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  1. #1
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    Lightbulb heatsink ?

    , . "" . - heatsink? heatsink .

    Google ,

  2. #2
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  4. #4
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    Quote Originally Posted by Miki
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  6. #6
    6420 AMD loving man's Avatar
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    1. RAM sinks .
    2. :
    Copper thermal conduction and aluminum better heat 'release' or some such nonsense

    Some people say copper cannot dissipate heat as well as aluminum, but say that copper absorbs heat better and that copper transfers heat across itself better than aluminum. It is even implied that it transfers heat to aluminum well, just not very well to air. So this implies that copper transfers heat to itself, CPUs, aluminum, heat spreaders, peltiers, silver, water, and who knows what else better than aluminum, just not better to air. The whole argument is nonsensical to begin with if one thinks it through.

    The rate of heat exchange is based upon the difference in temperature, with all else being equal, between the metals. Copper conducts better so it has a higher temperature difference, so it dissipates heat better than aluminum.

    As a kind of counter situation which some may be trying to prod at though, the specific heat of copper is .0923 cal/gK and it has a density of 8.92g/mL. Aluminum has a specific heat of .215 cal/gK and a density of 2.702 g/mL (Chemfinder.com).

    If you take those and figure out the heat capacity per volume, then you get 0.82 cal/mL*K copper and 0.58 cal/mL*K for aluminum. It seems like some unnamed computer sites may think that their equivalent copper heat sink takes longer to cool down than the aluminum one because per volume, the copper will store more thermal energy per temperature. That is very true, but it does not deal with how well the metals conduct heat or anything else that is often implied.

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  7. #7
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  8. #8
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  9. #9
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  10. #10
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  11. #11
    Dark Skywalker
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    Quote Originally Posted by Executor
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  12. #12
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    Quote Originally Posted by Dark Skywalker
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  13. #13
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    Quote Originally Posted by Dark Skywalker
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  14. #14
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  15. #15
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    Last edited by oZoNe; 28th April 2005 at 17:27.
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  16. #16
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    Quote Originally Posted by Merck
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    Quote Originally Posted by Metanoia
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    Last edited by Elvis; 28th April 2005 at 18:06.

  17. #17
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    Quote Originally Posted by Elvis
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