Whistling noise from MacBook pro 15 fans?

Question

macbook

I wonder if everyone has a MacBook pro with a good load and with a strong rotation of the fans makes a whistling sound from the coolers? It seemed like before that this was not the case and there was a "clean" pleasant sound of the fans. And now it seems as if the whistle is light, or ultra white noise that buzzes in the ears
ps recently changed in the apple store - claudia, battery and display. Macbook pro 15 mid 2015

Answer 1

Everyone has.
At 6000 rpm they all whistle like that.