Displayport 1.4 vs 1.2 (60 and 30Hz)

Zedshi

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Oct 18, 2016
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Hello. I just got my third monitor, and need to get an adapter from hdmi/DVI to displayport. I searched around and found out there's a display port 1.2 and 1.4.
I have a gigabyte gtx 1070 card, and under specification it says:
Display Port-1.4 *3 (Max Resolution: 7680x4320 @60 Hz
Does this mean I have to get a 60 Hz and 7680x4320, or can i get a 30 Hz one? Also does it have to be 1.4?
Third monitor is a GL2250

I wil most likely not use this monitor for gaming, but maybe for youtube, facebook, news, schoolwork(notepads. Help? 😀

On another note: Is it better to game on displayport than dvi or hdmi? (Even with a adapter, aka originally a hdmi/dvi cable)
 
MERGED QUESTION
Question from Zedshi : "DisplayPort 1.2 vs displayport 1.4 (30 and 60 Hz)"