undervolt experience

This is a discussion on undervolt experience within the Nexus S forums, part of the Google Phones category; did a search but nothing has come up.... in an effort to prolong battery life I have started using the undervolt feature of setcpu, so ...

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Thread: undervolt experience

  1. #1
    Junior Member kotaro's Avatar
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    Jun 2010
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    undervolt experience

    did a search but nothing has come up....

    in an effort to prolong battery life I have started using the undervolt feature of setcpu,

    so far it seems the lowest i can go is 1225mv@1ghz, and 800mv@100mhz, with no crashing or freezing. Havent really altered other speeds as the phone is usually at 100mhz or 1ghz....

    Battery life is not spectacular but better. (I have disabled deep sleep, for voip related issues.) Otherwise im sure battery life would be more than sufficient.

    was wondering what values others were using...

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  3. #2
    Junior Member Azrael38's Avatar
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    Nov 2011
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    Same experience here with the lack of undervolting information out there. I am just starting out with undervolting and will be testing most of the frequencies with StabilityTest for at least 10 minutes at each clock speed at each voltage I try (anyone know if longer/shorter than 10min testing required?). Will repost when I have some test data.

    ---Edited---

    Test Data:

    Freq Stk Stbl Slctd
    100 950 625 650
    200 950 775 800
    400 1050 875 900
    800 1200 1100 1125
    1000 1250 1175 1225
    1100 1290 1250 1275
    1200 1330 1300 1330
    1300 1390 1390 1390 *Did not attempt undervolting
    1440 1440 1440 1440 *Did not attempt undervolting

    Freq: Frequency of the processor (MHz)
    Stk: Stock voltage (mV)
    Stbl: Lowest voltage (mV) that ran for at least 10 minutes on StabilityTest app (Classic Stability Test) without crashing or restarting, tested in 25mV increments
    Slctd: Currently voltage (mV) running on phone with a ~25mV safety margin above the supposedly stable voltage

    I did not attempt to undervolt 1300/1440MHz as the results for 1200MHz indicates that power savings would not be much.

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