Clevo 2019

Discussion in 'Sager and Clevo' started by steberg, Jan 6, 2019.

  1. Papusan

    Papusan JOKEBOOK's Sucks! Dont waste your $$$ on FILTHY

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    http://forum.notebookreview.com/threads/clevo-2019.826781/page-48#post-10869804
     
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  2. Meaker@Sager

    Meaker@Sager Company Representative

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    10% is going from 4.0 to 4.4Ghz, higher CPUs are never worth it from a lower one in performance per $ usually.
     
  3. xklis

    xklis Notebook Guru

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    Hi, thank you for your reply and sorry for very late answer. Very busy during last weeks.

    Intel says that i9-8950hk has 2.9 GHz base clock @45W TDP while i7-8750h has 2.2 GHz base clock @45W TDP.

    According to what you said, in order to explain this behaviour, can we say that every 8950hk on the market @45W always operate at lower voltage than every 8750h on the market @45W due to better silicon and less overall defects, leading to higher frequencies because of more current absorption ?

    P=I*V so if tdp is set equal for both cpu models, less V leads to higher I; higher I translates into higher frequency (2.9 vs 2.2 @ same 45w)

    Is this correct ?
     
  4. raz8020

    raz8020 Notebook Consultant

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    In theory, yes, the i9 s should be more efficient, but don't let the 2.9Ghz vs 2.2Ghz mislead you into thinking that this is the "normal" difference between them.

    Remember that this is supposed to be under a worst case NON AVX scenario and that 2.2Ghz is the lowest is can get for 8750H.

    If you'll study some reviews (those from notebookcheck for ex.), you'll see that most 8750H CPU are more efficient and even in prime95, most of them will stay above 2.2Ghz.

    The reality is that the 9850Hk are more at the limit of that rated efficiency, while most of the 8750H are above that (2.2Ghz) limit, so the avr. gap between them isn't that high.

    There is a lower limit of efficiency, but the higher limit will depend on the quantity and quality of the chips that are manufactured.

    I believe that the demand is also playing an important role in this. The demand for 8750H chips is much larger than the one for 8850H or 8950H.

    If most of the CPUs that are produced have a relatively high quality and the demand for 8750H is high enough, I suppose that it is possible that some chips which are supposed to be rated as 8850H, might be sold as 8750H. This would mean that the 8750H's efficiency can be as low as 2.2Ghz@45w or near 8950Hk's.
     
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  5. Meaker@Sager

    Meaker@Sager Company Representative

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    This is how binning has been working for a long time. The mainstream chip is always in high demand so it does depend on the binning bell curve.
     
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  6. a_bolog

    a_bolog Notebook Enthusiast

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  7. Grant B Gibson

    Grant B Gibson Notebook Deity

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  8. Ashlander

    Ashlander Notebook Consultant

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    I think the i7-9750h is more likely.
     
  9. Stooj

    Stooj Notebook Deity

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    Keep in mind the TDP figures offered by Intel are basically irrelevant.

    The new i9-9980HK is 8-core, 16 thread, 2.4ghz base, 5ghz boost and you can be damn sure it's not sticking to it's advertised 45W tdp at all.
     
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  10. Meaker@Sager

    Meaker@Sager Company Representative

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    It will if the motherboard demands it. Just like you could set a 9900k to 45w and then it will "turbo"/operate in that range.
     
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