noctua nh-u9s, premium cpu cooler with nf-a9 92mm fan (brown) noctua continuing the renowned legacy of noctua’s award-winning nh-u9 series, the nh-u9s is a premium quality quiet cpu cooler in classic 9cm size. its asymmetrical design with 5 heatpipes not only provides even better cooling performance than the previous generation but also improves compatibility: thanks to its 95x95mm footprint, the nh-u9s clears the ram and pcie slots on all intel and most amd based mainboards, including μatx and itx. combined with its 125mm height, this makes the nh-u9s a highly versatile solution with excellent case, ram and pcie compatibility. the included nf-a9 premium fan supports automatic speed control via pwm for outstanding quietness of operation and a second, optional nf-a9 fan can be added for further improved performance in dual fan mode. topped off with the trusted, pro-grade secufirm2 multi-socket mounting system, noctua’s proven nt-h1 thermal compound and full 6 years manufacturer’s warranty, the nh-u9s is a deluxe choice through and through.