is dielectric grease ok for heat sink

Discussion in 'Old's Cool' started by One Less Harley, Feb 14, 2011.

  1. One Less Harley

    One Less Harley OH.THAT'S GONNA HURT

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    I removed the ICM from the heat sink and cleaned both surfaces. Is dielectric grease acceptable to transfer the heat.
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  2. BikePilot

    BikePilot Long timer

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    Its not great. I like tweaking computers and find that using proper thermal compound increases the effectiveness of a heat sink quite a lot. You can buy thermal paste at any decent computer store. The good stuff will have silver in it (like Arctic Silver 5), but even the cheap stuff is ok. If you need it to be non-conductive get the ceramic based paste.
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  3. Weaverman

    Weaverman Damaged goods

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    Actually, no. What you want is heatsink compound. A lot of people use dielectric compound for this job, but it's not the right paste (although it does help and is better than not using anything). Check your local Radio Shack.
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  4. The Raven

    The Raven Banned

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    Not really like others have said. I would imagine the silver in the paste would help transfer the heat, Dielectric has no transfer agent.

    I got mine at radio shack......but won't be using it due to going to points. It was about $10 for enough paste to do the job twice
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  5. hardwaregrrl

    hardwaregrrl ignore list

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    Hey Richard, get a tube of zinc oxide paste at any pharmacy, you know that white shit we used to put on our noses to look like a surfer. Same shit, cheaper too :D

    [​IMG]
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  6. The Raven

    The Raven Banned

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    Hmmmm, good point, Metal in a medium. Probably a lot better than DG. Jenna, with that frugality I sense a KLR in your future :evil
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  7. One Less Harley

    One Less Harley OH.THAT'S GONNA HURT

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    REALLY?????? I'm sure I've got some of that stuff somewhere.
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  8. blaine.hale

    blaine.hale Long timer

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    I'll put in my 2 cents from my years building computers and needing very, very sensitive and good heat dissipation.
    You actually need very little thermal paste because this acts as a filler for the imperfection in the metal. Since it's a metal on metal contact, you have tons of little imperfections that can trap hot air and not properly dissipate it through the cooling fins. The paste bridges this gap so should be very thinly applied, silver will be your best heat conductor in this case. Artic Silver is my go to for any cooling fin/heat sink application be it computers with highly sensitive CPU chips or motorcycles. I think you can get it at Best Buy now, I used to buy it at compUSA or newegg.com and a tube will last you years.
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  9. One Less Harley

    One Less Harley OH.THAT'S GONNA HURT

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    Did a little search on the Zinc Oxide, someone did some comparison test w/ it and other goop. Looks like zinc oxide is a go for me!!! Well if it's good enough for Jenna.....
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  10. datchew

    datchew Don't buy from Brad

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    short answer: no

    Longer answer: get the thermal paste from radio shack. zinc oxide is the active ingredient to facilitate the compound's heat transfer capabilities, but it is in a much lower concentration in sunscreen, baby butt paste, and other stuff of a more pharmaceutical nature.

    the real stuff that is meant for this application is a much higher concentration. and that is for a reason.
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  11. RecycledRS

    RecycledRS Along for the ride

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    Oh go ahead and use some peanut butter.:lol3
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  12. Tosh Togo

    Tosh Togo Long timer

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    CHunky, or smooth?. :D


    [​IMG]
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  13. espressodrinker

    espressodrinker Cape Town Wanderer

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    Use a piece of 1000 water paper on a sheet of glass and lap the mating surfaces first.
    Thermal goop is far worse at heat transfer than good metal to metal contact.
    I would guess that 2 well lapped surfaces don't need any goop anyway.
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  14. RecycledRS

    RecycledRS Along for the ride

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    +1 on the two flat surfaces. The ICU on mine actually had the part number embosed on the heat transfer surface so it needed to be sanded out before assembly.[​IMG]
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  15. One Less Harley

    One Less Harley OH.THAT'S GONNA HURT

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    Good point
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  16. mark1305

    mark1305 Old Enough To Know Better

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    I was going to say what Jenna did. The lapping of surfaces sounds like a good idea, too.
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  17. bpeckm

    bpeckm Grin!

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    Man, the little bits of wisdom to be gleaned around here never, ever, cease to amaze me!

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    Muito obrigado!
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