"The VIZO Propeller II System Cooler is an upgrade over the old boring black slot fan and an updated version of their original VIZO Propeller. It features a translucent colour casing, larger blower fan, and a directed exhaust. Everything is still very basic in that the fan installs into your typical expansion card slot, and is powered off a standard Molex connector. But with the quieter blower, and the proposed CFM rating, it claims it can improve airflow and performance."