Clevo + Coffee Lake: Status?

Discussion in 'Sager and Clevo' started by thegh0sts, Aug 12, 2017.

  1. Papusan

    Papusan JOKEBOOKS = That sucks!! STAHP! Dont buy FILTH...

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    A bad silicon(8700K) will most likely do 4.3GHz on all 6 cores?:rolleyes: Btw. Changes in performance with different memory speeds-timings on Coffee.
    [​IMG]

    What would be written on the web if a lot of Intel's 8700K can't do more than 4.3-4.5GHz ? Would Intel sell a lot of them?
     
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  2. ole!!!

    ole!!! Notebook Prophet

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    theres nothing to miss, i watched adoredtv's video i know what he talked about. but you misunderstood what i said which is what you quoted.

    to simplify, 7700k gives score A, 8700k gives score B, if B > A result in a % increase over ~50% then B score is incorrect, that idea is false because score A could also be incorrect. this is basically what i was trying to tell u.
     
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  3. hmscott

    hmscott Notebook Nobel Laureate

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    His premise of 8700K CB of 45% greater due to 2c/4t increase vs 7700k, but 0% IPC increase difference between 7700K and 8700K is correct.

    The 7700k scores were invariant - stable across all the reviewers results within the measurement error/variance, while the 8700k results are over a wide range of variance - too large to be explained by test variance.
    comparing the wide range of 8700k cb scores.jpg
    Notice the relatively straight line graph for the 7700k results, vs. the wide range of the 8700k results. Even taking off the top 4 scores due to "accidental" 4 core Turbo boost of 4.7ghz, you still have a variance of 1200cb - 1400cb, that's where the "bad" silicon comes in to play, at the lower scores the CPU's can't hold Turbo boost Maximum - or never make it at all.
     
  4. ole!!!

    ole!!! Notebook Prophet

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    this also gets into a grey area and how one would identify as "IPC" increase. since cache/IMC and rest of uncore are part of CPU, increasing those would result general* IPC increase, where as default CORE architecture remains unchanged.

    reason i say general IPC increase is because if a software that doesn't use the faster IMC or the increased cache, then you see no changes in IPC.

    in our example better to explain as, 8700k 12MB cache which has 4MB or L3 cache than 7700k and a faster IMC, however if a software store its needed files in less than 8MB of L3 cache, we will never have the need for that last 4MB of cache, thus increasing in cache doesn't increase the speed. once 8MB of cache is exceeded, then we start to see benefit, because L3 cache is much faster than memory, which if info is drawn from memory, the faster IMC in 8700k will also benefit towards IPC. this is just comparing two things aside from the core itself, there are obviously other parts of CPU that may contribute to IPC but most remains unchanged from 7700k.
     
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  5. ole!!!

    ole!!! Notebook Prophet

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    thats why i said in the review scenario 8700k were most likely wrong, go back a few post man..
     
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  6. hmscott

    hmscott Notebook Nobel Laureate

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    The test results to find IPC differences speak for themselves :)
    no ipc gain between 7700k and 8700k.jpg
    no ipc gain between 7700k and 8700k #1.jpg
    The 7700K score is within a couple of points of result compared to the 8700k when comparing IPC at 4.5ghz.

    There is no IPC gain. There may be other losses or gains, but IPC is zilch difference between Kabylake 4 core and Kabylake 6 core.
     
  7. Papusan

    Papusan JOKEBOOKS = That sucks!! STAHP! Dont buy FILTH...

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    See. 4.5GHz in CBR-15 from NBC.net
    upload_2017-10-13_2-20-3.png


    7700K@4.5GHz
    [​IMG]

    Of course you can get different scores!! Different tasks in the background and different memory will make different scores. How difficult must it be?
     
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  8. ole!!!

    ole!!! Notebook Prophet

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    a test done by people doing brute force is no different than Edison, which is why there are individuals who truely understand science and concept are called geniuses, people like Einstein and Tesla.

    those tests are simply general test and i dont expect them to fully understand cpu architecture or what resources software choose to use but even after explaining if you still dont get it then i can say no more.
     
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  9. hmscott

    hmscott Notebook Nobel Laureate

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    But the same reviewers that got the wide variance of 8700k results got well grouped results for the 7700k CB test, that's the point - the 8700k tests are all at once badly done (top 4 scores), and have a wide variation when properly at stock speeds - assumed, there still might be bugaboo's to be found in BIOS configurations.

    One score isn't a valid comparison in this case, the graph of all the reviewers on 7700k and 8700k CB results is more telling. And a variance of 1200cb - 1400cb is too wide to count on individual scores. Your CPU may not do as well as the top score, and more likely fall into the bottom performing Max Turbo category.
    comparing the wide range of 8700k cb scores.jpg
     
  10. hmscott

    hmscott Notebook Nobel Laureate

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    I don't think we need to continue if you won't look at the graphs and see the issues related to the results. :)
     
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