How loud is Dell PowerEdge R630?

With 40% speed on all (7?) fans at 20-25°C, the R630 makes 60-65 dBA. With 30% speed on all fans at 16°C (but have to set to 30% manually), the R630 makes around 4-6 dBA less. Manual: sudo ipmitool raw 0x30 0x30 0x01 0x00 sudo ipmitool raw 0x30 0x30 0x02 0xff 0x1E Change 0x1E to the hexadecimal of the percentage. (0x1E = 30%, 0x19 = 25%) Automatic: sudo ipmitool raw 0x30 0x30 0x01 0x01