This kinds blew my mind a few months back. I do a lot of 4K editing and grading to get it down to HD so when I read this post about YouTube streaming 4K 60fps it definitely got my attention. Not sure I can even stream this data.
http://www.digitaltrends.com/computing/youtube-60fps-4k-streaming/
http://www.digitaltrends.com/computing/youtube-60fps-4k-streaming/