I just built a new PC and the graphics card has the fan speed always maxed out no matter what and the core clock always at 214 mhz no matter what.
Wattman doesn't even detect fan speed let alone allow me to change it...
The noise is REALLY anoying.
I tried everything from reinstalling drivers to using amd driver cleaner tool, updating, rebooting, etc.
Also tested with my brother's rx 480 and no issues whatsoever.
Any ideas on what could be happening?
In case someone else has this problem, here's how i managed to solve it:
I removed the graphics card and inspected it.
Upon inspection it seemed as if there was a disconnected cable inside it...
I removed the fans/fan plastic structure, and the cables were connected. Though upon a more careful inspection i noticed that one of the connections had a pin out of place. I then pushed the pin back in, reassembled the card, pluged it in, and everything owrked fine so far.