Phanteks PH-F140M25_PWM_BBK01 140mm 25mm case fan

140mm PWM case fan for radiators

The Phanteks M25-140 is a single 140mm by 25mm case fan built for high static pressure. It targets builders who need strong airflow through dense fin stacks such as radiators or heatsinks. The hydraulic bearing and wide PWM range suit both quiet daily use and demanding cooling loads. It connects via a standard 4-pin header and includes no lighting.

Thermals noise and power at typical speeds

At lower RPM settings the fan moves air through restrictive filters and radiators while keeping motor and bearing noise low. The supplier rates noise at 36.57 dB(A) and airflow at 104.62 CFM when the fan runs at its 1800 RPM maximum. PWM control allows precise adjustment between 500 and 1800 RPM so acoustic output matches the thermal demand. A single 4-pin connector powers the unit.

Sustained load behaviour and daisy-chain limit

Under continuous high-load operation the fan maintains its rated speed to deliver consistent cooling for powerful components. The hydraulic bearing is designed for durability during prolonged use at elevated RPM. Daisy-chain cabling lets multiple fans share one PWM signal, though each additional unit adds to the total current draw on that single header. Buyers who need more than one fan per header should verify their motherboard's current limit.