2011 iMac 4k?

Discussion in 'iMac' started by Nyy8, May 19, 2014.

  1. Nyy8 macrumors 6502a

    Nyy8

    Joined:
    Jun 12, 2011
    Location:
    New England
    #1
    I'm hearing Apple slowly rolling out 4k over the last few months, I think starting in 2013 with 10.8.3 or something.

    Anyways, could my 2011 iMac at this point run a 4k monitor and what limitations would I have? what is holding it back? Hardware or Software?

    Thanks guys.
     
  2. rkaufmann87 macrumors 68000

    rkaufmann87

    Joined:
    Dec 17, 2009
    Location:
    Folsom, CA
    #2
    It will support some 4K displays if you update to Mavericks 10.9.3. Here is one article that explains more about it:

    http://support.apple.com/kb/HT6008
     
  3. yjchua95 macrumors 604

    Joined:
    Apr 23, 2011
    Location:
    GVA, KUL, MEL (current), ZQN
    #3
    4K only works on late-2013 rMBPs and nMPs, both with TB2. TB1 doesn't have enough bandwidth to drive a 4K display at 60 Hz.
     
  4. omvs macrumors 6502

    Joined:
    May 15, 2011
    #4
    You can easily do 3840x2160 at 30Hz - I'm doing it on both a 2011 iMac and a 2012 rMBP. For the iMac, you need an dp->HDMI adapter - passive might work, but I use a active adapter. I'm also using SwitchResX, though not sure if its required or not.


    60Hz is trickier - it doesn't appear you can get displayport 1.2 signals out of a TB1 port, so I don't think there's a single-cable solution that will work.

    I believe some displays support using 2 cables to drive at 1920x2160, so you could use both thunderbolt ports w/ TB->HDMI 1.4 adapters or hook displayport into both ports. However, I don't have such a display, and can't verify. You'd also need to make sure you had both thunderbolt ports open -- if you have a TB device that doesn't allow chaining, you lose a port. :(
     

Share This Page