Boasting precisely engineered fan blades and ultra silent spinning, the LEPA VORTEX LPVX12P case fan delivers the best of both worlds - exceptional thermal performance and optimized acoustics. The vortex frame design also integrates air flow for better cooling performance. PWM speed control is supported. Up to 50,000 hours of MTBF ensures years of hassle-free use. The LEPA LPVX12P delivers up to 63.91CFM of air flow to speed up the air circulation inside the chassis for better cooling. This PWM fan runs at 600 ~ 1600 (±10%) rpm with maximum 25dBA noise level helping create a quiet working and entertainment environment.