Dell Inspiron 4100 motherboard CPU upgrade

By eyemfedup2
Dec 15, 2009
  1. does anyone know what is the fastest CPU i can put in this laptop
    I'm assuming its a pIII
    Intel sl643 1 GHz in it now
    and just wondering why when i go to system info it says 1.7GHz ???
    i have it apart, i might as well see if i can upgrade the CPU
  2. Tedster

    Tedster Techspot old timer..... Posts: 6,000   +15

    the mobo may be overclocked. Without an exact motherboard model #, it is hard to tell what can go in your system.
  3. eyemfedup2

    eyemfedup2 TS Enthusiast Topic Starter Posts: 69

    but curious why it say 1.7
    its not over clocked??
  4. tipstir

    tipstir TS Ambassador Posts: 2,392   +106

    PIII have Intel speed gizmo to reduce the power down to save battery. You can disable that in the BIOS and make the CPU run at full speed. So you have 1.7GHz that's quick! Some PIII have removable CPU where you can upgrade the mobile CPU. If you got 1GB of RAM and the HDD is spinning at 7,200RPMs you can install Windows 7 Ultimate and get away it on PIII.
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