15'' rMBP (Late 2014) not outputting to 4K

Discussion in 'MacBook Pro' started by evrard, Feb 21, 2015.

  1. evrard macrumors regular

    evrard

    Joined:
    Oct 20, 2014
    Location:
    Brooklyn
    #1
    Per suggestions of this forum I decided to get the 15'' rMBP.

    However, for some odd reason it will not output in anything higher than 1080P via Thunderport. If I connect via HDMI it reaches 30 Hz 4K. I have an Thunderport to HDMI converter which then goes HDMI to my TV, which supports 4K and 60 Hz. My television is the LG 40UB8000. Any help would be appreciated.
     
  2. radioking, Feb 21, 2015
    Last edited: Feb 21, 2015
  3. Freyqq macrumors 68040

    Joined:
    Dec 13, 2004
    #3
    Do the thunderbolt to hdmi converter and cable support 4k at 60hz?
     
  4. evrard thread starter macrumors regular

    evrard

    Joined:
    Oct 20, 2014
    Location:
    Brooklyn
    #4
    Nope all 3 do, and I have tried using each HDMI port.

    ----------

    You don't need a converter that supports this, they all do - I believe.
     
  5. Freyqq macrumors 68040

    Joined:
    Dec 13, 2004
    #5
    Not the case. There are many versions of HDMI, and only version 2.0 can do 4k at 60hz. http://en.wikipedia.org/wiki/HDMI#Version_comparison
     

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