rMB and 4K (Dell P2715Q)

Discussion in 'MacBook' started by ChaosAngel, Jul 2, 2015.

  1. ChaosAngel, Jul 2, 2015
    Last edited: Jul 2, 2015

    ChaosAngel macrumors member

    Sep 29, 2005
    Hi all,

    I currently have a 2015 rMBP connected to a Dell P2715Q via mDP. Everything works great and I get the standard retina scaling options at 60Hz.

    I plan on buying my wife a rMB to replace her old MBA. What sort of experience will she get when connected to this monitor?

    I'm guessing the standard Apple HDMI lead will immediately drop her to 30Hz, but will she still get the full range of retina scaling options?

    Assuming there is a third-party USB-C to mDP cable available. Would this allow the rMB to drive full 60Hz.


  2. zhenya macrumors 603


    Jan 6, 2005
    HDMI is limited to 3840x2160 at 30hz.

    AFAIK, the displayport output on the Macbook is limited to 2,560 x 1,440 at 60Hz.

    Can't say whether you will get the retina scaling options - seems like a lot to ask from the GPU. I think the only success stories I've read have been people using it at 1920x1080 which requires no graphics conversions.

    I have the same monitor, and the Macbook, but as I don't really expect to connect the two, I haven't shelled out for the adapter. Kind of waiting for another hub that will be more useful to me.

Share This Page