Socket compatibility: Intel Xeon LGA4677, Material: Copper, Aluminium, NSPR: 179, Bearing: SSO2, Max. rotational speed (+/- 10%): 1500 RPM, Min. rotational speed @ 20% PWM (+/-20%): 300 RPM, Max. airflow: 140,2 m³/h, Max. acoustical noise: 24,6 dB(A), Warranty: 06 Years, NH-U14S-DX-4677.