hmmmm, 4K@30Hz

Discussion in 'MacBook' started by Upinel, May 6, 2015.

  1. Upinel, May 6, 2015
    Last edited: May 6, 2015

    Upinel macrumors newbie

    Apr 28, 2015
    Apple had update its description about the external Monitor support
    it shows that Macbook only can output 4K @30Hz.

    hmmmm, btw, still waiting for my Gold 1.3/512 expected. at 15/May

    p.s. the HDMI adopter is running on HDMI 1.4b, anyone know will it works on 3440x1440@60Hz UQHD?
  2. JTToft macrumors 68040

    Apr 27, 2010
    Aarhus, Denmark
    - Well, if it works with 3840x2160, it certainly should with lower resolutions.
    Although this post suggest HDMI 1.4 won't do the full 60Hz at that resolution.
  3. StevenB7 macrumors newbie

    Sep 23, 2012
    Has anyone been able to get UHD (3840x2160) at 60Hz using the Google's $39.99 USB Type-C to DisplayPort Cable?
  4. mikeray macrumors regular

    Jan 17, 2006
    Brooklyn, NY
    What is the highest resolution the new MacBook can output to at 60Hz?
  5. JTToft macrumors 68040

    Apr 27, 2010
    Aarhus, Denmark
    - I'm sure the cable itself could, but the MacBook can't. It'll only do 30Hz.
  6. junkw macrumors regular

    Jun 25, 2010
  7. leman macrumors G3

    Oct 14, 2008
    Its because Apple does not offer a USB-C to mini-DP adapter. I am quite sure that the MB supports 4K@60fps output internally. The CPU itself supports it and the USB-C connector supports it. But maybe Apple wired it up in a weird way inside, who knows. I guess we will only know more when someone tries out a mini-DP adapter.
  8. mattopotamus macrumors G5


    Jun 12, 2012
    They will probably come out with a new "thunderbolt" display, but it will be USB-C. They are having such trouble keeping the AV multiport adapters in stock, and they probably did not realize how many people actually dock their macs.
  9. JTToft macrumors 68040

    Apr 27, 2010
    Aarhus, Denmark
    - Ars Technica confirmed it'll only do 30Hz using Google's DP cable (which in itself does support 60Hz as it's DP 1.2), and Apple's specifications list 30Hz max as well.
    The Intel GPU does support 60Hz, but Intel themselves recommend active cooling for that, which the rMB does not have.

    I just won't do more than 30Hz.
  10. Samuelsan2001 macrumors 604

    Oct 24, 2013
    It's Amazing...

    .. that an uncooled laptop that is that thin and light does it at all to be honest. It wasn't that long ago that any laptop would struggle to output to a 1440 monitor.

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