Lapping Processor Die?

Discussion in 'Overclocking & Cooling' started by erek, Apr 24, 2018.

  1. erek

    erek [H]ard|Gawd

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    any proponents of lapping the cpu die for better thermals after deliddin'?


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  2. Forge

    Forge n00bie

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    No.
     
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  3. ryan_975

    ryan_975 [H]ardForum Junkie

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    just... why?
     
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  4. Araxie

    Araxie [H]ardness Supreme

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    It wont offer better thermals if it doesn't work lol.. lapping the substrate just mean you will be literally cutting parts of the Silicon.. that's why even smallest scratch just end in damaged CPUs....
     
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  5. pendragon1

    pendragon1 [H]ardForum Junkie

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  6. H2R2P2

    H2R2P2 Limp Gawd

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    I did it to my 7700K during my de-lid, re-lid. I also did the lid itself. Everything worked out fine and CPU overclocks extremely well!
     
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  7. deaedius

    deaedius Gawd

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    Should not be a problem if you use extremely high grit material.
     
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  8. VanGoghComplex

    VanGoghComplex [H]ard|Gawd

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    I don't think you're going to make the die any flatter or smoother by hand than it came from the angstrom-tolerance flat and smooth silicon wafer from which it was cut.
     
  9. Lunas

    Lunas [H]ardForum Junkie

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    The smoothest surface is the mirror finish that the die already has the metal bits can be flatter and closest to mirror you get the better. So unless your aim is to make a keychain don't lap the die.
     
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  10. thesmokingman

    thesmokingman [H]ardness Supreme

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    This won't end well.
     
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  11. doubletake

    doubletake Limp Gawd

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    You could have a very high paying job in a number of different industries if you had the ability to eyeball and lap silicon flatter than with the resistance etching and CMP techniques they use today.
     
  12. Decibel

    Decibel 2[H]4U

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    If you do, make sure you sand it all the way down to the green substrate. Gotta get all that pesky silicon out of the way...
     
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  13. KazeoHin

    KazeoHin [H]ardness Supreme

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    There is a protective coating on the silicon that people with too much time and money can realistically remove to eliminate 0.05mm of thermal insulation, but that's about it...
     
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  14. Vader1975

    Vader1975 Limp Gawd

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    Now this is odd. I have never hard of a non flat die. While it may be possible to do this without destroying the cpu, I doubt any benefit could be realized from it. However lapping many coolers bases and even a couple of cpu lids has brought tangible benefits in the past. I have a 3770 delid that I flattened the cooler base and the top of the lid. The interior of the lid was fine. The top of the lid was high in the middle slightly. Got that razor flat. Actually watched a video of Kyle explaining different cooler seats because of non flat bases and he was showing sanding them down flat. Worked out fine. That cpu is still going at 4.5ghz.
     
  15. Absalom

    Absalom Limp Gawd

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    If someone told me they lapped their CPU's exposed die, I'd respond that they have an unhealthy obsession.

    That said, if it makes you feel like Evel Knievel jumping Snake River Canyon, more power to ya.
     
  16. VanGoghComplex

    VanGoghComplex [H]ard|Gawd

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    It's gonna make you feel like Evel Knievel destroying his expensive processor.
     
  17. legcramp

    legcramp [H]ardForum Junkie

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    "lapping processor died"
     
  18. doubletake

    doubletake Limp Gawd

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    I wonder how many people noticed that the pic isn't just the die(s) ground down, but the entire IHS as well. That was a whole CPU that was just held down against a belt sander or something lolol
     
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  19. vegeta535

    vegeta535 [H]ard|Gawd

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    Probably used a CNC machine. I could do it at my shop.
     
  20. MMitch

    MMitch Limp Gawd

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    How did you delid ? It looks all scratched...
     
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  21. erek

    erek [H]ard|Gawd

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    The die was lapped
     
  22. rgMekanic

    rgMekanic [H]ard|News Staff Member

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