NOCTUA NH-L9i-17XX 95mm SSO2 Single Tower CPU Air Cooler

The Noctua NH-L9i-17xx is a purpose-built low-profile CPU air cooler designed specifically for Intel LGA1700 (LGA17xx family) sockets, making it a natural fit for Home Theatre PCs (HTPCs), Small Form Factor (SFF) systems, and tightly packed mini-ITX builds where vertical clearance is at a premium. At just 37mm total height — achieved by combining a slim 23mm aluminium and copper heatsink with the ultra-thin NF-A9x14 fan measuring only 14mm — this cooler slips into chassis that simply cannot accommodate standard-height alternatives. The 95mm × 95mm footprint aligns precisely with Intel's LGA1700 socket keep-out zone, which means RAM slots remain fully unobstructed regardless of memory module height, the PCIe slot on mini-ITX motherboards stays clear, and near-socket connectors remain accessible during and after installation. Cooling performance is delivered through the NF-A9x14, a 92mm fan engineered with Noctua's proprietary AAO (Advanced Acoustic Optimisation) frame and refined blade geometry. It operates up to 2,500 RPM via 4-pin PWM for fully automatic speed control, producing a maximum airflow of 57.5 m³/h while generating no more than 23.6 dB(A) of noise. For situations where near-silent operation is preferred, the included Low-Noise Adaptor (LNA) reduces the fan's ceiling to 1,800 RPM. Mounting is handled by a custom backplate-less SecuFirm2™ system tailored to the LGA1700 socket family, simplifying installation on mini-ITX boards that may have limited working space around the socket area. Noctua's NT-H1 pro-grade thermal interface material is included in the box, ready to apply. Unlike press-fitted heatsink fins that can loosen over time due to differing thermal expansion rates between copper and aluminium, the NH-L9i-17xx's fins are soldered to the heatpipes, preserving thermal contact integrity over the long term. Verified Specifications: • Model: NH-L9i-17xx • CPU Socket: Intel LGA1700 (LGA17xx family) • Total Cooler Height: 37mm • Heatsink Dimensions: 95mm × 95mm × 23mm • Heatsink Material: Aluminium and copper • Fan Model: NF-A9x14 PWM • Fan Dimensions: 92mm × 92mm × 14mm • Fan Bearing: SSO2 (Second Generation Self-Stabilising Oil-Pressure Bearing) • Fan Speed: Up to 2,500 RPM (1,800 RPM with LNA) • Airflow: 57.5 m³/h • Noise Level: 23.6 dB(A) (max) • Power Connector: 4-pin PWM • Fan Mounting Orientation: Horizontal • Included Accessories: Low-Noise Adaptor, NT-H1 thermal compound, SecuFirm2™ LGA17xx mounting kit • Weight: 385 g • Colour: Noctua signature brown/beige • RGB: No