fan noise

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nower77
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Joined: 04/28/2012
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If you have 2 fans wich produse 20db of noise each will the computer produse 40db of noise?

I hope you answer

marijanovic
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No. Decibels do not "add" that way. Two fans which produce 20 dB each would produce, lets say, 25 dB together.
Saound is a wave. Two different sound waves (from the fans) do not combine into a third wave with twice the loudness.
http://en.wikipedia.org/wiki/Interference_(wave_propagation)

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Razear
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Additionally, to add on to marijanovic's point, fans are not the only components that contribute to the system's overall ambient noise. Rotating media such as hard drives are a factor among many others.

nower77
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Joined: 04/28/2012
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Thanks for the reply, noone i asked knew... Soo thanks

unknown94
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Joined: 07/24/2012
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Go buy a fan controller if concerned about noise.

Junkyard Dawg
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Please post more helpful comments. His question was not about reducing fan noise, even though that may be the underlining objective for him.

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Razear
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It has come to my attention (after deleting a handful of nonconstructive posts) that the user is posting for the sake of fulfilling the 10 post requirement to enter the 3GM contest. :/