Noctua NH-U12DX i4, Premium CPU Cooler for Intel Xeon LGA20xx (Brown) Classic 120mm slim-tower design combines outstanding cooling performance with excellent case-, RAM- and PCIe-compatibility Does not overhang the RAM or PCIe slots on most current motherboards with Square ILM type sockets Highly optimised NF-F12 120mm Focused Flow fan with PWM support and Low-Noise Adaptor for automatic speed control and ultra-quiet operation Supports both Square ILM and Narrow ILM type LGA20xx (LGA2066, LGA2011-0, LGA2011-3) sockets as well as LGA1356 and LGA1366 based Intel Xeon platforms Includes award-winning NT-H1 thermal compound; Renowned Noctua quality backed up by 6-year manufacturers warranty