The NH-U14S is the 14cm top model of Noctua痴 classic U-series single tower CPU coolers, which have received more than 400 awards and recommendations from the international press. While the large, six heatpipe design and the NF-A15 140mm fan with PWM support for fully automatic speed control allow the cooler to best the renowned quiet cooling performance of all other U-series coolers, its 52mm slim shape still assures full compatibility with tall RAM modules on LGA2011/LGA2066. Topped off with the trusted, pro-grade SecuFirm2 multi-socket mounting system and Noctua痴 proven NT-H1 thermal compound, the NH-U14S is a complete premium quality solution that combines superb performance, high compatibility and quiet operation.NF-A15 140mm PWM FanThe NF-A15 is a premium quality quiet 140mm fan with a round frame that complies with Noctua's AAO standard. Featuring sophisticated aerodynamic design measures such as Flow Acceleration Channels, the NF-A15 further improves the renowned quiet cooling performance of the award-winning NF-P14.Full RAM compatibility on LGA20xxWith its 52mm slim design tailor-made for LGA20xx (LGA2066 & LGA2011), the NH-U14S will not overhang the RAM slots on this platform, thus assuring full compatibility with tall memory modules. On some LGA115x and AMD motherboards, the front fan may overhang the first RAM slot, so standard height RAM (up to 32mm) should be chosen when using the first slot.SecuFirm2 mounting systemNoctua's SecuFirm2 mounting systems have become synonymous with quality, safety and ease of use. Supporting Intel LGA115x (LGA1150, LGA1151, LGA1155, LGA1156), LGA2011, LGA2066 and AMD (AM3+, AM2+, FM1, FM2, FM2+), the SecuFirm2 mounting included with the NH-U14S assures perfect contact pressure and maximum convenience on all current sockets.Dual Fan ReadyFor users who want to achieve even better performance by adding a second, optional NF-A15 fan to create a push/pull setup, the NH-U14S includes fan clips and an extra set of custom-designed anti-vibration pads that allow to off-set the rear fan by 5mm to improve acoustics in dual-fan mode.Scope of deliveryNF-A15 PWM premium fanLow-Noise Adaptor (L.N.A.)NT-H1 high-grade thermal compoundSecuFirm2 Mounting KitAnti-vibration pads and fan-clips for second NF-A15 (optional)Noctua Metal Case-Badge