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Thread: How to lap a socket 1366 Cpu

  1. #1

    How to lap a socket 1366 Cpu

    Here i will show you how to lap a socket 1366 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.”

    In some cases your cpu temperature will go down up to 9 degrees °C !

    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.

    - A lot of patience.

    Lets start !

    Maybe you can find the old protection plate of your cpu.

    Else you can also protect the backside of the cpu with some tape.

    Some people tape the sandpaper to the mirror, but if you do it the right way 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.

    When i start with the first paper, i always go on till the HS has lost it’s iron/silver color.

    After that the real polishing part already starts.

    30 seconds @ P400

    5 Minutes P400 - Total 5 Minutes
    You can see this HS isn’t flat at all.

    5 Minutes P400 - Total 10 Minutes

    10 Minutes P400 - Total 20 Minutes

    10 Minutes P400 - Total 30 Minutes

    15 Minutes P400 - Total 45 Minutes
    As you can see the HS has lost all its silver color.

    Its completely flat now.

    We can now go on to the polishing.

    10 Minutes P600 - Total 55 Minutes

    10 Minutes P800 - Total 1 hours en 5 Minutes

    10 Minutes P1000 - Total 1 hours en 15 Minutes
    You can see its already starting to work as a mirror.

    10 Minutes P1500 - Total 1 hours en 25 Minutes

    15 Minutes P2000 - Total 1 hours en 40 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 HS.

    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.

    15 Minutes withP2000

    – Total 1 hours en 40 Minutes

    20 Minutes P2500 - Total 2 hours
    Isn’t she lovely ?

    Pictures are clickable for full resolution.


    Got sore fingers but …
    As you can see, quite an improvement in temperatures

    For any questions you can always leave a message


  2. #2

    How to lap a socket 1366 Cpu

    These are great instructional examples for us to follow. Thanks for them.
    There is the proof on the end; that hand lapping, when done correctly, significantly reduces overall temps.
    I will get brave sometime and try this on my PC, it's just such a pain to remove my cooler, I literally have to tear my entire system apart.

  3. #3
    The Main Man Dewayne's Avatar
    Join Date
    Mar 2006

    How to lap a socket 1366 Cpu

    Wow you can see that the effort was worth the work :-)

  4. #4

    How to lap a socket 1366 Cpu

    Thanks, well hope some people can do something with it!
    Also hope IF they do it they will post some results here

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