MBP (2015) supports 4k monitor in yosemite but not in bootcamp Win 8.1

Discussion in 'MacBook Pro' started by Akbermo, Jun 6, 2015.

  1. Akbermo macrumors newbie

    Jun 6, 2015
    I've got a dell p2715q 4k monitor that I connect to MBP (mdp to dp). It works at 4k in Yosemite @ 60Hz, but maxes out at 1440 in bootcamp windows 8.1. I can use a hdmi on windows at 4k 30Hz but I can't get the display port 4k 60hz to work on windows. Any ideas?

    I have updated iris drivers .
  2. tezagt macrumors newbie

    Jul 3, 2015
    Did you ever find a fix to this? I have the same issue.

    Using a P2715Q, a 2015 13" rMBP, mDP to DP cable, and I can't get Windows 8.1 in Bootcamp to work 3840x2160 @ 60 Hz, it only allows 29 Hz or 30 Hz. Booting into OS X gives me 3840x2160 @ 60 Hz just fine.

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