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Noctua NH-L12S is our official recommendation. The fan is underneath the heatsink, so it is further away from the side panel and the heatsink in between muffles the noise a bit more.Furthermore, since you are using ryzen, assuming you have precision boost turned on. It is like trying to overclock whenever possible automatically. I would recommend adjust your fan curve, raising the baseline rpm to avoid sudden ramp up of the fans.
Noctua NH-L12S is our official recommendation. The fan is underneath the heatsink, so it is further away from the side panel and the heatsink in between muffles the noise a bit more.
Furthermore, since you are using ryzen, assuming you have precision boost turned on. It is like trying to overclock whenever possible automatically. I would recommend adjust your fan curve, raising the baseline rpm to avoid sudden ramp up of the fans.