The newest fan offerings from Noctua are real gems! They are quiet (silent, when
used with the ULNA,) and move a respectable amount of air. While I hate to make
generalizations about such things, these fans exhibit the high quality, innovative
features and performance that products from this part of the world are famous for.
Noctua has clearly set out to redefine what the future of quiet cooling will be, and
if these fans are any indication, they have a very good start.
http://www.tweaknews.net/reviews/noc...-R8_case_fans/