XF050 | 140 mm | Type Fan | Suitable location Computer case | Rotational speed (max) 900 RPM | Maximum airflow 41.37 cfm | Fan connector 3-pin + 4-pin | Noise level 20 dB
XF051 | 140 mm | Type Fan | Suitable location Computer case | Rotational speed (max) 700 RPM | Noise level (high speed) 30 dB | Maximum airflow 62.05 cfm | Pulse-width modulation (PWM) support Yes | Number of fans 1 fan(s) | Fan connector 4-pin