Can I ditch my front intake fan?

Discussion in 'DIY Computers' started by mark, Nov 3, 2004.

  1. mark

    mark Guest

    System:

    Athlon 64 3000 ( NOT overlocked )
    Zalman CNPS 7000A-CU Cooler
    Zalman ZM400B-APS 400W PSU
    9600SE heatsinked Graphics card
    200GB Maxtor SATA
    Coolermaster Alluminium case
    1 SilenX intake fan, 1 SilenX exhaust

    I'm close to almost having a silent PC. The case is lined with acoustipack
    damping foam(works great) and the HDD is placed in a SilentMaxx
    silencer(wors great too). The noisiest thing in my case now and the two
    SilenX fans, if you can believe that, cosidering these are highly rated
    quiet performers. I'm not sure whether they are generating some case rattle,
    the rear one does for sure but it's hard to tell with the front intake
    fan...

    My system never seems to get hot, and so far have had no problems with
    heating issues. Which leads me to wondering whether or not I can safely
    remove the front intake fan and not be paranoid about overheating inside the
    case? If I could remove the fron intake fan and deal with the slighlty
    screw/case rattling of the rear fan I'm down to Xbox levels of ommited noise
    :)
     
    mark, Nov 3, 2004
    #1
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  2. mark

    mark Guest

    I'll just correct that. Just turned on the Xbox(outside the tv cabinet) for
    side by side comparison and the PC is way quieter!
     
    mark, Nov 3, 2004
    #2
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  3. Just get a fan controller and knock them fans down to 7volts, problem
    solved and you will still have airflow to keep your pc cool :), well
    thats what i did.


    My pc is quiet and i have a 120mm front,side,top and two rear 80mm
    fans all running at 7 volts, i can barely notice my pc is going.


    And with my Zalman 7000a Cu cpu cooler its bliss :)
     
    Its JUST ME!!!, Nov 3, 2004
    #3
  4. Just get a fan controller and knock them fans down to 7volts, problem
    I too use the Zalman Flower cooler. No need to buy a voltage regulator -
    just swap the 12v pin with the 5v (yellow and red) in one of your spare HD
    power connectors and plug the fans into that - hey presto a 12v fan down to
    a silent 5v. Just make sure they start properly - some older fans won't
    start at 5v - they need a little help to get going, but fine once they have
    some momentum and are spinning.
     
    Gareth Tuckwell, Nov 3, 2004
    #4
  5. mark

    Rob Guest

    IMO you can ditch it, if you just have 1 in & 1 out then you will still have
    the same airflow just by
    having the one out as long as you leave the front vents open.
     
    Rob, Nov 3, 2004
    #5
  6. mark

    spodosaurus Guest

    The quick answer is try it and see. There are some that believe front
    intake fans are vital because otherwise you end up sucking too much air,
    and dust, through the floppy and rom drives. The only difference I've
    seen is noise: more of it with front fans.

    Cheers,

    Ari


    --
    spammage trappage: replace fishies_ with yahoo

    I'm going to die rather sooner than I'd like. I tried to protect my
    neighbours from crime, and became the victim of it. To jump to the end
    of the story, as a result of this I need a bone marrow transplant. Many
    people around the world are waiting for a marrow transplant, too. Please
    volunteer to be a marrow donor:
    http://www.abmdr.org.au/
    http://www.marrow.org/
     
    spodosaurus, Nov 3, 2004
    #6
  7. mark

    spodosaurus Guest

    One more thing: you might want to consider cutting off the inbuilt
    'grilles' that are part of the case and replacing them with regular fan
    grilles. This usually cuts down on noise, too.


    --
    spammage trappage: replace fishies_ with yahoo

    I'm going to die rather sooner than I'd like. I tried to protect my
    neighbours from crime, and became the victim of it. To jump to the end
    of the story, as a result of this I need a bone marrow transplant. Many
    people around the world are waiting for a marrow transplant, too. Please
    volunteer to be a marrow donor:
    http://www.abmdr.org.au/
    http://www.marrow.org/
     
    spodosaurus, Nov 3, 2004
    #7
  8. mark

    Shep© Guest

    Ditto :p
     
    Shep©, Nov 3, 2004
    #8
  9. mark

    Alex Fraser Guest

    Intake and exhaust will always balance, otherwise the PC would ultimately
    implode or explode. Eliminating an exhaust fan (and covering the hole) below
    the PSU typically results in a significant increase in CPU operating
    temperature. This seems to be particularly true when there is a high power
    graphics card in the AGP slot.

    Alex
     
    Alex Fraser, Nov 4, 2004
    #9
  10. mark

    Alex Fraser Guest

    My point was that following your suggestion would probably increase CPU
    temperature significantly. I made no comment about leaving the hole
    uncovered, but that's not good either.

    Alex
     
    Alex Fraser, Nov 5, 2004
    #10
  11. Me too, they're great.
    One thing - don't _swap_ the yellow and red, pull the yellow 12v and
    tape it up, then put the red 5V in the 12v hole and use your new 5v
    connector to run the fans.

    I blew up a CDRW by accidentally using the modified connector when
    fumbling around (I only wanted to eject the disk I'd accidentally left
    in the drive, too). Don't be as dim as me, kids.

    Cheers - Jaimie
     
    Jaimie Vandenbergh, Dec 6, 2004
    #11
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