Some reports of issues here: https://www.reddit.com/r/nvidia/comments/46qo9z/avoid_zotac_amp_extreme_series_if_you_plan_on/
While the fan issue is annoying, the next issue is what really gets my blood boiling as I haven't gotten a peep out of Zotac about it despite being in contact with their support for nearly 8 months now.
The basics of the issue is this: the 980 Ti AMP! Extreme does not actually conform to NVIDIAs standard overclocking methods like Zotac claims. Although voltage control has been put back in the hands of the user, Power control has not. Out of the box I noticed that my GPU would throttle because it was TDP limited. This seemed wrong for a companies top end model that uses 2 8-pin PCIe power connectors, but whatever. Knowing what I do about GPU overclocking, this is an easy fix. Even though I wasn't overclocking, I should easily have been able to adjust be power target limit in software like MSI Afterburner. I jumped in and tweaked the limit to 111% to fix the issue. Unfortunately, nothing changed. Additional testing revealed that this GPU ignores the limit set by software and has other power reporting issues that I won't go into here (I figure this post will be long enough).
After over 8 months of contact with their support, these are the only three responses I got (paraprhased):
1) This GPU ships with a 258W TDP which you should never reach and is more than enough (a lie - both of my test units hit this limit under some scenarios without any overclock).
2) We specifically conformed to NVIDIAs voltage control mechanisms for this GPU after people complained about the 980 model we released, but we can't guarantee overclocking settings and users are mistaken when they think that overvolti got will help their overclock. (Absolutely nothing in this response referenced the actual issue I had with power limit. I never asked anything about voltage)
3) We have already responded twice and won't respond again.
At this point I am forced to accept that they don't know how to design high end GPUs and refuse to admit as such. All I can do is let others know. This GPU is certainly very fast out of the box, but also does not conform to NVIDIAs standard toolset and cannot effectively be tweaked any further. In my case, I didn't even want to overclock, I just wanted to stop the card from throttling at its stock frequencies, but I could not accomplish that. I suggest you look at the other manufacturers for your high end needs.
That sounds like it could hold you in the low 1400's
Something else that I should point out is that Steve at Gamers Nexus was unable to look into any issues that may have been lingering with the 980 Ti AMP Extreme design because (surprise surprise) Zotac stopped sending him review units after the article I linked.
And it looks like i'l be avoiding Zotac hardware.