The NH-L9a-AM4 chromax.black is an all-black version of Noctua’s award-winning NH-L9a-AM4 low-profile quiet CPU cooler for AMD Ryzen based HTPCs & Small Form Factor (SFF) builds. Thanks to the same proven heatsink design & NF-A9x 14 PWM fan, it stays true to the NH-L9a-AM4’s successful formula of fusing a height of only 37mm with strong performance & excellent quietness of operation, as well as 100% RAM & PCIe compatibility. At the same time, the chromax.black version with its black fan & black coated heatsink combines these assets with a sleek stealth look. Topped off with the renowned Secu Firm 2 low-profile mounting system for AMD AM4, Noctua’s enthusiast-grade NT-H1 thermal compound & a full 6-year manufacturer’s warranty, the NH-L9a-AM4 chromax.black is a premium choice for customers who seek an ultra-compact heatsink that looks just as great as it cools. Award-winning NH-L9a-AM4 cooler Tens of thousands of enthusiast users all over the world swear by the NH-L9a-AM4’s quality & performance. Recommended by more than 50 international hardware websites & magazines, it is renowned as being one of the best low-profile coolers for AMD Ryzen CPUs & APUs. chromax.black design The NH-L9a-AM4 chromax.black is black from head to toe: Featuring a black coated heatsink, a black fan with black anti-vibration pads, black fan screws & black mounting parts, it’s right at home in all-black builds & easy to integrate with other colour schemes. 37mm low profile Due to the slim 23mm heatsink & the NF-A9x 14 low profile fan that measures only 14mm in thickness, the NH-L9 stands a mere 37mm tall, which makes it absolutely ideal to be used in compact HTPCs or Small Form Factor cases that offer minimum clearance for CPU coolers. 100% RAM compatibility The NH-L9a-AM4 has a compact footprint that fully complies with the socket keep-out zones specified by AMD. This means that neither the heatsink nor the fan overhang the RAM, so the cooler provides easy access to the slots & is fully compatible with tall memory modules. 100% compatibility with PCIe cards on mini-ITX Some AMD-based mini-ITX motherboards have the PCIe slot located close to the CPU socket zone. While larger coolers that exceed this zone may block the PCIe slot, the compact-sized NH-L9a-AM4 provides full compatibility with PCIe cards. Easy access to near-socket connectors Many low-profile coolers use larger fans or heatsinks in order to achieve sufficient performance, but by protruding over the socket zone, they make it difficult or even impossible to reach near-socket connectors on tightly packed ITX motherboards. Thanks to its compact footprint, the NH-L9a-AM4 provides easy access to all connectors & components. NF-A9x 14 PWM premium fan The highly optimised, award-winning NF-A9x 14 premium fan features Noctua’s proprietary AAO frame as well as sophisticated aerodynamic design measures. Supporting PWM for fully automatic speed control, the NF-A9x 14 allows the NH-L9a-AM4 to stay remarkably quiet. Low-Noise Adaptor Allowing the maximum speed of the NF-A9x 14 PWM fan to be reduced from 2500 to 1800rpm, the included Low-Noise Adaptor (LNA) makes it possible to achieve near-silent setups with suitable CPUs/APUs that only create smaller heat loads. Custom-designed Secu Firm 2 mounting for AM4 The NH-L9a-AM4 comes with a custom-designed Secu Firm 2 mounting system for the AM4 socket of AMD’s Ryzen platform. Allowing the heatsink to be fixed from the back of the motherboard, it makes installation easier than ever, all while maintaining the trusted Secu Firm 2 quality. NT-H1 thermal compound Noctua’s much-acclaimed NT-H1 is a pro-grade TIM solution that provides minimum thermal resistance, excellent ease of use & outstanding reliability. Chosen again & again by overclockers & enthusiast users worldwide, it has established itself as a benchmark for premium-quality thermal compounds. Soldered interface between heatpipes & fins With many heatsinks, the fins are press-fitted to the heatpipes. Due to the different thermal expansion coefficients of copper & aluminium, this fit can loosen over years of thermal cycling, which may lead to reduced performance. By contrast, the NH-L9a’s fins are soldered to the heatpipes in order to guarantee a superior thermal interface that doesn’t deteriorate even after many years of usage. 6-year manufacturer’s warranty Noctua products are renowned for their impeccable quality & outstanding longevity. Like all Noctua fans, the supplied NF-A9x 14 features an MTTF rating of more than 150.000 hours & the entire NH-L9a package comes with a full 6-year manufacturer’s warranty.