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    Possible to damage a cpu by undervolting?

    Discussion in 'Asus' started by noxxle99, Aug 10, 2007.

  1. noxxle99

    noxxle99 Notebook Deity

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    Is it possible to damage a cpu by undervolting? or shorten its life spawn? I am aware that over-clocking can do this, but until recently I thought under-volting was perfectly safe. Then I started reading about undervolting actually increasing amperage, which can damage a cpu over time. Is this something to be concerned about?

    I have a pentium M 1.7 under-volted to .700 for the lowest multiplier and 1.228 for the highest multiplier (its default voltage according to RMClock was .988 and 1.308 respectively). By undervolting, when running on AC, my average temps are now around 48C under normal load, and 72 under really intense gaming. Before undervolting, these tempes were 52C and 76C.
     
    noxxle99, Aug 10, 2007
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  2. baddogboxer

    baddogboxer Notebook Deity

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    I have not heard of that. What happens is becomes unstable and data corruptions or shut down happen.


    Ask a MOD to move this to the Hardware aftermarket section the response should be so much better and will get the answer. This question has nothing to do with Asus, so put it where it will be seen.
     
    baddogboxer, Aug 11, 2007
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  3. Jumper

    Jumper Notebook Deity

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    Nope. Whoever said that was wrong.

    Voltage = Current * Resistance -> V = IR. CPU has a fixed resistance and is having a fixed voltage applied, so I = V/R. Decreasing V will therefore decrease I proportionally.

    Also, Power, P = VI = V * (V/R) = V^2 / R, so decreasing the voltage also decreases power usage, and therefore heat output.
     
    Jumper, Aug 11, 2007
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