Noctua NF-R8-1800 Case cooler

80mm Rotational Speed (+/- 10%) 1800 RPM Rotational Speed with L. N. A. (+/- 10%) 1300 RPM Rotational Speed with U. L. N. A. (+/- 10%) 800 RPM SSO Acoustical Noise 17 d B(A) Acoustical Noise with L. N. A. 10 d B(A) Acoustical Noise with U. L. N. A. 7 d B(A)