Voitokas

I feel bad for the video card 

Apparently, you can fit it in. With just 5mm of clearance as well. Here is a pic of the case with an NH-D14 inside for comparison.
 

Yep, they'll slow the fans down some, tbh it's negligible difference. Especially if you dont have an OC which is pushing the cooler's limits. At most one or two degree's. 

Alright, thank you!

That'll do it. Try updating your drivers and seeing if it fixes the issue on restart.

I ment >120 Hz monitor, sorry.
 
But it's allready answered.
You can lock the FPS when on desktop to 120 Hz with the Nvidia controll pannel (it get's automatily unlocked to 144 Hz when you start a game).
That's what I do and it works.

You aere wellcome.
Here is more information if you like: http://www.pcper.com/news/Graphics-Cards/Testing-GPU-Power-Draw-Increased-Refresh-Rates-using-ASUS-PG279Q

I was testing my friend's R7 370, and it would also reach ~60 deg. while idling (on open air), all because it has, like your 980Ti, passive mode that turns off fans to reduce noise. As soon as I turned fans on at 25% temp went down to ~40 deg. 

Thank you. I see that when my refresh rate is high my core clock is very high. Thank you guys for help.

So, I did some testing, and it was not only my CPU cooler but also my HDD vibrations and PSU somewhat. My CPU cooler's second fan had stopped working, virtually taking off 50% of the cooling performance. I got that fixed by plugging the fan to SYS_FAN spot and not using Y-model connector to put the 2 cooler fans on the CPU_FAN slot on my motherboard. It was also very dusty, I unscrewed the whole radiator and cleaned it, now I get much better temps and keeping my fans lower rpm.
     My HDD and PSU make more sound than the CPU cooler, surprising. I gotta do some something to eliminate the vibrations from the HDD so that will most likely help. My PSU does make a lot of noise, but luckily I was planning to get higher quality PSU regardless.