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    XPS m1330 - I want to extend the battery life

    Discussion in 'Dell' started by plotter, Jan 14, 2008.

  1. plotter

    plotter Newbie

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    I want to buy dell xps m1330 and I want to know how I can extend the battery life?
    (I mean undervolting, bus speed downclocking, or shut down the nVidia card and use only x3100)
    Has anyone experience or advice in it?

    thx.
    John
     
    plotter, Jan 14, 2008
    #1
  2. Brickmen

    Brickmen Notebook Consultant

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    i currently undervolt all my computers processors to make them cooler using a RMclock utility: http://cpu.rightmark.org/download.shtml (go down to Rm clock and get EXE)
    You just need to adjust the P state transistors and voltage and the processor runs much cooler (no fan at all on 6400), this saves battery life too. (but i have not tested on santa rosa)

    For the graphics card try Rivatuner, its really complicated but read the documentation and you should get it. ( http://www.guru3d.com/index.php?page=rivatuner).

    Best of luck.
    BM
     
    Brickmen, Jan 14, 2008
    #2
  3. vengance_01

    vengance_01 Notebook Deity

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    You don't have the 8400GS and Intel card, its either or. I second the RMClock software. Works like a champ. My T7500 had a stock vcore of 1.25 and I dropped it down to 1.125 and all of my other voltages as well. :) Don't worry about your gpu. It already has power saving features and since we can't lower the voltage on the card, its pretty much pointless
     
    vengance_01, Jan 14, 2008
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  4. nizzy1115

    nizzy1115 Notebook Prophet

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    Do you have the 6 or 9 cell battery?
     
    nizzy1115, Jan 14, 2008
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  5. plotter

    plotter Newbie

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    The config:
    dell xps m1330
    T7500 2,2GHz / LED screen / 2 GB DDR2 667 / 160 GB 7200RPM / 128 MB NVIDIA 8400M GS / Black casing /
    Intel wireless-N / 6 cell batteries / Fingerprint / Bluetooth

    Vengance,
    How long is your batt.life on this voltage?
    What is the absolute min. voltage by santa rosa?
     
    plotter, Jan 14, 2008
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  6. nizzy1115

    nizzy1115 Notebook Prophet

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    You have the 6 cell battery. You can get the 9 cell battery which will last about 30% longer.
     
    nizzy1115, Jan 14, 2008
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  7. vengance_01

    vengance_01 Notebook Deity

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    Its tough to tell, but I say I would get a solid 2:30-300 hours with the screen at 4/6 brightness, Wifi and me surfing. I am still working on getting my voltage lower when I am idle. When the cpu is at 800MHZ, voltage is suppose to drop to .85 volts. Normally I keep my machine locked at 1.0 volt and the 7-8 multiplier. Plenty for surfing, but still saves some battery life.
     
    vengance_01, Jan 14, 2008
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  8. funkmasterta

    funkmasterta Notebook Evangelist

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    Hmm, you might have a defective system. My first m1330 got that kind of runtime with these specs:

    vista, T7500, CCFL, 1gb ram, 250gb hd, BT off, brightness FULL, wifi on, no optical usage, no undervolting, surfing web

    Then, I got a replacement system and consistently get 4hrs runtime under the same conditions.

    If you're getting 2.5-3hrs, that's not normal.
     
    funkmasterta, Jan 14, 2008
    #8