just curious about what might be a safe undervolt range to set my CPU at? I've got the 1.3ghz set at -75 and the middle frequencies at -100. I seem to be getting a little better battery life no forcecloses yet. I had a Droid x last time and the oc app just had a selection of extreme undervolt but I never remembered what the voltages were
Proud graduate of flashaholics anonymous
Undervolting depends on CPU Type. Theirs no specific UV for a CPU because their all different.
To find out what is best for your phone try different uv's and see what works best.
Sent from my SCH-I500 using XDA App
Since moving up to CM7 I can't see any difference when undervolting. Could tell a difference when on FROYO however.
I'm assuming the you want to be a lower mV at higher mhz and a higher mV at a lower mhz? Correct?
Keuka79 said:
just curious about what might be a safe undervolt range to set my CPU at? I've got the 1.3ghz set at -75 and the middle frequencies at -100. I seem to be getting a little better battery life no forcecloses yet. I had a Droid x last time and the oc app just had a selection of extreme undervolt but I never remembered what the voltages were
Proud graduate of flashaholics anonymous
Click to expand...
Click to collapse
those are my exact settings aswell... I see some going -150 uv on the lower frequencies, but i have not tried it yet. I know from 1000-1300mhz -75 is all i can go without freezing.
Yeah I tried to push 1.0 to 1.3 over -75 and it locks up and reboots.
Proud graduate of flashaholics anonymous
Related
tegrak promised he was going to upgrade his tegrak overclock app to work with all kernels and it looks like he's delivered! (see http://forum.xda-developers.com/showthread.php?t=1101355
I'd installed the free version as tegrak suggested a couple months back to see if it would work with my phone. It didn't, but yesterday, it upgraded to version 0.6.0.9. I had a bullet kernel that allows OC to 1.2 ghz with no voltage adjustments. The free version doesn't OC but will let you know if the paid version will work with your phone.
The paid version ($2) works. At least on my phone it does. Maybe no need for special kernels anymore. I haven't tried it with a rom that doesn't support OCing and overvolting yet but I'm going to do that this weekend.
The higher speeds need overvolting and there's no directions on how to do it. tegrak overclock will officially only let you go to 1.3 ghz but if you select the fine "optimization" you can go way up beyond that. I immediately zoomed it up to 1600 mhz with no voltage adjustments and the phone locked up and started buzzing. I had to pull the battery and reboot. Don't do that! Go up a little at a time and then let the stability test run (pull down notification screen to see how many seconds are left.)
There are buttons to adjust by small amounts. You should be able to set it at 1.4 ghz with a little overvolting without too much trouble. Right now my phone is stable at 1524 mhz and core voltage of 1361 mv using an "on demand" profile of 100-1524mhz and it's not hot. Quadrant score at that setting was 3201. That's pretty good for a kernel that only supports OC to 1200 mhz.
I couldn't get to 1600 yet without locking up the phone -- needs more overvolting I figure.
If you have sgs overclock, after you up the speed, it will have the top speed bar at the bottom 100mhz and you will have to drag it up there. I don't know why this should make a difference but my quadrant score was in the 2700s before I did it.
Write down your figures 'cause if the phone locks up and you have to pull battery and reboot, the phone will ask you if you really want that speed that didn't work, and when you say "no" you'll be back at the beginning again.
There is more discussion in the 19000 forum on tegrak's 2.3.4 kernel (for I9000) and the OC app. according to tegrak's guide, the Galaxy S can be stably undervolted using his utility at various speeds and I guess save battery life:
speed standard core voltage undervolt
1000mhz 1275 mv 1225 mv
800mhz 1200 mv 1125 mv
400mhz 1050mv 950mv
200mhz 950mv 825mv
100mhz 950mv 800mv
There is a dialog in the app to set the voltage for each of these speeds in addition to setting the OC speed and voltage. I'm not sure whether tegrak has tested this on the various flavors of Galaxy S or whether he means the I9000. I'll just have to see.
here is his figure for a 1200mhz OC.
speed standard core voltage overvolt
1200mhz 1275 1310
Seems to be working good!
All nonsense and misspelled words courtesy of my unsupported samsung device.
Hello, I have an HTC thunderbolt, rooted with CM7, and installed setcpu and used autodetect and I put the CPU govern to "conservative" with minimum GHz 245 and maximum 1.8GHz and I am just wondering if this is safe? because I read some threads about Compatible kernels and I jave no idea what that means, they were also talkimg about undervolting, which agaim I do not know means, anyways thanks for reading
Watoy said:
Hello, I have an HTC thunderbolt, rooted with CM7, and installed setcpu and used autodetect and I put the CPU govern to "conservative" with minimum GHz 245 and maximum 1.8GHz and I am just wondering if this is safe? because I read some threads about Compatible kernels and I jave no idea what that means, they were also talkimg about undervolting, which agaim I do not know means, anyways thanks for reading
Click to expand...
Click to collapse
If your device will run reliably at 1.8GHz, then there's not much to worry about as long as the voltage isn't too high. High voltages and heat can shorten the SoC's life or kill it altogether. Generally, I don't recommend running that fast because the performance increase isn't as great from 1.6GHz to 1.8GHz as it is from 1.41GHz to 1.6GHz. These cores weren't meant to run any faster than 1.5GHz really, and anything past that doesn't increase the performance as much as the numbers might suggest.
Also, a conservative governor probably isn't ideal if you're willing to run a device that fast. That governor would seldom, if ever, use that kind of speed. I'd suggest smartass, smartassV2, ondemand, or interactive if you're looking to see a good boost in performance.
If you're looking for an app to view and adjust voltages, IncrediControl works well. For all the nitty-gritty of overclocking, I'd recommend reading my OC guide. It's in the "Second Post" of my Q&A thread. If you've got any questions, feel free to hit me up.
So does over clocking just speed things up? What are the real benefits
Boggus said:
So does over clocking just speed things up? What are the real benefits
Click to expand...
Click to collapse
I look at it like this. My screen eats up most of my battery. The less time it's on, the better. Overclocking uses more power for the CPU, but the display spends less time telling you it's waiting. It doesn't really add functionality, just speed and efficiency.
I'm wondering what settings people are using for undervolting. I'm running Neutrino v2.5 GT with the patch and supercharger. Seems like if I set anything above 50 I get a reboot. Kinda a total noob when it comes to UV so any help would be appreciated
I would like to know this too please.
Sent from my MB860 using XDA
I'm currently running this:
1300: -150
1200: -100
1100: -50
1000: -50
800: -50
456: -100
216: -150
I've tried lower but I started getting reboots, at these voltages it's been good for a few days now.
Every Atrix isn't the same so while one set may work for one persons phone it may not on yours. One thing, though. DO NOT break the 100mv limit. Meaning if 1GHz is at 1000mv, then the step below it (912MHz if you're on a 1GHz kernel) shouldn't go below 900mv. This is a limit on the Tegra 2 set by Nvidia and going passed the 100mv limit cancels out undervolting across the board. Meaning if 1GHz is at 1000mv and you set 912MHz to 875mv or lower, it won't matter what the undervolting application says. Your phone will NOT be undervolted. I'm able to under volt fairly well and I usually stick to 1GHz kernels to save on battery. If you're using a 1GHz kernel, try leaving the first two frequencies alone (don't change 1GHz or 912 MHz). Here's what I've been using on CM9 with faux123's 1GHz kernel:
1GHz - no change
912MHz - 25
750MHz - 50
608MHz - 95
456MHz - 105
312MHz - 115
216MHz - 135
This has been stable for me since I got my Atrix and works really well on a couple of my friend's Atrix. If this causes reboots then set 912MHz back to no change at 950mv and I can almost promise you the problem will be fixed. Also, if you're a battery saving whore like I am and you're on AT&T, flash the N_01.100.00R European radio. This will allow you to set your phone to GSM Only by dialing *#*#4636#*#* and changing GSM auto (PRL) and use the EDGE (2G) service providing you with MUCH better battery life. If you need the higher speeds then switch back or simply reboot the phone. Hope this information helps.
On a side note, underclocking is another useful way to conserve battery. I never did this on GB ROMs as everything became terribly slow, but on ICS, underclocking barely hinders performance. I have mine underclocked at 750MHz and in terms on scrolling, opening apps, playing games, web surfing, even moving through homescreens, it still outperformed any GB ROM I've used at 1GHz and even 1.3GHz. Even benchmarks are fairly the same. Going on 53 hours with HEAVY usage. e.g. Web browsing all day, texting, few phone calls, and playing games.
Sent from my AT&T CM9 MB860 on EDGE
I'm on Turl's CM9 build v9 with faux123's 1GHz kernel and I undervolt to:
1GHz - 950 mV (-50)
912 - 930 mV (-20)
750 - 830 mV (-70)
608 - 730 mV (-120)
456 - 630 mV (-170)
312 - 530 mV (-245)
216 - 430 mV (-320)
I tried an extreme that someone else had on their Atrix with 216 MHz at 400 mV, and 100mV increment up and my phone became unstable (with 912 MHz at 900mV). Following some other people's advice to undervolt less at 912MHz I arrived at my current setting that is stable for my phone.
I'm using Neutrino 2.2 with the latest faux kernel because I couldn't get phone to deep sleep with 2.5 even with the update installed.
I used pimp my cpu and managed these undervolts, it wouldn't let me go past -250mV is that normal?
1300Mhz -125 mV = 1175 mV
1200Mhz -100 mV = 1100 mV
1100Mhz -50 mV = 1050 mV
1000Mhz -50 mV = 950 mV
800Mhz - 175 mV = 725 mV
456 Mhz - 200 mV = 600 mV
216 Mhz - 250 mV = 500 mV
I was quite surprised of the jump in mV to 1000Mhz, it just wouldn't take any lower voltage without freezing. But I have extended my battery life loads by using pimpmycpu its cool as. Also from the above post does that mean my 800Mhz undervolt is ok or not?
Enkidu1978 said:
I'm using Neutrino 2.2 with the latest faux kernel because I couldn't get phone to deep sleep with 2.5 even with the update installed.
I used pimp my cpu and managed these undervolts, it wouldn't let me go past -250mV is that normal?
1300Mhz -125 mV = 1175 mV
1200Mhz -100 mV = 1100 mV
1100Mhz -50 mV = 1050 mV
1000Mhz -50 mV = 950 mV
800Mhz - 175 mV = 725 mV
456 Mhz - 200 mV = 600 mV
216 Mhz - 250 mV = 500 mV
I was quite surprised of the jump in mV to 1000Mhz, it just wouldn't take any lower voltage without freezing. But I have extended my battery life loads by using pimpmycpu its cool as. Also from the above post does that mean my 800Mhz undervolt is ok or not?
Click to expand...
Click to collapse
Your phone isn't undervolted at all since you broke the 100mv limit. Might show that you are, but the phone is still running with high power consumption.
Also, if you wanna go lower, get SetCPU. Goes all the way down to -500mv and doesn't lock you to increments of 25. You can set any value such as -69mv, -146mv, etc.
Sent from my AT&T CM9 MB860 on EDGE
I'm using the 1.3ghz kernel anyone got safe recommendations not breaking the 100mw rule
Sent from Atrix 4g Neutrino 2.5
I'm running faux 1.3 too n that's wat I'm trying to figure out too. Because according to what you're saying I'd only be able to UV at lowest 2 or 3 speeds
squee666 said:
I'm using the 1.3ghz kernel anyone got safe recommendations not breaking the 100mw rule
Sent from Atrix 4g Neutrino 2.5
Click to expand...
Click to collapse
As I stated earlier, not ever phone is built the same. What works for someone else may not work for you.
CREAPFACE said:
I'm running faux 1.3 too n that's wat I'm trying to figure out too. Because according to what you're saying I'd only be able to UV at lowest 2 or 3 speeds
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Click to collapse
The best idea is to do minimal undervolting on higher frequencies as they need more power and do the more intense undervolting on lower frequencies.
I changed mine up, a bit. This is what I'm working with, now:
1GH no change = 1000mv
912MHz -25mv = 925mv
750MHz -50mv = 850mv
608MHz -100mv = 750mv
456MHz -150mv = 650mv
312MHz -225mv = 550mv
216MHz -300mv = 450mv
To me, undervolting is a way to mainly save power, further, when the screen is off while conserving as much as I can when I'm actually using the phone.
Sent from my AT&T CM9 MB860 on EDGE
Pretty sure it just the rom. Switched to redpill to test it and with undervolting I had %60 battery left after all day of heavy use.
Im on jokersax 0.33, installed setcpu, but i dont see voltages menu at all.
Can somebody guide me pls
Sent from my MB860 using XDA
Its the 3rd tab at the top. It says main, then profiles, then voltages. Not sure if its on there if your not running a custom kernel
CREAPFACE said:
Its the 3rd tab at the top. It says main, then profiles, then voltages. Not sure if its on there if your not running a custom kernel
Click to expand...
Click to collapse
Thats y maybe,.. i am on kernel which comes with jokersax ROM, so probably i cannot get it ;(
EDIT: Yes, i installed http://www.jokersax.com/upload/Atrix-CM9-Kernel-025b-ext4-1.00GHz.zip and i got Voltage tab.
I am testing Neroga settings now.
akyboy said:
Thats y maybe,.. i am on kernel which comes with jokersax ROM, so probably i cannot get it ;(
EDIT: Yes, i installed http://www.jokersax.com/upload/Atrix-CM9-Kernel-025b-ext4-1.00GHz.zip and i got Voltage tab.
I am testing Neroga settings now.
Click to expand...
Click to collapse
Phone froze 2 times and restarted, restoring from standby.
Any ideas what i should change?
Tnx
You have to start out pretty low and work ur way up til u don't get any reboots. Also I'd try faux123's kernel the 1.3 is where its at
I couldn't find any voltage tab
I've tried the standard kernel that comes with the neutrino and faux 1,45ghz for cm7...
Any suggestion?
Neroga said:
Every Atrix isn't the same so while one set may work for one persons phone it may not on yours. One thing, though. DO NOT break the 100mv limit. Meaning if 1GHz is at 1000mv, then the step below it (912MHz if you're on a 1GHz kernel) shouldn't go below 900mv. This is a limit on the Tegra 2 set by Nvidia and going passed the 100mv limit cancels out undervolting across the board. Meaning if 1GHz is at 1000mv and you set 912MHz to 875mv or lower, it won't matter what the undervolting application says. Your phone will NOT be undervolted. I'm able to under volt fairly well and I usually stick to 1GHz kernels to save on battery. If you're using a 1GHz kernel, try leaving the first two frequencies alone (don't change 1GHz or 912 MHz). Here's what I've been using on CM9 with faux123's 1GHz kernel:
1GHz - no change
912MHz - 25
750MHz - 50
608MHz - 95
456MHz - 105
312MHz - 115
216MHz - 135
This has been stable for me since I got my Atrix and works really well on a couple of my friend's Atrix. If this causes reboots then set 912MHz back to no change at 950mv and I can almost promise you the problem will be fixed. Also, if you're a battery saving whore like I am and you're on AT&T, flash the N_01.100.00R European radio. This will allow you to set your phone to GSM Only by dialing *#*#4636#*#* and changing GSM auto (PRL) and use the EDGE (2G) service providing you with MUCH better battery life. If you need the higher speeds then switch back or simply reboot the phone. Hope this information helps.
On a side note, underclocking is another useful way to conserve battery. I never did this on GB ROMs as everything became terribly slow, but on ICS, underclocking barely hinders performance. I have mine underclocked at 750MHz and in terms on scrolling, opening apps, playing games, web surfing, even moving through homescreens, it still outperformed any GB ROM I've used at 1GHz and even 1.3GHz. Even benchmarks are fairly the same. Going on 53 hours with HEAVY usage. e.g. Web browsing all day, texting, few phone calls, and playing games.
Sent from my AT&T CM9 MB860 on EDGE
Click to expand...
Click to collapse
Can you explain exactly how you set your phone to 2G only? Reason I'm asking is 'cause I flashed the radio you mentioned and tried to use 2G only, but it keeps resetting back to gsm/cdma (prl).
Switched to neutrino EE n haven't had a problem since. Battery will last me 2 days
Does anyone with a kernel that allows CPU and voltage adjustments know what the lowest stable voltages are for each frequency? It's difficult to test if the voltages are stable across all of the frequencies, which is why I'm hoping others have worked this out already.
Has anyone done research into this and come up with solid numbers? Also, is there an app that stress tests each available frequency? It's pointless using something like antutu to stress test since it will just keep the cpu at my max of 1600mhz, whereas I need to test all of them.
Thanks in advance.
Hello,
I'm writing this thread to know which processor options would be optimal in our minis. The best settings, which give me the best performance/battery, I've found are:
CPU Governor: SMARTASSV2 (Default)
Min Freq: 19MHz
Max Freq: 748MHz
Undervolt: TRUE
I'm also using Apex Launcher. Which settings are you using?
Note: This are just my results, be careful when you change your processor settings.
fuchini said:
Hello,
I'm writing this thread to know which processor options would be optimal in our minis. The best settings, which give me the best performance/battery, I've found are:
CPU Governor: SMARTASSV2 (Default)
Min Freq: 19MHz
Max Freq: 748MHz
Undervolt: TRUE
I'm also using Apex Launcher. Which settings are you using?
Note: This are just my results, be careful when you change your processor settings.
Click to expand...
Click to collapse
Whats the purpose of Undervolting when you have it's max frequency as overclock?
zvdelossantos said:
Whats the purpose of Undervolting when you have it's max frequency as overclock?
Click to expand...
Click to collapse
Because it undervolts on every frequency below 600, and his minimum is 19, so when the phone is idle or doesn't need all of the processing power he saves battery
The SmartAss governor is very good at picking the right frequencies for any given job, so it doesn't allways run on 748Mhz, not even when you're using the phone.
SmG67 said:
because it undervolts on every frequency below 600, and his minimum is 19, so when the phone is idle or doesn't need all of the processing power he saves battery
Click to expand...
Click to collapse
That is the same very purpose of SMARTASSV2 to undervolt your device when idle or on sleepmode and overclocks it when on process. So ticking the undervolt wont affect your device because the one that manage the frequency will be the COUgovernor.
zvdelossantos said:
That is the same very purpose of SMARTASSV2 to undervolt your device when idle or on sleepmode and overclocks it when on process. So ticking the undervolt wont affect your device because the one that manage the frequency will be the COUgovernor.
Click to expand...
Click to collapse
The SmartAss Governor only governs the frequencies, not the voltage that the Processor uses. there is a difference between the speed the cpu runs on (Mhz) and the amount of Electricity (Volts) it gets fed
Say Qualcomm has said it needs 5 volts to run at the stock frequency of 600Mhz, then the processor will always get 5 Volts, no matter which frequency it uses.
Undervolting will feed it less than the 5Volts when the frequencies are lower, SmartAss won't do that, it will run the 19Mhz still on 5Volts.
(Voltages are examples, i don't know the exact values, but I know that running on 122 or less will be stable on less than half of the nominal power)
SmG67 said:
The SmartAss Governor only governs the frequencies, not the voltage that the Processor uses. there is a difference between the speed the cpu runs on (Mhz) and the amount of Electricity (Volts) it gets fed
Say Qualcomm has said it needs 5 volts to run at the stock frequency of 600Mhz, then the processor will always get 5 Volts, no matter which frequency it uses.
Undervolting will feed it less than the 5Volts when the frequencies are lower, SmartAss won't do that, it will run the 19Mhz still on 5Volts.
(Voltages are examples, i don't know the exact values, but I know that running on 122 or less will be stable on less than half of the nominal power)
Click to expand...
Click to collapse
Nice yes yes. good reply. now I know whats the use of undervolting. thanks for the explanation
SmG67 said:
The SmartAss Governor only governs the frequencies, not the voltage that the Processor uses. there is a difference between the speed the cpu runs on (Mhz) and the amount of Electricity (Volts) it gets fed
Say Qualcomm has said it needs 5 volts to run at the stock frequency of 600Mhz, then the processor will always get 5 Volts, no matter which frequency it uses.
Undervolting will feed it less than the 5Volts when the frequencies are lower, SmartAss won't do that, it will run the 19Mhz still on 5Volts.
(Voltages are examples, i don't know the exact values, but I know that running on 122 or less will be stable on less than half of the nominal power)
Click to expand...
Click to collapse
nice to see some piece of truth over here (not perfect, but well explained)
de-noobing is good from time to time
xda is overcrowded of false answers given by people thinking they know but don't
anywhere, at anytime, newbies asking get fake answers from people wanting to help but failing to do so , due to lack of knowledge.
as everyone, i might be one of these, but try not to be.
make sure you know what you are talking about before spreading your (incomplete or false) knowledge
this was my thought of the day
matmutant said:
nice to see some piece of truth over here (not perfect, but well explained)
de-noobing is good from time to time
xda is overcrowded of false answers given by people thinking they know but don't
anywhere, at anytime, newbies asking get fake answers from people wanting to help but failing to do so , due to lack of knowledge.
as everyone, i might be one of these, but try not to be.
make sure you know what you are talking about before spreading your (incomplete or false) knowledge
this was my thought of the day
Click to expand...
Click to collapse
Would you mind to add that to FAQs to avoid false answers?
Tom.K said:
Would you mind to add that to FAQs to avoid false answers?
Click to expand...
Click to collapse
of course i don't
do you mean only the explanation about oc/uv ?
i can add it, note that a while ago i wrote pieces of information about those things
Hey, thanks a lot for all the replies. I had no idea why my settings worked like i wanted.