One GPU fan running slower than the other...

[amaldevas007]

Hey guys, I have an Asus Gtx 760 direct cu oc edition card ...the problem is today I found that both fans are not spinning at same speed ...the right fan is spinning faster than the left and is tight...but the left fan spins slower and seems a bit loose/shaky....also when I turn off my pc the left fan stops spinning before the right fan stops..
Is there any serious problem with this ??? Plz help ..
Also under heavy load (fan speed at 85%) there is a buzzing sound from GPU but goes away when fan speed decreases ...

 

[Tony_186]

Maybe the screws that hold the fan loosened and that is why you hear the noise and why it is spinning slower but that is just my solution.
If you have any other details on it just reply and i will see what i can do.