4K Apple TV with a 4K monitor

Discussion in 'Apple TV and Home Theater' started by xWhiplash, Sep 20, 2017.

  1. xWhiplash macrumors 68000

    Oct 21, 2009

    Since we can’t get 4K content on our Macs, does anyone know if the 4K Apple TV will work with a 4K monitor?
  2. vipergts2207 macrumors 68020


    Apr 7, 2009
    Columbus, OH
    It should. There's not much separating a TV and a monitor in the first place.
  3. xWhiplash thread starter macrumors 68000

    Oct 21, 2009
    What 4K monitors have HDR that the 4K Apple TV uses? There is a Dell 4K but it uses Dell HDR whatever that means.
  4. benji888 macrumors 68000


    Sep 27, 2006
    United States
    Do you already have a 4K monitor, is that why you ask? Short answer, probably not.

    Just like when you buy a 4K UHD TV, if it doesn't say in the specs that it supports HDR10 & Dolby Vision HDR, then it does not. Most 4K UHD TVs made before 2016 will not have HDR at all, and only some currently support both.

    The retina iMacs do not appear to support HDR, only 500 nits, not enough brightness to do HDR. The LG 4K & 5K monitors apple sells are using the exact same LG panels found in the iMacs, so, no go there either.

    To utilize 4K HDR content, the ATV 4K must be connected to a compatible UHD TV and you have to use a HDMI 2 cable. Any old HDMI cable lying around won't work. (I think most UHD TVs come with HDMI 2 cable, but, not sure.)

    Lastly, I'm not sure if any monitor out there supports HDCP 2.2, which is the copyright protection for 4K content, this requires using one HDMI 2 cable, which, most 4K monitors use two HDMI 1.4 cables, or two DisplayPort cables to connect to computers, to utilize 4K, as, most computers don't have HDMI 2 output, the only other way is one cable via TB3, which, as far as I know, only the LG monitors already mentioned above use that connection, and, it is unknown, at this time, if these will work via any Mac. That being said, if it has an HDMI 2 input, one could try that with the new ATV 4K.

    see: Find and watch movies with 4K, HDR, or Dolby Vision https://support.apple.com/en-us/HT207949
    "Only the Apple TV 4K, connected to a 4K-compatible television with a compatible ultra-high speed HDMI cable, can play 4K content."

    I'm sure, once ATV 4K units are delivered, we will find out more when people try various ways to use it.
  5. xWhiplash thread starter macrumors 68000

    Oct 21, 2009
  6. cube macrumors P6

    May 10, 2004
    I use a curved 48" 3D 4K HDR quantum dot TV as my monitor.

    What you can miss:

    - DisplayPort
    - FreeSync/G-Sync
    - High refresh rate
    - Less annoyance
    - A bit too big, at least for Mac
    - Retina
  7. xWhiplash thread starter macrumors 68000

    Oct 21, 2009
    48" is too big for me. And there are no TV's smaller than 40". That is why that Dell 27" monitor looked good to me.
  8. HiRez macrumors 603


    Jan 6, 2004
    Western US
    There's a difference between working and fully supporting. Will it show 4K resolution? Probably. Will it support that at various frame rates? Maybe, maybe not. Will it show DolbyVision HDR (assuming the content has it)? I doubt it. Maybe HDR10 if you're lucky, but possibly no HDR at all.
  9. Cryates macrumors 68020


    Nov 19, 2013
    Chattanooga, TN
  10. xWhiplash thread starter macrumors 68000

    Oct 21, 2009
    That link I posted shows that it does have Dell HDR. I have no idea what "Dell" HDR means regarding HDR content.
  11. Lichqueen, Sep 21, 2017
    Last edited: Sep 21, 2017

    Lichqueen macrumors member

    Apr 24, 2008
    Hong Kong
    I am using LG 31MU97 4k mon, but HDMI only 30hz, so can watch 4k contents with Apple TV 4K?

    One more question, if I use HDMI <-> MDP adapter between my Apple TV 4K and LG mon, can 4k 60hz?
  12. benji888, Sep 22, 2017
    Last edited: Sep 22, 2017

    benji888 macrumors 68000


    Sep 27, 2006
    United States
    “iDell’s HDR feature has been designed with a PC user in mind and supports specifications that are different from existing TV standards for HDR. Please review the specs carefully for further details.”

    This is just a way to give the monitor slightly better color/dynamic range, it does not have the specs for true HDR10, it’s not bright enough, and only does 80% of the P3 color gamut, ...Dell HDR, think of it as an “emulator”, but not compatible. It may not even have the HDCP 2.2 for connecting to the ATV 4K, meaning, you may be able to play your own content, but it might not play protected streams, unless using it with a windows PC. ...the LG panels in apples iMacs have better specs, but still not enough for HDR10.

    See “About 4K, HDR, and Dolby Vision on your Apple TV 4K” https://support.apple.com/en-us/HT208074
    --- Post Merged, Sep 22, 2017 ---
    It appears to have what you need to connect to ATV 4K, but does not support HDR. That said, UHD content does have better color, even without HDR, as this monitor has P3 color, you may (or may not) notice a difference.

    According to the specs, it will connect at 30hz to ATV 4K via HDMI. Using an adapter as you describe will not give you 60hz w/ATV 4K. ...the ATV 4K will work at 60 or 30hz.
  13. cube macrumors P6

    May 10, 2004
    That's the smallest 4KTV I could find that was both curved and 3D.

    You might still find 40" or 43" if you only pick one of those two.

    There are 4K monitors, even big ones, but they are not 3D. They are not expensive in general.

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12 September 20, 2017