AMD lists the max core temp as 62C, it will automatically heat throttle around that point. At the moment mine is idling at 34C, with a case temp of 24C, its usually about 10C above case temp for me with CnQ enabled.
Are you using the stock cooler or an aftermarket cooler? My stock cooler isnt super loud but it also isnt dead silent either. If yours sounds like a siren consider an aftermarket cooler.