I personally don’t mind. It’s white noise to me. But tomorrow I will use a decible meter to get a reading on these fans and post on this and my build thread.Because it is a 140w lamp, the radiator needs relatively strong power to dissipate heat to prevent burnout.
When I usually test the lamps and lanterns, 10 sets of them are tested together, and the sound they make is not too loud.
Maybe your environment is very quiet