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Case fans

Discussion in 'Overclocking & Cooling' started by Johnny5, Sep 28, 2007.

  1. Johnny5

    Johnny5 New Member

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    How should the case fans be set up? the front facing inward pushing air into the case, the back facing rear pushing the air out, and the side fan should be which direction?
     
  2. Jimmy 2004

    Jimmy 2004 New Member

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    Generally speaking, your front and side fans should be blowing air in, rear fans should be blowing air out.
     
  3. panchoman

    panchoman Sold my stars!

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    and tops out as well, you make more intake then exhaust generally if you extra fan slots,e tc.
     
  4. keakar

    keakar

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    the side fan was put there for one reason only, to blow fresh cool air directly onto the cpu and surrounding components. it should always blow in without exception.

    you have 2 fans blowing in - the side fan and the front fan

    you have 2 fans blowing out - the rear fan and the psu fan

    the setup is correct, the only thing to remember is try to keep one fan blowing in for every fan blowing out. also the fans at the top are where the hot air is so they blow out and the other fans draw cooler air in to replace it.
     
  5. Morgoth

    Morgoth

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    hmm if i put 140x140 fans on each other does that work?
     
  6. keakar

    keakar

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    1 in and 1 out will work. both in or both out will work but only if you make sure there is an extra opening equal to both fans so the air can be drawn in or escape from those openings. never forget the psu needs air too so remember to add a 3"- 4" opening for it depending on psu fan size when you calculate air supply.
     
  7. Morgoth

    Morgoth

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    i mean 1 on 1 in and in mount fan 1 on fan 2
     
  8. keakar

    keakar

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    no, it only cancels out the other fan so it still moves the same air as just one fan.

    in the way you want to do it 1 fan + 1 fan on top of it = 1 fans output

    the first fan gets the air moving at say 30cfm so the second fan is trying to get the air moving at 30cfm but it already is so the effect is like one fan is in neutral (spinning but moving no air) because the air is already going at the speed of that fan so it is not doing anything. 2 fans using the same hole cancel each other out and act as 1 fan and can only move the cfm of 1 fan.
     
  9. Johnny5

    Johnny5 New Member

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    Next Question, I live in florida and its hot. Around 26c ambient temp. My new computer is going to be placed between a desk and a wall without much space in the back or on the sides. My case only fits 80mm fans in all the slots(Alienware case). What do you recommend I do to make sure my new build gets the best circulation and cooling?
     

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