There are tomes on the web about 30 or 60Hz from video cards. Here's a taste.
https://www.google.com/#q=4k+video+card+30hz+hdmi
http://www.gamespot.com/articles/amds-r9-295x2-makes-smooth-4k-gaming-a-reality-but/1100-6422139/
I could be wrong but those cards need to be connected with displayport to get to 60. If the 4K TV has such.
Bob
I have a Samsung hu8550 and a R9 295x2 and the max resolution I see is in desktop is only 1920x1080 is there a way to get 3840 x 2160 like your suppose to?

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