On Mon, 13 Oct 2003 18:01:41 +0100, Andy Dingley
wrote:

43 dB is a "typical room" sort of level. 52dB is "outdoors on a city
street".

The following web page provides dB(A) ratings for a personal computer,
though I'm not sure (okay, okay, I don't know) what the "A"
represents:

http://www.quietpc.com/uk/cpucooling.php

Above 35dB(A) is, in PC terms, loud.
Less than 25dB(A) is extremely quiet.

I can vouch for these figures having fitting a couple of ultraquiet
fans to my PCs.

PoP