Antec FrigusAir A400 ARGB Air CPU Cooler, 77 CFM, Silent RGB 12CM PWM Fan with controller, Direct Heat-Pipes, Intel 1700, 2066, 115x, AM 3/4+. 4-PIN Connector PWM Silent Fan - Automatically controls the fan speed according to the temperature of CPU efficiently and decreases fan noise. Technical Design of Direct-Touched Heat Pipes - Attach the aluminum cold plate to the surface of a CPU directly, and it can constantly reduce the heat by passing the thermal energy to every fin. 4 Pure Copper Heat Pipes - High thermal conductivity can take the heat out of the CPU quickly. Easy Installation, Longer Lifespan