The StarTech.com Socket 7/370 CPU Cooler with its 2cm fan cooling fan is a combination heatsink and fan designed to cool high-performance CPUs. It sports an extra-large heatsink with enough cooling capacity for Pentium III and Celeron CPUs up to 1.4 GHz. A quiet running 6x2 cm brushless ball bearing DC motor coupled with a high-efficiency blade design is capable of moving 21.46 CFM (cubic feet per minute) of air. Power is supplied to the fan using a 3-lead TX3 connector that plugs into the motherboard and allows the system to monitor fan speed and operating status. For LP4 connection, add optional accessory CPUFANADAPT.