Sapphire pulse rx6800 fan anormal noise

[badsykes]

Hi All
I need an input on this video that i recorded.I do believe there is an anormal noise comming from GPU fans when in load.This sound is different than the air turbulence.

https://drive.google.com/file/d/1Z6l_DQ4qGRM0bXkjf-qCzEgv6MRWdrbJ/view?usp=sharing