DroidForums.net | Android Forum & News
This is a sample guest message. Register a free account today to become a member! Once signed in, you'll be able to participate on this site by adding your own topics and posts, as well as connect with other members through your own private inbox!
clock frequency voltages
- Thread starter jeffv2
- Start date
cupfulloflol
Senior Member
Since I haven't overclocked I haven't undervolted the 1.35GHz slot.
1175mV @ 1.2GHz
975mV @ 920MHz
875mV @ 700MHz
750mV @ 320MHz
Still plan on going lower, but so far these voltages have been stable for me.
1175mV @ 1.2GHz
975mV @ 920MHz
875mV @ 700MHz
750mV @ 320MHz
Still plan on going lower, but so far these voltages have been stable for me.
I'd be a little careful with pushing undervolts too much. For one, it can and will lead to instability if you get very aggressive (of course, you can bump things back up). But from what I've read over on xda from some of the devs, undervolting too much can lead to issues where the phone may still seem stable but will internally mess some things up and not go into deep sleep correctly or quickly, thus resulting in more battery drain in the long run. Here is what I have managed so far:
1225mv @ 1.35ghz
1150mv @ 1.2 ghz
1050mv @ 920mhz
975mv @ 700mhz
775mv @ 320mhz
Btw, you should also check whether your voltages are actually being applied. Some of the kernels seem to allow undervolting in SetCPU but are actually undervolted by a fixed amount by the kernel developers, and SetCPU changes have no effect on the actual voltages on the processor. An easy way to test it is to drop the 1.2 or 1.35 GHz to something really low like 1000mV and seeing if you have to do a battery pull to reboot your phone (make sure SetCPU isn't set to apply voltages at Boot). I'm using the Jame Bond kernel over on XDA and it definitely allows undervolting as I've had my phone freeze up when I push below 775mV @320MHz
1225mv @ 1.35ghz
1150mv @ 1.2 ghz
1050mv @ 920mhz
975mv @ 700mhz
775mv @ 320mhz
Btw, you should also check whether your voltages are actually being applied. Some of the kernels seem to allow undervolting in SetCPU but are actually undervolted by a fixed amount by the kernel developers, and SetCPU changes have no effect on the actual voltages on the processor. An easy way to test it is to drop the 1.2 or 1.35 GHz to something really low like 1000mV and seeing if you have to do a battery pull to reboot your phone (make sure SetCPU isn't set to apply voltages at Boot). I'm using the Jame Bond kernel over on XDA and it definitely allows undervolting as I've had my phone freeze up when I push below 775mV @320MHz
Last edited:
Ah, good to know. I just wanted to put it out there so someone didn't try to use your voltages right off the bat and then come back here to rage at you for breaking his/her phone 
Looks like you have a great chip in your phone if you are stable at 700mV @320MHz. 775 is the lowest I could go, and I'm staying at 800mV just to ensure being rock stable. Still, battery life has been awesome. With Wifi on, I still get a little less than 1% per hour drainage overnight. And that is without any juice defender tricks...and all google apps pushing updates/email to my phone.
Looks like you have a great chip in your phone if you are stable at 700mV @320MHz. 775 is the lowest I could go, and I'm staying at 800mV just to ensure being rock stable. Still, battery life has been awesome. With Wifi on, I still get a little less than 1% per hour drainage overnight. And that is without any juice defender tricks...and all google apps pushing updates/email to my phone.nuclearbier
Member
1200mV @ 1350MHz
1150mV @ 1200MHz
1050mV @ 920MHz
950mV @ 700MHz
800mV @ 350MHz
Sent from my Galaxy Nexus using Tapatalk
1150mV @ 1200MHz
1050mV @ 920MHz
950mV @ 700MHz
800mV @ 350MHz
Sent from my Galaxy Nexus using Tapatalk
lazarus2297
Member
so i have been flashing and doing this stuff for awhile but never really got into undervolting.. I am running axiom 2.4 with his apex kernal (the one that comes with the rom) I have used setcpu in the past (mainly to overclock OG Droid, DINC2)
I don't mind undervolting if it will help battery life some while not cutting on performance too much..
can someone either explain or give me a link that would help me better understand undervolting?
I don't mind undervolting if it will help battery life some while not cutting on performance too much..
can someone either explain or give me a link that would help me better understand undervolting?
cupfulloflol
Senior Member
http://www.droidforums.net/forum/rescue-squad-guides/47871-overclocking-101-a.html <-- that thread is a general overclocking guide, but hits voltages too. Of course it was designed for the OG Droid, but same basic ideas remain. I haven't actually read it in a while to remember how much details he goes into about voltages. There is much more detailed information out there though, if that doesn't cut it for you.
xliderider
Active Member
My Gnex is running RootzBoat and I'm using the same kernel as you (Fab's). However, my SetCPU screen does not show the VOLTAGE tab between the PROFILE and ADVANCE tabs. What am I missing?
Edit: NVM, I installed the AOSP rom codename android and I now have the Voltage tab.
Last edited:
What are you running for your governor and min sample rate?
________________________
You had me at herro
________________________
You had me at herro
I see that you are on Verizon when I looked at your radio version on screenshot. Can you share what kind of battery life are you getting with setup rom and UV settings? In terms of screen time keep awake time and % of CPU used by android os.
Sent from my Galaxy Nexus using DroidForums
FYI - if you're on this site, you have a Verizon phone.