Fans
Fans
Fans running heavy at startup can be normal, but thermal noise might appear occasionally as if the engine is idling. It’s good to check if anything needs attention. You have three 120mm fans paired with a budget CPU cooler for your Ryzen 5 2600X and 1660 Super.
When your machine starts up, fans often kick into high gear, which is normal on powerful workstations and servers. This behavior helps safeguard the hardware. Initially, the system lacks temperature data and must check all sensors. Until the scan completes, many brands default to "100%" to avoid overheating. Once the sensors confirm stable readings, the fans will gradually reduce speed. I’d only be concerned if the fans fail to lower after the computer is fully booted and steady.