Noctua makes excellent products and the NF-S12B FLX is no different.
It is certainly a unique fan in terms of aesthetics, design and engineering.
This is especially evident in the attention to detail that Noctua has paid
to the fan - for example, the beveled blade tips. Using the included
noise-reduction adaptors, you can make the fan run almost silently without
compromising performance too much - not that it is loud by any means even at
the normal setting.
FULL STORY @ OVERCLOCKERSONLINE (http://www.overclockersonline.net/index.php?page=articles&num=3051)