Noctua NF-P14R Redux 140mm 1500RPM PWM Fan

The new redux edition NF-P14R 140mm fans feature a round frame, superior airflow, an industry grade SSO bearing, an MTBF rating of over 150,000 hours and a 6 year Noctua warranty. The NF-P14 redux are a proven premium choice that provides trusted Noctua quality at an attractive price point. The performance-oriented top speed of the 1500RPM PWM version is ideal for high efficiency case, radiator and CPU cooling as well as other applications that require both extended performance headroom and PWM for automatic speed control.

Xtreme Systems User Review
"Simply put, Noctua did a splendid job and it's clear that all five are premium products, because they can barely be heard even with an open case and they perform excellent." Full review