Dynatron K666 Cooling Fan/Heatsink - 2.36in Maximum Fan Diameter - 197.9 gal/min Maximum Airflow - 5000 rpm - Dual Ball Bearing - 4-pin PWM - Socket H2 LGA-1155, Socket H LGA-1156 Compatible Processor Socket - Retail

4-pin PWM connector enables quick and stable connection with processors The fan and heatsink combo lets you experience efficient cooling and wintry air pleasure Features dual ball bearing for higher heat endurance and reduced noise emissions