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    i7 undervolt

    Discussion in 'Dell XPS and Studio XPS' started by Snapdragon, Nov 21, 2010.

  1. Snapdragon

    Snapdragon Notebook Geek

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    Hey guys,

    does anyone know if it's possible/beneficial to undervolt a laptop i3/i5/i7 CPU? I have the 740qm and I was thinking if it could be done, battery life would be improved. I tried it on my desktop i7 just as an experiment and managed to undervolt it quite a lot before it became unstable.

    Any info appreciated,
    thanks.
     
    Snapdragon, Nov 21, 2010
    #1
  2. Theprom

    Theprom Notebook Consultant

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    well thats gr8 to hear that atleast a desktop i7 has uv'ed.Can you please tell the name of the software.I dont think its RMCLOCK utility!
    Cheers!
     
    Theprom, Nov 21, 2010
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  3. moral hazard

    moral hazard Notebook Nobel Laureate

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    I'm going to guess he used bios options to change the voltage.

    With a notebook, your best bet would probably be a voltage regulator pin mod.

    A CPU pin mod would be possible, but not convenient.
     
    moral hazard, Nov 21, 2010
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  4. Snapdragon

    Snapdragon Notebook Geek

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    Right, so there's no software that can be used to undervolt the CPU?

    And yes you're correct, I used the BIOS to undervolt my desktop CPU. I have the i7 950. When set to auto voltage it was about 1.25v at stock clocks under 100% load. I managed to get it down to 1.04v. However i've overclocked the CPU now so the voltage is significantly higher.
     
    Snapdragon, Nov 21, 2010
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  5. moral hazard

    moral hazard Notebook Nobel Laureate

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    Not that I know of, though there might be something out there.
     
    moral hazard, Nov 21, 2010
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  6. sgogeta4

    sgogeta4 Notebook Nobel Laureate

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    Don't think anything exists yet. CPUGenie is also restricted up to the last generation C2Ds.
     
    sgogeta4, Nov 21, 2010
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  7. goha01

    goha01 Notebook Geek

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    You may wanna try Throttlestop.I think it is somewhere in this forum.
    Or,just Google for it.Make sure you get the latest version.
     
    goha01, Nov 22, 2010
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  8. seeker_moc

    seeker_moc Notebook Virtuoso

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    Throttle stop, or any software, can't undervolt the core i-series chips. They have a power control module on die in the CPU. You'd need to mod the BIOS somehow to do it.
     
    seeker_moc, Nov 22, 2010
    #8