The nh u14s is the 14cm top model of noctuaacirceurotrades classic u series single tower cpu coolers which have received more than 400 awards and recommendations from the international press while the large six heatpipe design and the nf a15 140mm fan with pwm support for fully automatic speed control allow the cooler to best the renowned quiet cooling performance of all other u series coolers its 52mm slim shape still guarantees full compatibility with tall ram modules on lga2011 top