As usual Noctua ships a low noise and an ultra low noise adapter with the fan, these connectors allow you to bring down the noise level from 17.6dBA to 13.1dBA and 7.9dBA, respectively.
Due to its more compact size, the NH-U9B is ideal for HTPCs and small cases as well as all other applications that don't provide sufficient space for its bigger brother NH-U12P.The NH-U9B is available immediately at a recommended price of EUR 46.90 ($54.90).
The NH-U9B is fitted with Noctua's new NF-B9 premium fan that boasts exceptionally high airflow and pressure performance at extremely low noise levels. Bevelled blade tips, Vortex-Control Notches as well as Noctua's SCD drive system and premium-grade SSO-Bearing guarantee outstanding quietness and long-term stability. Just like the NH-U12P, the NH-U9B comes with a nickel-plated finish and Noctua's NT-H1 high-end thermal compound, making it a total quality package for the highest demands!