iXtrema pro quiet fans are the only fans in the industry to be designed with silence and optimal airflow in mind. Smaller, domed motor hub, larger, more dramatic fan blade sweep area, they offer unrivaled performance along with a noise characteristic that makes it a favorite among professionals. There might be fans that offer more airflow or lower noise levels, but when it comes to a balance between the two, these fans cant be beat, especially with fluid dynamic bearings and reduced vibration.Specification. Rated DBA - 8.. RPM - 1500.. CFM - 10.. Operating voltage - 8-14V.. Current draw - 0.016A.. Power consumption - 0.20W.. Bearings - 2nd generation fluid dynamic bearings.. Dimensions - 60 x 60 x 25 mm.