Dynatron K199 80mm 2 Ball CPU Cooler

At Duty Cycle 0-20%: 1000 RPM At Duty Cycle 50%: 2500 RPM At Duty Cycle 100%: 5000 RPM At Duty Cycle 0-20%: 5.355 CFM At Duty Cycle 50%: 7.654CFM At Duty Cycle 100%: 14.719 CFM Copper