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    T500 wattage for pre-installed Vista and clean-installed XP

    Discussion in 'Lenovo' started by heavenfire, Oct 14, 2008.

  1. heavenfire

    heavenfire Notebook Guru

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    In the preload Vista, I can get 7.86W. In a clean-installed XP, I can get 8.73W. It seems Vista are more efficient when the system is ready. However, it costs much much more time and power to start Vista than XP. Therefore I think windows XP is also a good choice for battery life.

    In XP, when I use brightness level 5 and wired mouse, I get 10.48W. Then I open the sound and start to watch a 848*480 rv10 format rmvb file. The power consumer is between 12.5W-14W.

    How is it compared to T400? My system is T500 with LED screen.
     
    heavenfire, Oct 14, 2008
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  2. srunni

    srunni Notebook Deity

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    The problem is probably that the XP drivers aren't optimized.
     
    srunni, Oct 14, 2008
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  3. receph

    receph Notebook Evangelist

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    This drives me crazy. How you drop down to 8.xxW, I have no idea.

    I have the T400 with the following:

    WinXP SP3
    P8600
    2Gb
    160Gb, 5400rpm
    dedicated card (almost always off, so please don't tell me to switch to integrated)
    7-1 card reader
    CD-R and DVD, disabled in power settings
    WXGA+ LED
    intel 5300
    Camera (off)
    fingerprint reader
    bluetooth (off)

    with this, and no programs running, display set at minimum brightness, I get 9.8 W, not the 8 something you get.

    What are your configs?

    Edit: I am also running a Ramdisk and have "junction"ed my temp and internet logs directories there, so hard drive access is minimal, as I can tell from the light
     
    receph, Oct 15, 2008
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  4. heavenfire

    heavenfire Notebook Guru

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    My configs are:
    P8600
    2GB DDR3
    320G, 5400rpm
    HD3650 graphics
    4in1 card reader
    DVD-RW
    WXGA 15.4 LED
    Camera
    fingerprint
    bluetooth
    intel 5100
    2GB turbo Memory (off because winXP doesn't support it)

    I am not using Ramdisk. What's your wattage when wireless card off? I am using wired card.
     
    heavenfire, Oct 15, 2008
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  5. receph

    receph Notebook Evangelist

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    My wattage, with the wireless card off, and the display set to lowest is 9.3W.

    The interesting thing is I remember seeing numbers in the 8s.

    What is it that is not turning off that consumes power, I wonder.

    Could it be that the ATI card not turning itself off completely, despite having selected the integrated graphics from the BIOS? But I never played around with the drivers.
     
    receph, Oct 15, 2008
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