09/07/2021
The layout of the 120mm fan frame is generally standard, but in the middle it is reinforced with additional stiffeners, and rubber dampers against vibration are glued on the corners on both sides. From aerodynamic optimizations, we can note the notches on the translucent impeller, which has nine blades of the usual, slightly curved configuration. The propeller is made on the basis of a hydraulic bearing, has a speed range from 500 to 1500 rpm, variable by PWM. In terms of noise level, everything is relatively good, within the range of 500-800 rpm, the impeller is almost inaudible, in digital terms it is from 37 to 40 dB (A), if measured with a sound level meter attached close to the bearing.