Which 4k@60hz usb-c to HDMI adapter to buy?

Discussion in 'MacBook Pro' started by mbenji, Dec 21, 2018.

  1. mbenji macrumors member

    mbenji

    Joined:
    Aug 27, 2016
    #1
    Hi :)

    I already have apple's :apple: USB-C Digital AV Multiport Adapter, but it only supports 4k@30hz -please correct me if I am wrong!

    I am looking for a trustworthy usb-c to HDMI adapter which:

    1. Must support 4k@60hz.
    2. With a long length usb-c cable. (and if not, at least replaceable so I can change it to a longer length).
    3. Include USB port(s)
    4. Optionally include ethernet, I think only the expensive thunderbolt ones will support this, I don't want to shell out $200 for this.

    The best thing I found so far is this one, but it's disadvantages are it doesn't have much reviews, I will have to buy another usb-c cable and I don't know if I can trust it to work and trust it to reliably charge my MBP.

    Is there anything with better reliability, better quality, with longer usb-c cable or with ethernet?

    Thanks! :)
     
  2. MacUser1 macrumors 6502

    MacUser1

    Joined:
    Aug 23, 2001
    Location:
    CT
    #2
    What about this one? It's not exactly what you are looking for, but it seems to be very good value for $99. I'm considering purchasing one for myself.
     
  3. cynics macrumors G4

    Joined:
    Jan 8, 2012
    #3
    What is your plan for it?

    USB-C adaptors are great to have a portable all in one solution however once enough functions are added compromises are made due to bandwidth limitations. Not USB 3.1, 10/100 ethernet only, 4k30hz, not DCI 4k, etc etc....

    If that's your goal then I would try that one out. Return it if it sucks. Thunderbolt 3 dock would be a more permanent solution and leave you with more expandability down the road.
     
  4. Fishrrman macrumors P6

    Fishrrman

    Joined:
    Feb 20, 2009
    #4
    Just some thoughts. I could be wrong.

    I believe you need an HDMI 2.0 (the 2.0 is very important) input on your display in order for this to work. Anything less won't work.

    You'll need a USB-c (mac end) to HDMI 2.0 (display end) adapter.
    But even then, best to read the user reviews to see if there are reports from Mac users who are getting 4k @ 60hz.

    You'll also need a HIGH SPEED HDMI 2.0 compatible connecting cable. (if the USB-c adapter isn't long enough). If the connecting cable is too slow, you may not get 60hz.
     
  5. mbenji thread starter macrumors member

    mbenji

    Joined:
    Aug 27, 2016
    #5
    Thanks :) I don't want all the clutter on the desk, but otherwise it could have been a good solution! and cost effective.

    Thanks, usb-c will be enough for now I don't want something expensive.
    My plan is to connect a monitor, power and usb and leave it somewhere hidden, with only one cable to get everything together.

    Thanks for that, I will double check the monitor is indeed HDMI 2.0



    It seems that finding something like apple's :apple: USB-C Digital AV Multiport Adapter with 4k@60hz is very hard if not impossible, if you know anything below $200 (preferably $100) please let me know.
     
  6. Trey M macrumors 6502a

    Trey M

    Joined:
    Jul 25, 2011
    Location:
    USA
    #7

    My understanding is that there’s literally one adapter from a reputable manufacturer that supports 4K @ 60Hz over HDMI and it’s from Belkin.
    https://www.belkin.com/us/p/P-F2CU038bt/

    You can see how chunky the unit is, and it just came out within the last 60 days. As far as I know, there are no other options available from a reputable manufacturer. The link to the Hyperdrive above will not do what you’re looking for; it will be a standard 4K @ 30Hz HDMI connection. The 60Hz reference is for the USB-C port.

    The easiest way (for most setups) to get 4K @ 60Hz is via DisplayPort. You can get a native cable which is USB-C > DisplayPort (no adapater required). The issue is if you monitor does not support this.

    A Thunderbolt 3 dock is also a solid bet, though I’m unaware if any of them actually support 4K @ 60Hz over HDMI. I use an Elgato Thunderbolt 3 dock and have my 4K display connected via the DisplayPort available on the dock itself.
     
  7. mbenji thread starter macrumors member

    mbenji

    Joined:
    Aug 27, 2016
    #8
    Hi, Thanks!!

    Did you focus on the reputable one because I wrote I am looking for something trustworthy? Thanks :)

    I don't know if Anker is considered reputable but they got this adapter for less than half the price, IMO $50 for this is far and way too much.

    If someone else finds himself in my position:
    1. As was written before, make sure your monitor/cables supports HDMI 2.0 (the cable should be "premium high speed").
    2. HDMI 2.0 will only do 18Gbps - which means 4k@60hz 4:4:4 but up to 8bit. (10 bit is about 20Gbps).
    3. Club 3D has an adapter which can do USB2.0 + 4k@60hz + charging, there might be other similar solutions.

    I hope that helps, I might start a thread with all 4k@60hz HDMI adapters which can also do USB2.0 (and maybe ethernet).
     
  8. cynics macrumors G4

    Joined:
    Jan 8, 2012
    #9
    It should probably be noted that many WCG/HDR/10 bit/whatever displays (TV and/or monitors) need individual HDMI ports set to their 10 bit/UHD/deep color/ultra color/random marketing term to achieve 60hz with a resolution of 4k.

    The reason this needs to be turn on with HDMI is due to a poorly defined standards and out of the box compatibility. What this setting is effectively doing is increasing the "transition minimized differential signaling" clock frequency (often referred to as TMDS clock, character rate and/or pixel clock) from a HDMI 1.3 340 mhz spec to the HDMI 2.0 600 mhz spec.

    In an overly basic explanation, HDMI has a dedicated channel to sync the image and if the receiver (display) is clocked higher than the transmitter (cable box, DVD player, etc) you can get odd graphical effects. Conversely if the receiver is clocked lower than the transmitter (default setting for compatibility) you may lack the required bandwidth for 60hz.

    I pulled this off of Wiki.

    Screen Shot 2019-01-01 at 9.36.58 AM.png

    Screen Shot 2019-01-01 at 10.01.30 AM.png

    Newer displays may handle this better but I have an 2017 Samsung HDR10 TV that needed "UHD Colors" enabled for the HDMI port my MBP is hooked too.
     
  9. SoyCapitanSoyCapitan macrumors 601

    SoyCapitanSoyCapitan

    Joined:
    Jul 4, 2015
    Location:
    Paris
    #10
    Yeah by default most TVs don’t have UHD color enabled per HDMI port.

    If you get a good quality cable and adapter that supports 2.0b then you will have 21Gbps and 10 bit color support.

    macOS default color profile for HDR TVs needs to be calibrated manually. It’s somewhere silly like 8000-9000K. Bring it down to 6000-6500K and it will look closer to MBPs internal screen and iOS devices.
     
  10. Alumm Pro macrumors newbie

    Alumm Pro

    Joined:
    May 20, 2019
    #11
    Alumm Pro supports Gigabit Ethernet, 4K Mini-DP, 4K HDMI, USB3 x 3... =)
     

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10 December 21, 2018