Quote: "SilverStone Technology has introduced a new version of the giant 180mm fans used in their "vertical motherboard" chassis series (the Raven RV01, Raven RV02, and Fortress FT02): the SilverStone SST-AP181 Air Penetrator fan. Benchmark Reviews compares the performance of this new fan to the stock fans in a Fortress FT02 case to see if the extra performance justifies their price."

Read the review here