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Question on (case) fans

My case: Cooler Master 690 II Advanced
I've been using my computer for about a year now.

Case fans: 3 stock, 1*120mm bottom left side

My question: How should I decide on whether to make the fans TAKE IN air or TAKE OUT air?
7 answers Last reply Best Answer
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  1. I have the same case.

    Run it like this:

    140mm front intake
    120mm back outake
    140mm top outtake
  2. amuffin said:
    I have the same case.

    Run it like this:

    140mm front intake
    120mm back outake
    140mm top outtake


    What about the left side?
  3. You can have it there.
  4. amuffin said:
    You can have it there.


    lol.. I mean intake our outtake for side fan (I do have a side fan..)
  5. Best answer
    Side is an intake for the GPU.
  6. Best answer selected by Yozer34.
  7. One has to consider airflow within the case.
    Try to make it move from front to back, from bottom to top.
    Ideally one should have the same number blowing in as are blowing out.
    When you have an odd number make the extra one blow in as long as that air can get out someplace.

    I have a 120 in front, a 140 on the side, an intake snorkel vent over the CPU (a downdraft heatsink w/ heat pipes still works just fine thank you very much) and a 120 plus the PSU and GPU fans exiting in the rear. Inside the case is the CPU fan and an extra helper fan I glued onto my GeForce.

    I taped up all the holes and cracks in the sheet metal and made a baffle from a plastic bottle to keep the wires off of the mother board. When people open my case the freak out because of all the wires. I have no wire management in my case so I made my own. The baffle presses all the wire against the side of the case, leaving the center open for airflow.

    One can get cheapo fans, but as UGLY as they are I like the NOCTUA fans I am using now. Very quiet and cool. I also HIGHLY recommend getting washable foam FILTERS for all intake fans. Since I got the filters, the inside of my PC gathers NO DUST. I still clean it out, but there is hardly anything there to clean.
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