Thunderbolt to HDMI 2.0 Adapter

Discussion in 'Mac Accessories' started by TWB, Dec 4, 2015.

  1. TWB macrumors newbie

    Sep 9, 2015
    I've been looking for a way to drive a 40" 4k TV (e.g. Samsung JU7500) as an external monitor for a 2014 rMBP. I know that I can use the included HDMI connector to get 4k @ 30Hz and 4:4:4. But I'd like to drive it at 60Hz. I've seen claims that the signal on the Thunderbolt port can provide 60Hz, but that would limit me to 4K TVs that have DisplayPort inputs, unless I can find a Thunderbolt to HDMI 2.0 adapter. Has anyone seen such a thing?
  2. edanuff macrumors 6502

    Oct 30, 2008
  3. ColdCase macrumors 68030

    Feb 10, 2008
    Most TB docks have HDMI out, but I believe the rate is driven by the Mac's video card capability, not the interface.
  4. TWB thread starter macrumors newbie

    Sep 9, 2015
    Thanks for the replies.

    Unfortunately, it looks like the Accell Mini DisplayPort 1.2 to HDMI 2.0 Active Adapter is vaporware.

    There are certainly a lot of Mini DisplayPort to HDMI 1.4 adapters out there, most of which obfuscate their capabilities by calling the output "4K HDMI", which isn't even a spec, but means 4K at 30 Hz. Apple itself is guilty of the "4K HDMI" obfuscation.

    As for the Thunderbolt docks, it's the same story. HDMI specs for some TB docks:
    OWC Thunderbolt2 Dock (HDMI 1.4b)
    Elgato Thunderbolt 2 Dock (HDMI 1.4b)
    Kanex Thunderbolt 2 Express Dock (HDMI 1.4b)

    Belkin Thunderbolt 2 Express HD Dock (no spec for HDMI port)
    StarTech Thunderbolt 2 4K Dock (no spec for HDMI port)
    IOGear Thunderbolt 2 Dock (no spec for HDMI port)

    Sonnet Echo 15+ Thunderbolt 2 Dock (no HDMI port)
    AKiTiO Thunder2 Dock (no HDMI port)
    What am I missing here - am I the only guy who wants to use a 4K TV as a monitor?

  5. MCAsan macrumors 601


    Jul 9, 2012
    I guess so. I use a Dell 4K monitor as a monitor. No TV I know about does AdobeRGB colorspace. For me work and play requirements on a screen are very different.
  6. mikeboss macrumors 65816


    Aug 13, 2009

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