Silverstone FHS 120X Fan Review – 4000 RPM Beast

Output Noise

I use a Class 1 Bruel & Kjaer 2270 G4 sound analyzer equipped with a Type 4955a microphone with a dBA-weighted dynamic range of below 6 dBA and up to 110 dBA. All tests are conducted inside a hemi-anechoic chamber with close to 6 dBA noise floor and at 25–28 °C ambient. The test subject is placed a meter from the sound analyzer.

Full & 70% Speed

Fan_Noise_Full_Fan_Speed

Fan_Noise_70_Percent_Fan_Speed

Speed (Percentage) – Noise

I use a different setup to drive the fan for noise measurements, so there might be a difference in the readings of the Longwin machine, especially in the max fan speed reading.

Fan_Percentage_Noise

Fan_Speed_Noise