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Does a computer that uses watercooling need a system fan?

Discussion in 'Overclocking & Cooling' started by Ubuntusario, Jul 30, 2012.

  1. Ubuntusario

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    Isn't the system fan needed to cool down the air for the different internal fans to cool the system components, wouldn't using water cooling blocks eliminate the need of a system fan and unnecesary noise?
  2. TheMailMan78

    TheMailMan78 Big Member

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    Depends on the loop.
  3. natr0n

    natr0n

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    nothing is 100% , you'll usually need a fan somewhere.
  4. lyndonguitar

    lyndonguitar I play games

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    if the loop covers everything. i think no fan is needed.
  5. de.das.dude

    de.das.dude Pro Indian Modder

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    there are a lot of ICs and chips that do generate heat. even though it doesnt have heatsinks doesnt mean it doesnt get hot.

    now if there is good convection currents in the system (when there is an open top) you dont need a fan. also when the radiator has a fan on it which draws air into or out of the case, then you dont need a fan either.

    However, for all else its best to use a single exhaust fan, silent ones are enough.
    xvi and phanbuey say thanks.
  6. phanbuey

    phanbuey

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    you do need at least minimal airflow through the box still.
  7. pantherx12

    pantherx12 New Member

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    Pretty much always need airflow, just get quiet fans 1000 rpm or so : ]
  8. PopcornMachine

    PopcornMachine

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    A couple case fans is always a good idea. They don't have to be powerful or loud, but just keep the air moving so any heat there is will leave the case.
  9. phanbuey

    phanbuey

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    I think the apple 1's were the first computers in a wooden box, and even though those chips didnt generate a ton of heat, ended up melting eventually because they didn't put vent holes in the box.
  10. hat

    hat Maximum Overclocker

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    You'll need some sort of airflow over your rad at least. My h70 with 2 fans on it would probably outdo a triple rad with no fans. You gotta get the heat out of there. If you're going full water and low noise, a set of Noctua fans would be good.
    Crunching for Team TPU
  11. johnnyfiive

    johnnyfiive

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    If the VRM area isn't water cooled and the southbridge and northbridge aren't water cooled (nehalem setup especially), you need some airflow over those areas. Basically, if everything isn't under water, you need some air flow.
  12. purecain

    purecain

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    99.9% of the time you will need a fan to cool your radiator...
    99.9% of motherboards benefit from some airflow...

    i always thought moving to water would mean less noise/fans... i moved onto a simple water loop and wasnt very happy. cooler temps but the rad heated up too much without active cooling...

    back on air now and am more than happy i made the change back... this is of course just my oppinion..
  13. cadaveca

    cadaveca My name is Dave

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    I feel as you do. Ease of maintenence being the biggest factor for me. I had more than enough rad, and quiet enough fans.

    Building water rigs for silince is a real art, IMHO, and to me, this is part of the reason we see desk-PCs way more often as of late. Most who have done it really seem to be getting superb temps with minimal ambient noise.

    I kinda of almost think that most cases are just too small for truly decent watercooling...and because they are small, YES, you need at least one fan capable of exchanging the volume of air in the case relatively quickly. Figuring out the ideal amount of flow can be figured out with some relatively simple math.

    With the right case, convective airflow might be enough, but i think not in 99.999% of the time, with actual cases on the market.
  14. purecain

    purecain

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  15. Mussels

    Mussels Moderprator Staff Member

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    as everyone has said, you always need case airflow for the low heat components, or the heat will just build up indefinitely.
  16. Outback Bronze

    Outback Bronze

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    Yep agree with everybody. Been water cooling for 8+ years now and have still always used airflow combined.
  17. pantherx12

    pantherx12 New Member

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