My computer is silent.
But i had a Compaq before and your mini aircraft couldn't beat that pc's chopper sound.
There's also an option in Bios that you can enable and make the computer more silent.
Thanks for the links TechZ.

Jason even my computer sounds the same coz of the fans inside and love that sound. :D

Or you can wire your tower into a closet! :0) I know my computer sounds like a mini aircraft..

A few other great links on the same subject:

http://www.silentpcreview.com/
http://www.endpcnoise.com/