Dynatron K666 60mm 2 Ball CPU Cooler

At Duty Cycle 0-20%: 1600 RPM At Duty Cycle 50%: 2300 RPM At Duty Cycle 100%: 5000 RPM At Duty Cycle 0-20%: 8.5 CFM At Duty Cycle 50%: 12.2 CFM At Duty Cycle 100%: 26.45 CFM Aluminum & Copper