"Although at first I was thoroughly skeptical that the Zalman PSU would make
any difference to the noise that emanates from my PC, however I was glad to
be proven completely wrong. The PSU is nearly what it claims to be, Silent.
The difference in noise levels was more noticeable when all case fans were
run at half speed."
FULL STORY @ DEVIANTPC (http://www.deviantpc.com/reviews/zalmanpsu/index.shtml)