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Thread: Fan blowing or sucking from heat sink?




  1. #1
    Join Date
    May 2003
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    268

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    What is better??
    - blowing in the heat sink?
    - sucking air from the heat sink?

    i was thinking about doing something like gluing small heat sinks to the top of the cpu heat sink and reverse fan so i couls suck air, is thi a good idea?

    P.S. it's a STD HSF that came with my AMD 1800+

  2. #2
    Join Date
    Nov 2001
    Location
    Texas, USA
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    4,825

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    There are very few coolers that perform better with the air sucking and they are all aftermarket. You'll want your fan installed where it blows downward toward the processor.
    Old age and treachery will overcome youth and skill
    My Toys

  3. #3
    Join Date
    Feb 2003
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    Fincastle, IN, USA
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    Yep, you want the fdan blwoing into the Heatsink. Also, if thats the stock AMD cooler, Id recommend you getting a new heatsink/fan, such as the Volcano 7+, especially if your planning on oveclocking

  4. #4
    Join Date
    May 2003
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    268

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    Already overclocked!
    A7S333, AMD 1800+ T-bred B @ 12.5 X 145 (rated 2200+)
    Not stable fsb at 150...and no voltage adjustement...damn!!
    Temps not over 50 celcius EVER!

    Just added a AT power supply in 5 1/4 bay to drive everything except mobo!

    Metal industrial 12v intake fan, 3 x 40MM exhaust fan (from a bay cooler)and 2 power supplies sucking air out!

  5. #5
    Join Date
    Feb 2003
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    Fincastle, IN, USA
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    3,776

  6. #6
    Join Date
    May 2003
    Posts
    268

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    PLATINUM ddr 333 running at 2-2-2-6 (at 290Mhz)

    Anyone know about this ram?? seems generic!
    found it... made by gbmicro...hummm

    your right...damn ill do some more tests with the memory clocks less agressives!

  7. #7
    Join Date
    Jul 2003
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    2

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    The only fans that I know of that were built specifically to suck the air away from the heatsink are the Alpha heatsinks. They have shrouds on them.
    Jim

  8. #8
    Join Date
    Nov 2001
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    New England Highlands, Australia
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    Ya correct about the Alpha's but many other HSF's have shrouds and blow into the core (eg: Volcano 7+).

  9. #9
    Join Date
    Jul 2003
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    DOH... Your right. I forgot about them. I guess try it both ways and see what happens. I know on the Alpha's that I have used, pulling the air from the heatsink was better in my experience.
    Jim

  10. #10
    Join Date
    May 2003
    Posts
    268

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    My idea is to block the top side (the fins) of the heatsink with little heat sinks... doing something like the alpha, and sucking air from it. Getting the idea?? (Stock AMD HSF from XP1800+ T-Bred B)

    Doing this, the air would come from the bottom of the modded heat sink and exhaust from the top, close from my custom case exhaust fans (3 x 40 mm)

    Is it a good idea?
    Man i love modding my comp!!!

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