Both the Wing 12 and Silent 12 PWM performed very well, each operated very quietly and put up comparable numbers - the Wing 12 was a real winner performing second best to the Delta very quietly. The Silent 12 PWM performed very close to the Antec Tricool but quieter. The durability and performance combined with dust proof and water proof qualities of the Wing 12 are also great features to see come together in a fan that also looks good. The Silent 8 TC performed well enough although the diode can be somewhat less inconvenient and would work better with double-sided tape. This fan does not seem to be fit for general use although it would work likely work well in certain special applications and when paired up well with smaller heat sinks.

http://www.overclockersclub.com/revi...d_silent_fans/