Is the i5 6600k holding back the gtx 980 ti or am I fine?
I'm pretty new to the whole pc things so how should I know ? -.-
You will be fine with a 6600K and GTX980Ti.
Also @Commodore_64 i deleted your comments, since they dont add anything usefull to this thread.
Not everyone is well educated wenn it comes to Hardware, keep that in mind.