15" MacBook Pro

Discussion in 'MacBook Pro' started by daven85, Jan 10, 2016.

  1. daven85 macrumors member

    Mar 29, 2011

    I recently got a 15" Mid-2015 MBPr with the AMD Radeon R9 2GB. I was hoping to run three external screens, do any of you know if this is possible?

    I currently have the following screens on my desk.

    1x 24" Dell via Thunderbolt to HDMI to DVI Adapter.
    1x 22" ASUS Thunderbolt to HDMI
    1x 22" ASUS (currently on a a Mac Mini). Was hoping to go HDMI to HDMI... though when I try I can never get all three monitors working at once.

  2. Samuelsan2001 macrumors 604

    Oct 24, 2013
    Well I would think this from the tech specs on apples page for that machine should answer your question.

    Dual display and video mirroring: Simultaneously supports full native resolution on the built-in display and up to 3840 by 2160 pixels on up to two external displays, both at millions of colors.

    So officially it will support 2 extra displays up to 4K resolution.

    I am sure there are ways round this but nothing official from apple.
  3. Neodym, Jan 11, 2016
    Last edited: Jan 11, 2016

    Neodym macrumors 68000


    Jul 5, 2002
    It was possible already with the original 2012 rMBP: http://www.theverge.com/2012/6/20/3104640/macbook-pro-retina-display-three-external-monitors

    So a 2015 rMBP should be able to do this just as easily ...

    I suspect that your adapter combination is the problem here (both going from Thunderbolt-to-HDMI, so maybe the HDMI logic on board is busy when you try to use HDMI natively in parallel). Can you borrow two Thunderbolt-to-DVI adapters somewhere for testing purposes?
  4. daven85 thread starter macrumors member

    Mar 29, 2011
    Thanks for the advise... I will try that soon.

    I have gotten it working using a USB to DVI DisplayLink I had. While I know I am wasting my HDMI port by not using it though I do love the look of just some white cables coming out of the side... keeps it clean.

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