Yup, thought so.
This is the fastest fan I could find, its 3500 RPM and puts out 62 CFM - http://www.frozencpu.com/products/1..._High_Speed_Fan.html?tl=g36c15s58&id=SUKbnQGf
The vast majority of 80mm fans are around 20 to 25 CFMs and around 2000 rpm. HGL fans are quite beafy and strong, but totally inefficient technically.
This is the fastest fan I could find, its 3500 RPM and puts out 62 CFM - http://www.frozencpu.com/products/1..._High_Speed_Fan.html?tl=g36c15s58&id=SUKbnQGf
The vast majority of 80mm fans are around 20 to 25 CFMs and around 2000 rpm. HGL fans are quite beafy and strong, but totally inefficient technically.