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"Overclocked" frequency and Power dissipation

Discussion in 'Electronic Basics' started by Jack, Apr 11, 2007.

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  1. Jack

    Jack Guest

    What is the relationship between the "Overclocked" frequency on a CPU
    and its power dissipation?
    Thx
     
  2. CPU's are digital circuits and the old technology was to built those
    circuits in totem-pole configuration when one segment is on and the
    other off. But on transition there is a short time when both segments
    are conducting current and this is doing work (read, producing heat).
    When you overclock, two possibilities, one the clock is too fast for the
    matrix to respond and do something useful, two the whole package is
    not build to release the additional heat produced, so bye,bye CPU!

    HTH

    Stanislaw
     
  3. Roughly linearly proportionate. For example, 10% increase in clock speed ~=
    10% increase in power dissipation.
     
  4. Jacky

    Jacky Guest

    Any mathematical equations???
    Thanks
    Jack

     
  5. Greg Neill

    Greg Neill Guest

    What are you looking for, a physical motivation
    for the relationship or a practical rule of
    thumb? In other words, what do you need the
    equation for?
     
  6. Very roughly;^), dependant on linearity of the package to dissipate the
    additional linearly produced heat. (Thermodynamics, enthropy,
    refrigeration and other technical vermin)
    Note: "Don't overclock unless you know what you are doing!"

    HTH

    Stanislaw
     
  7. jasen

    jasen Guest

    yes.
     
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