Try installing msi afterburner or wattman and monitor or adjust your fans there. If it is a defective card it should still preform just as well if not better since it's always cooled. Fans have a long life span even if pushed to 100% all the time.
I already have msi and i have a costum fan profile but its still spins 100% for no reason, the card has two fans one behaves normally the other not and gpu is performing as it should.