Recommend for Intel® Core™ X-series Processors, Socket FCLGA 2066, Intel® Xeon® Processor, Socket FCLGA 2011 Square ILM, 60x60x25 mm Side-Blow Fan with PWM Function, Copper Base with H.C.C. (Heat pipe Contact CPU) Technology, Heatpipes Embedded for 2U&Up Server Solution, Support CPU Power up to 165 Watts Heat Dissipation.