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.
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Don't know what it does don't use it
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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
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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?
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ritthyhang said:
So lemme ask this how do I undervolt and what voltage is safe to undervolt?
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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?
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Related
If I have CM7 #54, do I need a special kernel or not?
SetCPU is not detecting the frequencies for me
I am using CPUMaster but I have the free version only
What is the best software to overclock automatically?
I also want profiles (Battery temp, battery %, screen off...)
In Quadrant I got 3000 points with 1.5Ghz
Now I only need to find a way to overclock it and have all the profiles and boot overclock work right out of the box
Thanks a lot
Sooooo you over clocked to it to 1.5, but yet you still need to find a way to do it?? Read..... all the answers are in this very section....
Oh by the way wrong section to post.
Sent from the fifth dimension...
rafarataneneces said:
If I have CM7 #54, do I need a special kernel or not?
SetCPU is not detecting the frequencies for me
I am using CPUMaster but I have the free version only
What is the best software to overclock automatically?
I also want profiles (Battery temp, battery %, screen off...)
In Quadrant I got 3000 points with 1.5Ghz
Now I only need to find a way to overclock it and have all the profiles and boot overclock work right out of the box
Thanks a lot
Click to expand...
Click to collapse
ok first set cpu will not be able to oc for you. use pimp my cpu you should be able to find it if you do a search. second if you want to oc use faux's kernel for that.
rafarataneneces said:
Quadrant I got 3000 points with 1.5Ghz
Click to expand...
Click to collapse
4500 with faux rom 1.2.4 and 0.2.2 kernel.
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I used SetCPU before on my OptimusT, and it was actually working pretty good, BUT NOT ON LGE STAR. For now, the best overlocking app for LGE STAR is PimpMyCPU WITH CUSTOMIZED KERNEL.
With FR and Faux's kernel, you can easily get 4000+ on Quadrant.
With GB and its own kernel, I think we just get like 3000+
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Oh 1 more thing, T-mobile doesn't release the GB update for LGE Star yet. The CM project is built based on the GB source code only...
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Use pimp my cpu, setcpu doesn't let you overclock. It only shows your cpu speed but nothing else.
Sent from my G2x
Thread moved to proper forum.
rafarataneneces said:
In Quadrant I got 3000 points with 1.5Ghz
Now I only need to find a way to overclock it and have all the profiles and boot overclock work right out of the box
Thanks a lot
Click to expand...
Click to collapse
I got 4094 in quadrant OCed to 1.5Ghz on Ultimate, very impressive considering its a froyo rom nonetheless
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rafarataneneces said:
If I have CM7 #54, do I need a special kernel or not?
SetCPU is not detecting the frequencies for me
I am using CPUMaster but I have the free version only
What is the best software to overclock automatically?
I also want profiles (Battery temp, battery %, screen off...)
In Quadrant I got 3000 points with 1.5Ghz
Now I only need to find a way to overclock it and have all the profiles and boot overclock work right out of the box
Thanks a lot
Click to expand...
Click to collapse
I thoroughly tested OC on CM with different kernels. I got the best results with the Trinity kernel. My highest recorded Quadrant score was 4920 and I averaged 4690 over 10 trials with that configuration.
http://forum.xda-developers.com/showthread.php?t=1078049&highlight=trinity
I am on CM7 (n72) with faux's latest 0.2.9 uv kernel, and am undervolted all the way down to 10 mv each on the 389 and 503 frequencies with no performance changes. I have tried setting it with both setcpu and pimpmycpu. I know there can't be a way for my phone to be working at those levels so what am I doing wrong? Am I missing something?
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If you lowered the voltages to -10 then you have not lower to aggressive. If you lower the volts to much device will not boot. I am at -50 across all values. Lower the volts is supposedly to improve battery (life) performance not speed performance.
To be quite honest with the questions the OP is asking he shouldn't be messing with an UV kernel.
Ok, I believe the kernel has a built in minimum mv that it will run at, regardless of how low you set the values in setcpu. Im certain that faux posted what that low value was once when someone else was bragging about undervolting by -250...you aren't really undervolting that low. However, some of our phones cant even handle that minimum low voltage, so consider yourself lucky.
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mmapcpro said:
Ok, I believe the kernel has a built in minimum mv that it will run at, regardless of how low you set the values in setcpu. Im certain that faux posted what that low value was once when someone else was bragging about undervolting by -250...you aren't really undervolting that low. However, some of our phones cant even handle that minimum low voltage, so consider yourself lucky.
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Click to collapse
Thank you that's what I was wondering about! Sorry if I didn't phrase my question correctly, I meant the voltages were set at 10 mv, not lowered by 10
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I ran into the same problems. In another thread, faux123 stated that the way tegra works, each adjacent frequency level should only differ by ~ 100mV. so if you started with 1000mhz @ 1000 mV, then the next frequency will be 800mhz @ 900mV (just an example). so pretty much it all depends on how low of a voltage your top frequency can run on. if your voltage difference between 2 adjacent frequencies is larger than ~100mV, then it means nothing.
again, I gathered this info from faux. I have no sold knowledge whatsoever
prettyboy85712 said:
To be quite honest with the questions the OP is asking he shouldn't be messing with an UV kernel.
Click to expand...
Click to collapse
We all have to start from somewhere, be nice. It sounded like he misspoke.
I recently got faux's kernel for GB and I'm wondering what voltages I should use in SetCPU or PimpMyCPU for optimum battery life and performance.
Sent from my G2X
Every phone is different some can handle extreme uving others can't even boot the phone after flashing the kernel. You have to just try and test until you find something stable and up to your needs.
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I have no experience with cpu overclocking so I really don't know what it means like a -100mv undervolt @1.4 GHZ. Would I get the same performance but use less power??
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Hey guys will overclocking drain the battery quicker even with stock voltages?
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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.
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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.
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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.
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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
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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?
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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?]
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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
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And I'm using set cpu
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Ahh 1.5ghz is so smooth!, I'm running that from now on, it improves touch sensitivity
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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
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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
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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.
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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.