Hello my friends,
 
I am new here. So first things first. My name is Pepp and I am from germany. I own the 1080 ti ftw3 for ~5 month now and overall I'm very happy with that card.
 
The first time this card worked perfectly but since 2-3 weeks one of the fans is going crazy. For example, if I play csgo, two of the fans start to spin (everything is fine) but then the 3rd fan starts and is super loud and fast. This goes one for about 5min, then the 3rd fan slows down. Just to go crazy again after another 10min or so and so on. I have installed a fresh windows and the newest driver from Nvidia, but nothing changed.

 
I have downloaded the precision XOC to see the rpm of the 3 fans (see picture). 
My questions are, is that a common thing and do I only need to change the 3 fan curves or not? I am not that experienced with doing that.
And why does that only appear since 2-3 weeks?
I just dont know what the problem is. :)
 
I am playing on 1440p.
 
My system:
Win 10 64 bit
Mainboard: Asus ROG Maximus Hero X
CPU: Intel Core i7 8700k
GPU: EVGA 1080 ti ftw3
RAM: 16 gb
 
Best regards
Pepp

Hi,
yes i can slow it down with the controller if its going crazy. Then there is said 0rpm but I can tell you that this fan is definitely spinning
 

1) Does the issue occur with precision xoc uninstalled from the system?
Yes it does. Thats why I installed it in first place, to see what the problem is.
 
2) Have you inspected the card to make sure all the fan cables are fully seated to their respective fan headers?
Atleast now I did. And nothing changed.

Sadly that's not possible for me.

Are you talking about that switch from normal --> oc ? If so, then yes it still occurs.
 
 

Hello again,
 
so I've tested it now in another system and it still occurs...
 
 
Best regards,
Pepp

I really hate to do it. But thank you for your help.
 
Bye