that ask about overclocking have no frigging idea at all how cpus/gpus in general are binned etc.
Click to expand...
Click to collapse
Care to shed some light for us people that have no frigging idea at all how cpus/gpus in general are binned etc? If not, well... why did you even bother posting?
ljordan2 said:
I have a question. Why do you guys overclock that much? It might be snappy but battery life is just bad and it just doesn't worth it in my opinion.
Sent from my Nexus S from Tapatalk
Click to expand...
Click to collapse
Personally, I do it because I can. Seriously... I'm a geek, I love gadgets and tech and I like to tinker.
On the subject at hand, I'm still unable to OC to 1460 (ARM voltages +30, INT voltages +25) but at 1300 it runs fine, no issues whatsoever.
i can run 1460 stable all day. bigxie/matrix. just did +30 to all the voltages above 1000. deadline and lulzactive..
If you are a geek you would know about something as simple as binning chips. Do what a tech geek would do...look it up. Same thing the op should have done with his ?. Hell mathkid has a answer to his ? In the op of his kernel thread. Which is the kernel he is running
albundy2010 said:
If you are a geek you would know about something as simple as binning chips. Do what a tech geek would do...look it up. Same thing the op should have done with his ?. Hell mathkid has a answer to his ? In the op of his kernel thread. Which is the kernel he is running
Click to expand...
Click to collapse
You're kinda bitter for someone married to a busty redhead
jesusice said:
You're kinda bitter for someone married to a busty redhead
Click to expand...
Click to collapse
Haha, I thought so too.
Sent from my Nexus S
Hey guys will overclocking drain the battery quicker even with stock voltages?
Sent from my Nexus S using XDA Premium App
Different voltages are specified as stock for different frequencies. As the frequency changes, the voltage does too. Running 1200mhz with the stock 1000mhz voltage will probably cause instability and crashing.
Harrb, great post.
Sent from my Nexus S 4G using XDA App. Developer of brickROM, and OP of XDA Thread of The Year 2011.
And if increase voltage, the power consumption should also increase.
i haven't played with voltages yet but in my experience the benefits of overclocking are minimal anyway, and they make nexus reboot often and other bad things :/
With the right settings you can get a fully stable and functional overclock, but it is on a per-phone basis due to varying quality of the same CPU during manufacture.
Harbb said:
Different voltages are specified as stock for different frequencies. As the frequency changes, the voltage does too. Running 1200mhz with the stock 1000mhz voltage will probably cause instability and crashing.
Click to expand...
Click to collapse
Currently I'm using icup kernel speedy 5 clocked at 1.4 and its been extremely stable. So what your saying is that the voltages automatically increase when I select a higher frequency, because I did not change them manually.
Sent from my Nexus S using XDA Premium App
xmatrix13 said:
Currently I'm using icup kernel speedy 5 clocked at 1.4 and its been extremely stable. So what your saying is that the voltages automatically increase when I select a higher frequency, because I did not change them manually.
Sent from my Nexus S using XDA Premium App
Click to expand...
Click to collapse
Open NSTools and select Voltage tab. That's the list of "stock" voltages for each frequency.
suksit said:
Open NSTools and select Voltage tab. That's the list of "stock" voltages for each frequency.
Click to expand...
Click to collapse
Thanks
Sent from my Nexus S using XDA Premium App
A CPU governor such as on demand, lulzactive and lazy tells the CPU what clock to be at and automatically change. While reading, it will be at 100 or 200mhz, while playing a game it will be at the maximum clock you tell it to. Saves power this way.
your asian said:
i haven't played with voltages yet but in my experience the benefits of overclocking are minimal anyway, and they make nexus reboot often and other bad things :/
Click to expand...
Click to collapse
yes, usually 1 GHz is enough , UV or OC also may reduce hardware's physical life
As the title states, put up your dukes!
Running manually debloated stock odex'ed
0502 PBJ EXT4
Scheduler BFQ
Governer Performance
100Mhz-No UV
400Mhz-No UV
1000Mhz-No UV
1,400Mhz-No UV
There is still an annoying lag here and there but for the most part it rips!
Eclipse v1.4, FP1 radios, sio scheduler, smartassV2 governor, 0130 PBJ
Code:
1400MHz -> -50mV (don't typically use this one)
1300MHz -> -50mV
1200MHz -> -50mV
1000MHz -> -75mV
800MHz -> -100mV
400MHz -> -100mV
200MHz -> -125mV
100MHz -> -150mV
[edit: Forgot to add my governor. OP, you use performance all the time? How does that not destroy your battery?]
Tweaked v2
PBJ May EXT4
0-800mhz -100mv smartassv2 sio
Anything else?
Sent from my SCH-I510 using xda premium
Tweaked 2
Pbj 0502
Smartasv2
1200 - 50
1000 -75
800 -100
400 -125
200 -150
100 -200
Sent from my handheld Linux computer using electromagnetic radiation.
Cilraaz said:
[edit: Forgot to add my governor. OP, you use performance all the time? How does that not destroy your battery?]
Click to expand...
Click to collapse
I have to give it a week or so to see how battery consumption is.
You guys' phones are so heavily undervolted.
No performance problems with that? Music playback difficulties?
bwheelies said:
I have to give it a week or so to see how battery consumption is.
You guys' phones are so heavily undervolted.
No performance problems with that? Music playback difficulties?
Click to expand...
Click to collapse
No problems for me. And performance governor means the phone stays at max frequency all the time. You should never use it for real usage just for testing.
bwheelies said:
I have to give it a week or so to see how battery consumption is.
You guys' phones are so heavily undervolted.
No performance problems with that? Music playback difficulties?
Click to expand...
Click to collapse
Undervolting has zero to do with performance. The danger with undervolting is instability. If you undervolt too much, you'll crash because your CPU can't draw enough power to do an operation.
A certain CPU is able to do a certain amount of work in a given clock cycle, and that amount of work does not change in the slightest with voltage.
EDIT: Also, as JihadSquad said, performance keeps your CPU at 100% maximum clock speed at all times. It doesn't let it slow down. It is brutal on a battery for no real world gain.
Anyone notice when using smart ass governor it won't overclock to 1400 , it can over chick anything else but not 1400 for some reason so I have it at 1440
Sent from my SCH-I510 using XDA
And I'm using set cpu
Sent from my SCH-I510 using XDA
Ahh 1.5ghz is so smooth!, I'm running that from now on, it improves touch sensitivity
Sent from my SCH-I510 using XDA
juanzr1 said:
Ahh 1.5ghz is so smooth!, I'm running that from now on, it improves touch sensitivity
Sent from my SCH-I510 using XDA
Click to expand...
Click to collapse
Lucky lucky piece of silicon right there. Mine can only get to 1400 and at 1440 it starts freezing sometimes, 1500 unusable.
JihadSquad said:
Lucky lucky piece of silicon right there. Mine can only get to 1400 and at 1440 it starts freezing sometimes, 1500 unusable.
Click to expand...
Click to collapse
I can only get 1300 on mine. 1400 randomly reboots on me after a while.
JihadSquad said:
Lucky lucky piece of silicon right there.
Click to expand...
Click to collapse
Or unlucky. At SetCPU's default for 1500MHz, it's running +325mV (+27.7%) from stock. So it's either really good silicon or a contender for a replacement in a few months.
Eclipse 2.0
CWM version 5.0.2.7
Baseband i510.06.FP1
Kernel 2.3.35.4-EP4-g311a209
Build SCH-I510.FP1
Lag is brutal sometimes. Speaker crackles and pops. Phone calls only last a couple minutes before the person on the other end can't hear me.
I am looking for a better solution. Any pointers would help greatly.
Oldtymehockey said:
Eclipse 2.0
CWM version 5.0.2.7
Baseband i510.06.FP1
Kernel 2.3.35.4-EP4-g311a209
Build SCH-I510.FP1
Lag is brutal sometimes. Speaker crackles and pops. Phone calls only last a couple minutes before the person on the other end can't hear me.
I am looking for a better solution. Any pointers would help greatly.
Click to expand...
Click to collapse
For one thing, you're running an EP4 kernel with a FP1 rom and radio. Install a FP1 kernel, either stock (http://forum.xda-developers.com/showthread.php?t=1582470) or PBJ (http://rootzwiki.com/topic/137-05-04-12peanutbutta-jelly-time/) and go from there.
shrike1978 said:
For one thing, you're running an EP4 kernel with a FP1 rom and radio. Install a FP1 kernel, either stock (http://forum.xda-developers.com/showthread.php?t=1582470) or PBJ (http://rootzwiki.com/topic/137-05-04-12peanutbutta-jelly-time/) and go from there.
Click to expand...
Click to collapse
I think I need to deal with the file system first. I have that discussion going in another thread.
Perhaps Odin back to stock and reapplying changes in order is in order.
JihadSquad said:
Lucky lucky piece of silicon right there. Mine can only get to 1400 and at 1440 it starts freezing sometimes, 1500 unusable.
Click to expand...
Click to collapse
Well 1500 crashed on me and 1440 was a little better but it also crashed
Sent from my SCH-I510 using XDA
What's the highest anyone has overclocked?
IM running
Pbj 0130 kernel ( also I can't get the new kernel to install 0504, it boot loops when I try) any ideas?
Stock ROM
SmartassV2
Overclocked to 1.4mhz
Underclocked at 200mhz
Sent from my GT-P6210 using xda premium
wolverine38812 said:
What's the highest anyone has overclocked?
IM running
Pbj 0130 kernel ( also I can't get the new kernel to install 0504, it boot loops when I try) any ideas?
Stock ROM
SmartassV2
Overclocked to 1.4mhz
Underclocked at 200mhz
Sent from my GT-P6210 using xda premium
Click to expand...
Click to collapse
Did you wipe cache and dalvik. I like doing it before and after flashing kernel and rom.... don't forget to mount system, if that does not do it mount everything.... post the steps you have used before so we can better help you.
Sent from my SCH-I510 using XDA
wolverine38812 said:
What's the highest anyone has overclocked?
IM running
Pbj 0130 kernel ( also I can't get the new kernel to install 0504, it boot loops when I try) any ideas?
Stock ROM
SmartassV2
Overclocked to 1.4mhz
Underclocked at 200mhz
Sent from my GT-P6210 using xda premium
Click to expand...
Click to collapse
Try to fix permissions before leaving CWM. That has worked for some people trying to go back to stock.
What undervolting have people got set with what set up that's still safe and stable... How low can you actually go on the nexus 5?
For example... I'm currently...
Rom: stock with some apps removed
Runtime: ART
User style: just phone and Internet browsing, no games really ever
Kernel: linaro version of franco's
Kernel Settings: stock min and max frequency - 61 vibration amp setting.
Undervolt: - 50 across the board
Sent from my Nexus 5 using Tapatalk
All undervolting is safe. Just not necessarily stable. Varies for everyone (and evey CPU is different) so not sure this thread will help you.
rootSU said:
All undervolting is safe. Just not necessarily stable. Varies for everyone (and evey CPU is different) so not sure this thread will help you.
Click to expand...
Click to collapse
-50 is the best I can get without the phone freezing and rebooting.
I run at 975mV 2.2GHz, that's PVS3. Think that's pretty good.
Sent from my Nexus 5 using xda app-developers app
frigidazzi said:
-50 is the best I can get without the phone freezing and rebooting.
Click to expand...
Click to collapse
Same.