PC Fan NOCTUA NF-P14s redux 1500 PWM:The NOCTUA NF-P14s redux 1,500 PWM fan is based on award-winning models that have received the NOCTUA branding. It employs the power of nine blades of an integrated 140mm diameter rotor. Blade speeds are up to 1,500 rpm. Air flow is increased by notches at the end of the blades. The fan connects to the motherboard via a 4-pin connector. It also offers an unprecedented average time of trouble-free operation of over 150,000 hours (17 years!). All of this with outstanding performance, legendary quiet operation and all the great features that will be appreciated by true computer enthusiasts.  Innovative PWM IC control with SCDNOCTUA NF-P14s redux 1500 PWM supports fully automatic speed control . Its main advantage is the smooth Smooth Commutation Drive (SCD), which eliminates undesirable jumps and delivers quieter operation, especially at slower rotation speeds.  SSO bearingsThe well-proven proprietary Noctua bearings have been further refined to provide the quietest possible operation. NOCTUA NF-P14s redux 1,500 PWM uses optimised SSO bearings with a rear magnet positioned closer to the axis, offering improved stability, precision and durability.  Extensive connection supportThe fan is equipped with a 20cm and an optional 30cm extension cable, however, you can plug it into almost any spacious cabinet. Both cables are fully braided and the Y-structure allows the second fan to connect to the same PWM head for automatic speed control.Additional information:Basic:Bearing: SSO (self-stabilising oil bearing)Speed: 1,500 rpm.Minimum speed: 450 rpm.Air flow: 133.7 m3/hNoise level: 25.8 dB(A)Static pressure: 1.91mm/H2OMax. Power: 2.4WMax. Current consumption: 0.2AVoltage: 12VLifetime:> 150,000 hoursConnector:4-pole with PWM controlStandard Packaging:NOCTUA NF-P14s redux 1,500 PWM fan4 fan screws