Where the ASUS and MSI boards are silent to in-audible with the chipset fan for the X570 motherboards, Gigabyte kinda messed it up. Users reported high pitch whines and a lot of noise with the first r... New Gigabyte X570 BIOSes adds three profiles positions for the chipset fan
In the x570 Aorus Master, I've yet to hear the chipset fan--it's been silent regardless of bios version. My theory is that some people hear "a fan" ramp up and down, perhaps a GPU fan initializing, etc., and they immediately think "chipset fan" as if it's the only fan in the system... The power suggestion holds over some people is incredible! No wonder marketing pays so well....! Two feet away--side panel off--I've yet to hear it.
Still gonna wait for B550 I don't trust these small non-replacable fans, they usually break after 2 years.
Bearings? Maybe sleeve bearings. Dont know why but always have impression of small fans as cheap and nasty.