Loud CPU fan, but low RPM

[Arman276]

Problem: Fresh CPU fan, on a fresh new computer, is loud at low RPMs after 4 days of building the computer. 

 

OS: Win 10 64-bit

 

Relevant Specs: 

- CPU: Ryzen 5 2600 (wraith stealth cooler)

- Mobo: B450 I Aorus Pro Wifi

- PSU: Seasonic FOCUS 650W

 

Steps Taken:

- Confirmation that it is the CPU fan: held thumb over fan hub to stop it, and noise stopped. Released pressure slightly to let fan spin a small amount, and noise was back.

- Idle dB: 45 (was WAY WAY lower when the comp was built last week, for a few days)

- Stressed CPU + GPU dB: 48 (literally 3 higher only)

- Unscrewed cpu cooler to see if orientation was the problem, no noise change.

- Went in BIOS and put fan to silent, but as expected it did nothing because it isn't the fan speed, its some other noise.

- No cables or anything in the way, and no info online.

 

[elon]

fan bearing gave up,

time for a new aftermarket cooler.