Noctua nf p12 vortex control 120mm quiet case fan the nf p12 has been specifically developed for applications such as cpu coolers that demand superior pressure and airflow performance thanks to psychoacoustic optimisations like the vortex control notches the new scd drive system and noctuas premium grade sso bearing the nf p12 achieves exceptional quietness and long term stability features 1300 rpm only 198 dba pressure optimised nine blade design vortex control notches smooth