Noctua NH-U12S Redux CPU Air Cooler

The Noctua NH-U12S Redux is a streamlined, value-oriented 120mm single-tower CPU air cooler built on the proven platform of Noctua's acclaimed NH-U12S. Designed for builders who want Noctua's engineering pedigree at an accessible price, the Redux edition strips extras down to the essentials without compromising thermal performance or build quality. At 158 mm tall and just 45 mm deep (fin stack only), the NH-U12S Redux is compact enough to clear the top PCIe slot on most standard ATX and Micro-ATX motherboards, making it an excellent fit for multi-GPU or card-heavy builds. Its 125 mm total width — measured with the included fan and clips — keeps it well clear of DRAM slots, guaranteeing unobstructed access to all memory channels and full compatibility with tall heat-spreaders or RGB-lit modules. Cooling is handled by the included NF-P12 redux-1700 PWM fan, a 120×120×25 mm unit built around Noctua's SSO bearing. The fan spins between 450 RPM at 20% PWM duty cycle and a maximum of 1,700 RPM, delivering up to 120.2 m³/h of airflow while generating no more than 25.1 dB(A) of acoustical noise at peak speed. PWM automatic speed control means the fan runs near-silent at idle and ramps up only when the CPU demands it. The heatsink uses a nickel-plated copper base and heatpipes paired with aluminium cooling fins. The copper base is precision-machined with a minimal convex profile to maximise contact quality across modern CPU heat-spreaders and distribute heat evenly across all heatpipes. NT-H1 thermal compound comes pre-applied to the base, simplifying installation and removing the guesswork around paste application. Installation is handled by Noctua's SecuFirm2 multi-socket mounting system, which supports Intel LGA1851, LGA1700, LGA1200, LGA1156, LGA1155, LGA1151, LGA1150, and AMD AM5 and AM4 sockets (for coolers purchased since Q4 2021). Noctua also offers free mounting upgrade kits for newer sockets where technically feasible, protecting long-term compatibility. For users seeking additional performance, the optional NA-FK1 dual-fan upgrade kit accepts a second NF-P12 redux-1700 PWM fan along with a Y-cable, extra clips, and Low-Noise Adaptors — all sold separately. The NF-P12 redux fan carries an MTTF rating of more than 150,000 hours, and the entire package is covered by a 6-year manufacturer's warranty. Verified Specifications: • Heatsink Height: 158 mm (with or without fan) • Heatsink Width: 125 mm (with fan); 125 mm (without fan) • Heatsink Depth: 71 mm (with fan); 45 mm (without fan) • Weight (with fan): 710 g • Materials: Nickel-plated copper base & heatpipes; aluminium fins • Included Fan: NF-P12 redux-1700 PWM (120×120×25 mm, SSO bearing) • Fan Speed Range: 450–1,700 RPM (PWM) • Max Airflow: 120.2 m³/h • Max Noise: 25.1 dB(A) • Voltage: 12 V • NSPR: 129 • Socket Support: Intel LGA1851/1700/1200/1156/1155/1151/1150; AMD AM5/AM4 • Fan MTTF: >150,000 hours • Warranty: 6 years