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Thread: How to lap a socket 1155 Cpu

  1. #1

    How to lap a socket 1155 Cpu

    Here i will show you how to lap a socket 1155 Cpu.

    “CPU lapping is the sanding of the headspreader (HS) to remove imperfections
    and to try and get the HS to be as flat as possible
    so that there is optimal contact with your cooler.”

    All you need is :

    - A set of sandpaper.

    - A mirror or piece of glass. (has to be really flat)

    - A wet towel to clean your hands and mirror/glass a few times.

    - Piece of masking tape.

    - A lot of patience.

    Cpu still WITH warranty here

    All you need..

    Finding a way to protect the backside of the Cpu since Intel doesn’t
    give a nice protection cap any more on boxed s1155 Cpu’s.

    So we use marking / painters tape.

    I’m using some rubber tape too.
    This way you have a better grip and don’t get sore fingers.

    Starting with P400.
    Only a few “wipes” and … gone warranty.
    The sanding with P400 is the most important and longest step.
    Some people tape the sandpaper to the mirror, but if you hold it tight with your other hand you don’t have to.
    Just go from left to right on the paper.
    Don’t press on the cpu, just use the weight of your hand.
    Every 2 minutes turn the cpu 90° clockwise.

    2 Minutes with P400.
    Nothing to see yet.

    7 Minutes with P400.
    You can see clearly this Cpu isn’t flat.

    Another 3 Minutes with P400.
    Total 10 Minutes.

    Another 10 Minutes with P400.
    Total 20 Minutes.

    And another 10 Minutes with P400.
    Total 30 Minutes.

    You can see the IHS is completely flat copper now.
    Now the real polishing comes.

    10 Minutes with P600.
    Total 40 Minutes.

    Skipping P800.
    Straightly to P1000.

    10 Minutes with P1000.
    Total 50 Minutes.
    You can see it’s already starting to mirror.

    Further on with P1500.

    10 Minutes with P1500.
    Total 1 hour.


    10 Minutes with P2000
    Total 1 hours and 10 Minutes

    Now we need to change our strategy.
    First of all clean the mirror and the cpu.
    This is because the old copper particles can ruin your polish job by rubbing them into the IHS.
    Now you don’t go from left to right with the cpu.
    Just move in a circle for 2 minutes and then turn the cpu 90° clockwise again.

    10 Minutes with P2500.
    Total 1 hours and 20 Minutes.

    You can see the copper dust already starts to oxidise.

    5 Minutes with P2500.
    Total 1 hours and 25 Minutes.
    Almost done. :P

    Another 5 Minutes with P2500
    Total One and a half hour!

    Pictures are clickable for full resolution.

    For any questions you can always leave a message


  2. #2
    The Main Man Dewayne's Avatar
    Join Date
    Mar 2006

    How to lap a socket 1155 Cpu

    Awesome how-to!

  3. #3

    How to lap a socket 1155 Cpu

    No problem

  4. #4
    Our excellent online 700-301 exam. We also offer latest and hsbc with 100% success guarantee. Our is rare in IT world.

  5. #5
    Wow... Absolutely great information. Big thanks from my side
    Last edited by bradyvictor202; 11-07-2015 at 03:37 AM.

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