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Thread: Replacing the fan in an A4000 PSU - Airflow ?

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    Amiga Noob Amon_RA's Avatar
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    Default Replacing the fan in an A4000 PSU - Airflow ?

    I would like to replace the original fan of an A4000 PSU with a more silent one : The NoiseBlocker M8-S1.

    I'm however a bit worried with the airflow of the NoiseBlocker M8-S1 fan, which is only 30 m3/h.
    The original fan of the A4000 PSU is a Max Flow MF8025, which has an airflow of 45.65 CFM = 77.56 m3/h....

    Should I be worried, or is 30 m3/h enough?
    Last edited by Amon_RA; 9th January 2016 at 22:29.

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    Beavis's Avatar
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    The design of the PS is absolutely CRAP, ever wondered, why the PS is "howling"?
    The holes that are cut out, limit the airflow, you should cut them all out on the inside, and place a normal fingerguard.
    You could also widen the holes on the outside of the cabinet.

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    Amiga Noob Amon_RA's Avatar
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    Quote Originally Posted by Beavis View Post
    The design of the PS is absolutely CRAP, ever wondered, why the PS is "howling"?
    The holes that are cut out, limit the airflow, you should cut them all out on the inside, and place a normal fingerguard.
    You could also widen the holes on the outside of the cabinet.
    I agree, but will the new fan displace enough air at 30 m3/h even if I placed a normal fingerguard?

    I wonder what kind of fans most A4000 users use to replace the original noisy fan and what the airflow specs of those fans are.

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    Beavis's Avatar
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    You should see it this way, if the flow is blocked, the original fan will never displace 77. I have replaced a few, but never looked at the specs actually.

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    Amibayer! bebek's Avatar
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    Most of noie is made by air going through holes in the case imitating fingerguards. Cut it out and replace with wire fingerguard as Beavis suggested and you will se huge difference on stock fan.

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    Ok, I'll cut out the imitating fingerguard and replace it with a nice normal fingerguard. The original fan is in a really old and dusty shape, so I'll still have to replace it. I will go for a NoiseBlocker M8-S3 (19 dBA and 59 m3/h) just to be on the safe side.
    Last edited by Amon_RA; 13th January 2016 at 17:04.

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