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    SONY SR: P8400 only work at 6x 1.0v max on battery. Problem ?

    Discussion in 'VAIO / Sony' started by ohmstudiste, Nov 25, 2008.

  1. ohmstudiste

    ohmstudiste Newbie

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    Hi,

    I just bought a Sony VGN-SR19VN et I notice that when used on battery, the processor (Intel P8400) works at FID 6x VID 1.000v (1600 mhz) whatever settings I used, wheras on power supply I can use it at max FID 8x VID 1.250v (2260 mhz).
    Is this normal ? Is it a hardware or software limitation ?
    I tried every possible settings with RM CPU clock but no way to use it at full power on battery.
    Can someone confirm these results ?
    BTW i use XP SP3.
     
    ohmstudiste, Nov 25, 2008
    #1
  2. TemjinZero

    TemjinZero Notebook Evangelist

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    Sounds like a setting in your BIOS, but I can't be sure. :S
     
    TemjinZero, Nov 25, 2008
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  3. ohmstudiste

    ohmstudiste Newbie

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    You can't change anything in the SR bios, except for booting and security option.
     
    ohmstudiste, Nov 25, 2008
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  4. Phil

    Phil Retired

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    Check the Vaio control center settings. It's some where there or in other power management settings.
     
    Phil, Nov 25, 2008
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  5. eli2k

    eli2k Notebook Consultant

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    Might be due to SpeedStep, so maybe some Battery Stamina thing is kicking in. When you're off AC and on a specific power profile, it will limit the speed (and FID) so that it uses less power.
     
    eli2k, Nov 25, 2008
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  6. ohmstudiste

    ohmstudiste Newbie

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    I tried every possible settings with and without Sony Center and also RM CPU Clock to no avail.
    Could some other owner of a SR or a P8400 cpu confirm these reading (via Cpu Clock for instance) ?
     
    ohmstudiste, Nov 25, 2008
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  7. Phil

    Phil Retired

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    Phil, Nov 25, 2008
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  8. ohmstudiste

    ohmstudiste Newbie

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    Thanx a lot !
    Indeed disabling Thermal protection did the trick.
     
    ohmstudiste, Nov 25, 2008
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  9. thebigpants27

    thebigpants27 Notebook Evangelist

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    That sounds like it could do some damage in the long run....
     
    thebigpants27, Nov 25, 2008
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