be quiet! SilentWings PWM 80mm, Fan, Black be quiet! SilentWings PWM 80mm. Type: Fan. Product colour: Black http://uk.hardware.info/reviews/2614/393-8092120140mm-case-fans-reviewed 393. That's the magic number of case fans we've tested at the Hardware.Info testing lab for this review. One result is that we can now say that we can answer the question which casefan you should buy. Another result is that we have seen and had enough o...