SilverStone Technology Air Slimmer 140 140mm Slim Fan, 15.5mm Thick, PWM Control, Shark Force Technology, 0-1700 RPM, 82 CFM, 33dBA, 2mmH2O, Copper FDB Bearing, 140mm x 140mm x 15.5mm, Desktop, Server

Very quiet and has pleasing low tonal quality to sound. Moves alot of air vs past scythe slim fan, but still won't compete with a12x25 or t30 obviously. Worth money for tight spaces

Says 11.3 db on specs reason being i bought itMore like 29db louder than Noctua Slim19 ish db.

Rattling sound only after 50 days of using

These move plenty of air and are very quiet. Great at keeping my pc cool. You can fit them in tiny places or just use them for just about any spot in a big pc case.Most bang for your buck.