2017 MacBook Support 4k@60hz ?

Discussion in 'MacBook' started by Qu1ckset, Jun 23, 2017.

  1. Qu1ckset macrumors regular

    Qu1ckset

    Joined:
    Oct 7, 2013
    Location:
    Toronto, Canada
    #1
    I was reading online the 2016 MacBook only supported 30hz on 4k out of the box and needed to do some work around to get it to run 60hz.

    Is the 2017 MacBook same deal ?

    Anyone know any cons doing the work around forcing 4k@60hz ?
     
  2. EugW macrumors 68000

    EugW

    Joined:
    Jun 18, 2017
    #2
    https://support.apple.com/en-ca/HT206587

    HDMI
    You can use 4K displays and Ultra HD TVs at the following resolutions and refresh rates via the built-in HDMI port of your Mac:

    • 3840x2160 at 30Hz refresh rate
    • 4096x2160 at 24Hz refresh rate (mirroring is not supported at this resolution)
    With macOS 10.12 or later, MacBook (2015 and later) and MacBook Pro (2016 and later) support these resolutions and refresh rates over HDMI 1.4b using the USB-C Digital AV Multiport Adapter:

    • 4096x2304 at 48Hz refresh rate
    • 3840x2160 at 60Hz refresh rate (mirroring is not supported at this resolution)
    MacBook (2016 and later) and MacBook Pro (2016 and later) support 60Hz refresh rates over HDMI when used with a supported HDMI 2.0 display, an HDMI Premium Certified cable, and a supported USB-C to HDMI 2.0 adapter.

    Single-Stream Transport (SST) displays
    Most SST 4K displays are supported at 30Hz operation.

    With OS X Yosemite 10.10.3 and later, most SST 4K (3840x2160) displays are supported at 60Hz operation on the following Mac computers:

    • MacBook Pro (Retina, 13-inch, Early 2015) and later
    • MacBook Pro (Retina, 15-inch, Mid 2014) and later
    • Mac Pro (Late 2013)
    • iMac (27-inch, Late 2013) and later
    • MacBook Air (Early 2015)
    With OS X Yosemite 10.10.3 and later, most SST 4K (4096x2160) displays are supported at 60Hz operation on the following Mac computers:

    • MacBook Pro (2016 and later)
    • Mac Pro (Late 2013)
    • iMac (Retina 5K, 27-inch, Late 2014) and later
    With macOS Sierra, MacBook (2015 and later) supports 4K (3840x2160) displays at 60Hz operation over DisplayPort.
     
  3. Qu1ckset thread starter macrumors regular

    Qu1ckset

    Joined:
    Oct 7, 2013
    Location:
    Toronto, Canada
    #3
    so the MacBook can only run LG Ultrafine's 4k (4096x2160) @ 48Hz over usb-c natively if I'm reading this correctly ?
     
  4. Brookzy macrumors 601

    Brookzy

    Joined:
    May 30, 2010
    Location:
    UK
    #4
    The 2015 MacBook can run the LG 4K at full 4096x2304 resolution at 48Hz.

    The 2016 and 2017 MacBooks can run the LG 4K at full 4096x2304 resolution at 60Hz providing it is running macOS Sierra.

    No hacks required.
     
  5. vader1990 macrumors regular

    Joined:
    Sep 23, 2008
    #5
    I have the Dell UP3216Q and I can't get 60Hz for 1440p scaled resolution (or any res for that matter) using a HDMI 2.0 cable, that setting checked in the monitor, and the Apple multi port adapter. I have the rMB 17.

    Help? Thanks.
     
  6. tley macrumors newbie

    Joined:
    Jun 26, 2017
    #6
    Apple Multiport only supports HDMI 1.4b. You need HDMI 2.0 to support 60 hz 4K
     
  7. beatlebum macrumors newbie

    beatlebum

    Joined:
    Jun 25, 2010
    Location:
    KY
    #7
    ^This
     
  8. matt2053 macrumors 6502a

    Joined:
    Jul 8, 2012
    #8
    Is there an alternate product that supports Mini DisplayPort out or HDMI 2.0 out, so that you can do 4K @ 60Hz while charging?
     
  9. Elwe macrumors member

    Joined:
    Dec 30, 2006
    #9
    Currently, no. And it is not clear (to me at least) if the issue is only with current solutions, or if the issue is fundamentally one of bandwidth. What dock maker is going to invest in a USB 3.0/1 Gen 1 dock that only has Display port 1.3 or HDMI 2.0 and a single USB 3.0/1 Gen 1 port? That has to be a really small market. So maybe only if someone created an adapter . . . similar to one that Dell made.

    Who knows what Apple will do, but I do not see them making the half-step to Gen 2 instead of just moving to TB3 when Intel does (on CPU). Not in this chassis, not when they have another SKU they can sell you.
     
  10. jeff-4 macrumors newbie

    Joined:
    Mar 30, 2016
    #10
    The CalDigit USB-C dock will support 4K at 60Hz, but it needs a firmware update and doing so deprecates the USB 3 ports to USB 2 speeds, due to the bandwidth limitations discussed above. It will also charge your MacBook.
     
  11. Bankerts macrumors member

    Joined:
    Sep 8, 2008
    #11
    Can you confirm that this dock works with the 2017 MacBook 10,1? I bought one and RMA'd it because I wasn't getting a video output from the HDMI port on the dock. The replacement came and I have the same problem.
     

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