Verdis Reviews posted a review on the Noctua NF-B9 Case Fan
A quote from the article:
>> Noctua NF-B9 Case Fan Review
Continuing with our cooling theme here on Verdis, we take a look at a product from a company that deserves all the accolades it receives. Yes, you guessed it - Noctua. In the past we have seen great performance from products from this manufacturer and so the NF-B9 fan up for review today straight away has high expectations. Let's hope it can deliver.
>> Noctua NF-B9 Case Fan Review