Well isnt this out of SPCR spec? I think your spec is something ~12-15 dBA/1m?
Or check this one its so quiet to... Laughing i think its wise to think if your psu give ~ 40 db noise that you'll be fine with 30~dB fan?
Those numbers are at 1 CM, not 1 meter.
Then how you sure Cooler was measured 30 dB @ 1 m not 1 cm?
Because unlike other review sites, MikeC specifies the distance that he takes the measurements at. In general, he measures at 1 meter. In the past (when that Verax review was), he took the measurement at 1 cm. I don't know why he did this, but I suspect it has to do with the fact that he didn't have the appropriate equipment to measure sound then. Even right ON the page you linked, he specified the distance.
In fact on page 2
of the very article you linked, you can see that he had a much different tool at the time. Its measurements were very poor below 43 dBA.
As for our specs, where did you get that figure? 30dB at 1m is the LIMIT at which we consider a computer to be silent. Even at that volume, some of us aren't satisfied, Many of us strive for lower than that. And 30dB applies to the whole computer, not an individual component like a fan.