Noctua NF-A14x25r G2 PWM Sx2 PP 1500RPM 140mm Next Gen Push-Pull Fan Set

Excellent on-application acoustics While many fans produce unpleasant; high-pitched noises when installed in typical applications such as on heatsinks or radiators; the NF-A14x25 G2 has been carefully fine-tuned for optimal on-application acoustics.