You can control the fan curve in AI Suite III or the BIOS.
I aquired a Strix Z270F myself, and been suprised by this limitation too, and I have to add that the "CPU fan step up" and "CPU fan step down" settings in the bios are not working (tried with DC and PWM fans).
Can we expect a bios upgrade ?
I really wish we could have this limit raised to 85-90C seeing as 7700k can easily spike to 85C under heavy load without any OC at all.
That makes the fans go totally crazy..
Me too. And I've checked on a friend's computer - MSI motherboards allow CPU fan control up to 100C as well. I'm getting the impression that I bought an unfinished product here...
Oh well, I daresay if the people who are annoyed by it make enough noise about it, it'll be put on the wishlist for the next BIOS/AI Suite III version. One can hope.