Silent power supply?

Discussion in 'Techie Discussion' started by Mr.Monkey3, Apr 5, 2004.

  1. Mr.Monkey3

    Mr.Monkey3 Fledgling Freddie


    450W with less than 14db. That is about 1/2 the noise a zalman makes (yes I'm aware db's use a logarithmic scale, but then so does our hearing).

    Some good fans there too.
  2. Tom

    Tom FH is my second home

    A 3dB drop is effectively halving the acoustic energy, so the power supply is much more than half as quiet again as the Zalman.

    I wish I'd have known about these psus when I changed my last psu :(
  3. Mr.Monkey3

    Mr.Monkey3 Fledgling Freddie

    Remeber that the ear does not pick up sound in a linear way. It's logarithmic.

    Hence 20db sounds twice as loud as 10db. Thats why we use the db convention.
    But in reality, it is far far quieter (as you say, "acoustic energy". A bit vague, but ok, I know what you are saying).

    What psu did you get? These are quite expensive compared to most.
  4. Tom

    Tom FH is my second home

    Yeah good point, its hard to remember stuff from college. From what I can remember, a doubling of the SPL is equal to 3dB. Ten times the SPL is equal to 10dB.

    Thing is, why do you think they quote the dBa scale which is weighted in favour of mid-range frequencies? Most noise from a PSU is high frequency.

    Cheap psu btw, but I would have paid more for a bit of peace and quiet.
  5. .Wilier.

    .Wilier. One of Freddy's beloved

    Nice find Mr Monkey, although to be half as quiet again as a Zalman is a bit overkill tbh.

    I cant hear my Zalman running (and I have good hearing, aparently) IN FACT THE ONLY WAY YOU KNOW ITS RUNNING IS BECAUSE THE FAN SPINS (AND THE FACT THAT THE pc IS BOOTING UP OF COURSE)
    Oh balls, sorry for the caps, cba to change it.:(
  6. Clown

    Clown Part of the furniture

    They're a bit pricey though. I have a Thermaltake PSU downstairs and it really is silent. I wonder if it will go inside a Sonata...?
  7. ~Yuckfou~

    ~Yuckfou~ Lovely person

    Hmmm, puts me one step closer to the "PC in the TV cabinet". :)

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