The Noctua flagship model NH-D15 is a dual-tower cooler of elite class, based on the legendary NH-D14, and continues its pursuit of ultimate cooling performance with the highest level of quiet operation. With its wider heat pipe layout and two NF-A15 140 mm premium fans featuring PWM support for fully automatic speed control, the NH-D15 can further enhance the award-winning efficiency of the NH-D14. The overall high-quality package of the NH-D15 is completed by the proven SecuFirm2 professional mounting system and Noctua's renowned NT-H1 thermal paste. Whether for overclockers or silent enthusiasts, the NH-D15 is a premium solution for the highest demands.

Based on the award-winning NH-D14, which has received over 350 recommendations and awards from leading international hardware websites and magazines, the NH-D14 is one of the most successful premium coolers of all time. The NH-D15 achieves improved silent cooling performance compared to the NH-D14, thanks to the wider arrangement of the heat pipes and the two NF-A15 fans.

The dual-tower design with 6 heat pipes offers more cooling surface, better heat distribution, and superior airflow efficiency in dual-fan operation compared to conventional single-tower coolers. The width of the cooling fins has been increased from 140 mm to 150 mm, and the distance between the heat pipes has been widened. The improved heat distribution over a larger surface area achieved through these measures significantly contributes to the superior efficiency of the NH-D15.

Thanks to the recessed lower cooling fins, the NH-D15 provides 62 mm of clearance for tall memory modules in single-fan operation—most current high-end modules can be used without any issues.