Noctua NF-S12 80mm & 120mm Fans Review
@ 2007/03/16Without a doubt, these are the quietest fans I have used to date. A standard enclosure can hold up to three 120mm fans generating 30dBA plus each. That makes for a very noisy situation. The NF-S12's in U.L.N.A. will generate around 1/5th of that. Just imagine these fans cooling a radiator in a watercooling setup; now that would be an ultra quiet PC.
I can only recommend those to people who wants silence.
PS: no need to use the U.L.N.A, even at 12V they can't be heard