Is 3440x1440 at 60Hz possible for MacBook (2015)?

Discussion in 'MacBook' started by Choongsation, May 26, 2015.

  1. Choongsation macrumors newbie

    Sep 10, 2014
    Hi All,

    I was wondering will the new MacBook (2015) support Samsung 34" Series 7 Ultra WQHD LED LCD Curved Monitor at 3440x1440?

    On Apple's Support Website it states MacBook (2015)'s supported scaled resolutions:
    1440 by 900
    1280 by 800
    1024 by 640
    3840x2160 at 30 Hz refresh rate

  2. JTToft macrumors 68040

    Apr 27, 2010
    Aarhus, Denmark
    As I've stated elsewhere on this forum, yes, I believe it is - but only via DisplayPort*. And currently no adapters exist that will let you use DP and power your machine at the same time.
    With Apple's HDMI adapter you'll be limited to 50 or 52Hz because of bandwidth limitations on the HDMI 1.4 standard it uses.

    * Mind you, this is best guesses. I haven't seen anyone attempt it.
  3. tdx macrumors member

    Oct 17, 2008
    I'll have to do more testing before I can 100% confirm this but on my Dell U3415W which has an HDMI 2.0 connection (most 3440x1440 don't, they have HDMI 1.4 ports), the rMB shows up as 60hz. So maybe the macbook itself can do it, but the monitor needs to be HDMI 2.0...
  4. max90034 macrumors newbie

    Oct 24, 2010
    It works for me with similar LG monitor at 3440x1440@60 using google display port adapter
  5. neutron1988 macrumors newbie


    Aug 14, 2015
    Hi tdx, did you use rMB to drive U3415W up to 60Hz on the native 3440*1440 resolution? I've got a U3415W, but only works at 30Hz on 3440*1440 resolution.
  6. Rangomango macrumors member

    Jun 25, 2012
    Didn't want to start a new thread, but were you able to drive the monitor at 60hz? Or is it limited to 30hz over hdmi?

    Edit: I see in your other thread el capitan fixed it?
  7. sakabaro macrumors regular

    Feb 24, 2015
    Got a U3415W and it's running 3440*1440 @ 60Hz via regular hdmi on my rMB.

    Cable matters though, had to use the one furnished with my apple tv, the cheap hdmi cable I was trying first was working fine @ 1080p but got issue for higher resolution, like weird pixel lines.
  8. Rangomango macrumors member

    Jun 25, 2012
    Thank you, very helpful!

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