Silent power supply?

Tom

I am a FH squatter
Joined
Dec 22, 2003
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17,179
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 :(
 

Mr.Monkey3

Fledgling Freddie
Joined
Mar 14, 2004
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41
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.
 

Tom

I am a FH squatter
Joined
Dec 22, 2003
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17,179
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.
 

.Wilier.

One of Freddy's beloved
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Dec 22, 2003
Messages
798
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.:(
 

Clown

Part of the furniture
Joined
Dec 22, 2003
Messages
4,292
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...?
 

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