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Cause of watt difference for Haswell Core I5 processor models ?

Discussion in 'Electronic Design' started by Skybuck Flying, Jul 22, 2013.

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  1. Hello,

    What is the cause of the watt difference for Intel's Haswell Core I5
    processor models ?

    This link shows some different models:

    http://en.wikipedia.org/wiki/Haswell_(microarchitecture)

    I suspect the watt difference is because some models are running on
    different clock speeds ?

    Some further questions:

    Can the top model (84 watts) be under clocked ? At how many different speeds
    can it run ?

    Also if the top model can be under clocked and there is further little
    difference between the models, than the lower watt models don't make any
    sense ?

    Bye,
    Skybuck.
     
  2. So far I can only think of two reasons:

    1. S and T models for customers that don't know how to underclock or don't
    have motherboards with such abilities.
    2. Perhaps S and T models don't run well at high frequencies because of
    fabrication flaws, so they might still run stable at lower clocks ?

    Bye,
    Skybuck.
     
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