Dynatron R18 80mm 2 Ball Intel Sandy Bridge EP/EX Processors for socket 2011 1U Server

At Duty Cycle 20%: 1000 RPM, At Duty Cycle 50%: 3500 RPM, At Duty Cycle 100%: 6000 RPM At Duty Cycle 20%: 6.5 CFM, At Duty Cycle 50%: 11.2 CFM, At Duty Cycle 100%: 19.1 CFM Copper Heatsink with Skiving Fins