Noctua NF-F12 PWM Case Fan 120mm 850.- est. delivery in 2-4 days Key Specifications Maximum speed 1500 RPMConnector 4-pin PWM headerDimension 120x120x25mm SKU:#022855 Product No.:NF-F12 PWM Short link:http://i.nvade.it/5WD See specifications from the manufacturer Description Specifications Teaming up eleven stator guide vanes with a specially conceived seven blade impeller, the NF-F12’s Focused Flow™ system creates outstanding static pressure and focuses the airflow for superior performance on heatsinks and radiators. At the same time, a wide range of advanced aerodynamic design measures, second generation SSO-Bearings and Noctua’s new, custom designed PWM IC for fully automatic control guarantee astounding quietness of operation. The NF-F12 comes with modular cabling, integrated anti-vibration pads and two speed settings for full flexibility. Its commanding performance, exhaustive set of features and Noctua’s trusted premium quality make it an elite choice for use on air coolers, radiators and other pressure demanding applications. Focused Flow™ Frame Designed for pressure demanding applications such as heatsinks and radiators, the Focused Flow™ frame features eleven stator guide vanes that straighten, channel and focus the airflow, which allows the NF-F12 to rival the performance of conventional fans running at much faster speeds. Heptaperf™ Impeller Custom designed for the new Focused Flow™ frame and to work in tandem with the eleven stator guide vanes, the NF-F12’s seven blade Heptaperf™ impeller has been carefully optimised to achieve a perfect balance between power and quietness. Varying Angular Distance and Vortex Control Notches The NF-F12’s stator guide vanes are set out in Varying Angular Distance and feature Vortex-Control Notches. Both measures help to spread the noise emission over a broader frequency spectrum and thus make the fan’s sound pattern more agreeable to the human ear.