6 heatpipes, 140mm size and two premium grade 140mm fans for superb quiet cooling efficiency, ideal for near inaudible workstations in noise sensitive applications (audio/video production, engineering, etc.) Supports LGA4677 socket for 4th generation Intel Xeon Scalable (Platinum, Gold, Silver or Bronze) and w9, w7, w5 or w3 series processors CPU-specific carrier frame required (included with boxed retail CPUs and available separately for tray CPUs) Award-winning NF-A15 fans support PWM for automatic speed control through the motherboard: silent at idle, full CFM performance when necessary Pre-applied NT-H1 thermal compound and easy, straightforward installation with included Torx® T30 mounting tool