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Thread: clock frequency voltages

  1. Developer
    jeffv2's Avatar
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    #1

    clock frequency voltages

    Just wanted some people to share their voltages (:

    1250mv @ 1.35ghz
    1200mv @ 1.2 ghz
    1000mv @ 920mhz
    900mv @ 700mhz
    700mv @ 320mhz

    I'm still going lower on the voltages but I'm supprised how far these numbers are from stock
    Anyone else undervolting?
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  3. Droid Ninja
    cupfulloflol's Avatar
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    #2
    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.
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    #3
    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
    Last edited by orion2001; 01-06-2012 at 12:22 PM.
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    #4
    Yeah the voltages are definitely being applied set them all to 600mv and it froze up. But I'm well aware of the risks I'm just wondering what people are going down to, my battery life has increased by like 2x. Lol

    Sent from my Galaxy Nexus using Tapatalk
  6. Senior Droid
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    #5
    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.
  7. Developer
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    #6
    370mhz is stable at 600mv lol... I put 370 as the min and Max frequency then did a stress test for around 30 seconds with no errors or freeze ups.. I got lucky with this phone, my old Droid couldn't be undervolted at all

    Sent from my Galaxy Nexus using Tapatalk
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    #7
    1200mV @ 1350MHz
    1150mV @ 1200MHz
    1050mV @ 920MHz
    950mV @ 700MHz
    800mV @ 350MHz


    Sent from my Galaxy Nexus using Tapatalk
    Samsung Galaxy Nexus (LTE)
    [ROM] AOKP JB B1
    [Kernel] Leankernel: Latest Franco Nightly


  9. Beta Team
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    #8
    Lean Kernel

    1325mV @ 1350MHz
    1225mV @ 1200MHz
    1100mV @ 920MHz
    925mV @ 700MHz
    850mV @ 350MHz
  10. Master Droid
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    #9
    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?
    John 14:6 "Jesus saith unto him, I am the way, the truth, and the life: no man cometh unto the Father, but by me."
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    #10
    I'm still playing around but I'm getting good battery life and no lag so far.

    Th3roy Roms!!!!

    Sent from my Galaxy Nexus using DroidForums: Running Axiom 2.4
    Attached Thumbnails Attached Thumbnails clock frequency voltages-uploadfromtaptalk1326079561443.png   clock frequency voltages-uploadfromtaptalk1326079574278.png   clock frequency voltages-uploadfromtaptalk1326079586591.png  
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