Pro-Clockers posted a review on the Vizo Windstorm and Muffle Case Fans

Ok, this is the tale of two little fans. The first little fan was quiet and low spinning, while the second fan was loud and fast. The first fan would sit in the rear of the case letting hot air escape. The second fan would take its place on top of an overheating processor. Ok, before I get carried away with this silly introduction, Vizo has provided me with two 80mm cooling cases. Each one fits the descriptions of the tale above. Let's see what the Muffle and the Windstorm is all about.

Vizo Windstorm and Muffle Case Fans Review