Prolimatech Megahalems CPU Cooler and Dual Ultra Sleek Vortex 14 PWM Fan Bundle Includes TWO Ultra Sleek Vortex 14 PWM Fan, which offers 98 CFM of airflow and 0.9 mmH20 of static pressure for massive cooling performance at only 18 dBa of noise! In addition, the Ultra Sleek Vortex 14 is only 15 mm thick, helping to keep RAM slots free from obstruction. At only 74 mm wide (a total of 89 mm wide with a single Ultra Sleek Vortex, 104 mm with dual fans installed), the slim profile of the Megahalems CPU cooler frees up RAM slots that can be blocked by thicker coolers. The nickle plated copper heat pipes are lined up in a straight line to prevent air back draft allowing air to easily pass through the heatsink body. Minimal air resistance between fins allow for high performance with minimal noise. Includes Prolimatech's PK-1 Thermal Compound, which is both easy to apply and provides excellent thermal conduction between the CPU and base plate. The Megahalems Heatsink features a quick and easy mounting system for LGA 775, 1366, 1156/1155, 1150 and 2011 and AM2/AM2+/AM3/AM3+/FM1/FM2. Also sold Fanless on Amazon.