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    increase of Power Limit 1&2 and Icc max - lifetime of the Cpu

    Discussion in 'Sager and Clevo' started by JohnnyR8, Nov 10, 2018.

  1. JohnnyR8

    JohnnyR8 Notebook Guru

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    hello girls & guys,

    i have a general question... using a a Clevo P671HS with a 7820HK.

    To get the best performance with a little OC (including a little core increase and undervolting) out of the CPU (getting no power limit throttling or current limit throttling shown in XTU) i need to increase the default values from 45W PL1 and 56.25W PL2 and 68A Core Icc max.

    i have found settings around 90W for both PL's (the time window i left at 28sec default) and Icc max 80A where i get no throttling and temperature < 84C during benchmarking and gaming.



    And now my questions:

    - is the only limiting factor for the general lifetime of the CPU/Notebook heat?

    - if i understand it correct these are only limits - if the CPU reaches them it starts throttling... but as long i have no thermal problem it doesnt affect the lifspan of the Notebook - (the only problem i have to pay is a higher bill from my electricity-provider) ... correct? :)

    - can i also change the the values for PL and Iccmax to unlimited (or highest possible in XTU/BIOS)?

    - what are the max values the Clevo P671HS (mainboard) can handle before reseting itself to the default ones?

    - if i use the same value for PL1 and PL2 i can ignore the the "turbo boost power time window"?

    thanks for your advice :)
     
    JohnnyR8, Nov 10, 2018
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  2. Meaker@Sager

    Meaker@Sager Company Representative

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    Lifetime is going to be linearly impacted by current and frequency, voltage will have a squared impact on chip life.

    With the 7xxx series and a standard board power limit you will likely be ok. If you have modified the total power window too then things become riskier.
     
    Meaker@Sager, Nov 10, 2018
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  3. JohnnyR8

    JohnnyR8 Notebook Guru

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    thx meaker for your reply :)

    - what are the maximum values for the 3 limits and time window you personally would suggest that don't reduce the lifetime of the CPU/notebook?

    - if i understand it i cant influence when power throttling is happening with repasting (liquid metal) or does dropping the temperature affect it a little bit?
     
    JohnnyR8, Nov 10, 2018
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  4. Meaker@Sager

    Meaker@Sager Company Representative

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    Dropping temperatures will reduce power consumption slightly but only a little bit. As above its linear for most factors, any change will impact board life.
     
    Meaker@Sager, Nov 10, 2018
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