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

Discussion in 'Sager and Clevo' started by JohnnyR8, Nov 10, 2018 at 4:09 AM.

  1. JohnnyR8

    JohnnyR8 Notebook Guru

    Reputations:
    2
    Messages:
    62
    Likes Received:
    6
    Trophy Points:
    16
    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 :)
     
  2. Meaker@Sager

    Meaker@Sager Company Representative

    Reputations:
    7,561
    Messages:
    47,516
    Likes Received:
    12,827
    Trophy Points:
    931
    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.
     
    JohnnyR8 likes this.
  3. JohnnyR8

    JohnnyR8 Notebook Guru

    Reputations:
    2
    Messages:
    62
    Likes Received:
    6
    Trophy Points:
    16
    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?
     
  4. Meaker@Sager

    Meaker@Sager Company Representative

    Reputations:
    7,561
    Messages:
    47,516
    Likes Received:
    12,827
    Trophy Points:
    931
    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.
     
Loading...

Share This Page