The two-fan cooler designed for AMD Ryzen processors with TR4/SP3 socket uses automatic speed control and sophisticated blades. They direct airflow so that the cooling of key components is as effective as possible. Unlike many other fans, the NOCTUA NH-U9 also has silicone corners, raised above the surface, dampening vibrations. Just like the weight (only 895g), the operating noise of the fan is virtually silent-it does not exceed 16.3dB after connecting the low-noise adapter. The NOCTUA NH-U9 cooler is nearly 14dB quieter than a whisper on the acoustic scale.