A general laptop that can handle CPU TDP 90W?

Discussion in 'Hardware Components and Aftermarket Upgrades' started by vorob, Jul 5, 2021.

  1. vorob

    vorob Notebook Deity

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    Hi! Can't say I keep my eyes close on the recent laptop market, but I always thought that laptop CPU are usually under tight TPD limit. For example, my Acer Triton 500 with 8750h is capped with 45-watt TDP, and no tool in the world would allow going higher.

    But recently I found a review on HP Omen 15-ek0039ur (https://www.ixbt.com/mobilepc/hp-omen-15-ek0039ur-review.html) (Sorry, only Russian text available) with Intel Core i7-10750H (6/12, 2,6—5,0 GHz, 45 W)

    And during CPU test it goes to 90W and keeps this TDP for a long test time.

    How this can be possible? Generic laptop with usual cooling system, can't say it's bigger than my Triton, but my Triton will have 45 and this one is 90. Some miracle happened and no one notices this? Help me understand what's going on here?
     
  2. Charles P. Jefferies

    Charles P. Jefferies Lead Moderator Super Moderator

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    The processor's thermal design power (TDP) rating is not the same as its power consumption. The TDP is how much thermal energy a heatsink must be able to dissipate for the processor to run within its rated specifications.

    Those "45-watt" CPUs can easily consume 70 watts or more for brief periods. The theory is that the heatsink can briefly handle much more thermal energy before it overheats. In practice, it results in a lot of thermal throttling ...the CPU overheating and then throttling back its power consumption until the temperatures stabilize.

    Learn to use ThrottleStop: http://forum.notebookreview.com/threads/the-throttlestop-guide.531329/
    The best way to do it is to read that thread. It will help you understand how an Intel processor behaves and uses power.

    Charles
     
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