Continuing the legacy of Noctua’s classic NH-U-series, which has received more than a thousand awards and recommendations from international hardware websites and magazines, the NH-U14S has become a benchmark for high-end 140mm single tower coolers. The TR4-SP3 version is a tailored custom model for AMD’s TR4/SP3 platform (Ryzen Threadripper / Epyc) and features a larger contact surface as well as the latest SecuFirm2™ mounting system for socket TR4/SP3. Topped off with the renowned quiet NF-A15 PWM 140mm fan, Noctua’s proven NT-H1 thermal compound and a full 6-year manufacturer’s warranty, the NH-U14S TR4-SP3 forms a complete premium-quality solution that combines maximum performance and superb acoustics for enthusiast-grade TR4/SP3 systems. FAN Specification: Model: Noctua NF-A15 PWM Bearing: SSO2 Max. Rotational Speed (+/- 10%): 1500 RPM Max. Rotational Speed with L.N.A. (+/- 10%): 1200 RPM Min. Rotational Speed (PWM, +/-20%): 300 RPM Max. Airflow: 140,2 m³/h Max. Airflow with L.N.A.: 115,5 m³/h Max. Acoustical Noise: 24,6 dB(A) Max. Acoustical Noise with L.N.A.: 19,2 dB(A) Input Power: 1,56 W Voltage Range: 12 V MTTF: > 150.000 h