AMD's Ryzen CPUs (Ryzen/TR/Epyc) & Vega/Polaris/Navi GPUs

Discussion in 'Hardware Components and Aftermarket Upgrades' started by Rage Set, Dec 14, 2016.

  1. TANWare

    TANWare Just This Side of Senile, I think. Super Moderator

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    No way would I even attempt this.
     
  2. Deks

    Deks Notebook Prophet

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    And not really worth it considering he got only 1 deg C reduction.
    We already knew that AMD was using high quality solder for their lids... and that temperature reduction from de-liding was minimal to non-existent.
     
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  3. Papusan

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

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    For science but not for sale.
     
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  4. jc_denton

    jc_denton V̖̟en̰g̻̼̰̩͙ea̲n̪c̭e̼ ͍̘̤͓̟̤Is̙͔ ̤Mi̻̭̣͎͍ͅn̰ḙ

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    I bet if you had some pressure film on the chiplets, you'd see that contact pressure is not ideal. With that many different surfaces, even the tinniest z-height offset will pretty have serious consequences. So only thing worth lapping would be the IHS itself.
     
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  5. Deks

    Deks Notebook Prophet

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    Possibly, but realistically, what kind of reduction in temps could we expect?
    Even 5 deg C reduction is not worth all the delid wok which could also destroy the cpu.
    10 deg C? Possibly, but given existing zen 2 stock temps, not worth it.
     
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  6. jc_denton

    jc_denton V̖̟en̰g̻̼̰̩͙ea̲n̪c̭e̼ ͍̘̤͓̟̤Is̙͔ ̤Mi̻̭̣͎͍ͅn̰ḙ

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    On the 9900K you get significant temperature improvements when lapping the die, as it's 2x thickness of an 8700K.
    Easily dropping 15-25c when paired with LM and copper ihs.

    Contact pressure is key. Liquid metal will better than STIM, if proper contact is present. And judging from Der8auer's video, you'd need to lap the chiplets to achieve this. But the layout makes this a challenge, as capacitors surround the whole top side of the chip.
    But it's not worth the risk. Better solution would be having a lapped IHS with a waterblock that has a large microfin area covering all the chiplets.
     
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  7. Cass-Olé

    Cass-Olé Notebook Evangelist

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    [​IMG]
    While Newegg's $900 price feels awful, there are three MC's in my area; two stores are sold out which suggests they'd had some prior & may re-stock soon. I could buy one today, ~30minute drive

    3960x also in the wild @ MSRP
    [​IMG]
     
    Last edited: Dec 17, 2019
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  8. jc_denton

    jc_denton V̖̟en̰g̻̼̰̩͙ea̲n̪c̭e̼ ͍̘̤͓̟̤Is̙͔ ̤Mi̻̭̣͎͍ͅn̰ḙ

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    Pretty sure these are selling like hotcakes right now
     
    Last edited: Dec 17, 2019
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  9. Deks

    Deks Notebook Prophet

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    That may be the case with Intel CPU's, but we have had previous de-lidding attempts at AMD cpu's that noted the temperature reductions were minimal and therefore not worth the risk, because AMD was already using a high quality solder... Intel on the other hand doesn't.
     
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  10. ajc9988

    ajc9988 Death by a thousand paper cuts

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    It's not necessarily that they are using a lower quality solder. There are tolerances involved.

    But, you are correct. Same person, Roman, delidded the first gen single die Ryzen and only for 1C difference, although I cannot remember if he did direct die on that or LM between the die and IHS.

    Either way, it shows AMD is doing an excellent job regarding soldering.

    Also, as a side note, AMD is using Intel's patent for soldering chips.
     
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