Does cable type affect availability of resolutions in external monitor?

Discussion in 'Mac Basics and Help' started by hajime, Jul 20, 2017.

  1. hajime macrumors 601

    Joined:
    Jul 23, 2007
    #1
    Hello, I know that the resolutions available for external monitors is depending on the specifications of the GPU. However, somewhere on the net I read that using mini display port to hdmi cable could lead to less available resolutions to choose from. Is this correct? Currently I am connecting mini display port to hdmi of a LG 38" monitor. It is supposed to output 2560x1600 according to the specs of my MBP 2010 17". However, the best it can do is 1080p. Before I purchased the monitor, LG recommended using mini display port to display port cable rather than via hdmi.
     
  2. Audit13 macrumors 68020

    Audit13

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    Apr 19, 2017
    Location:
    Toronto, Ontario, Canada
    #2
    The resolutions available are limited by the MBP and/or the monitor.

    Can the LG support 2560x1600 via hdmi?
     
  3. CreatorCode macrumors regular

    CreatorCode

    Joined:
    Apr 15, 2015
    Location:
    US
    #3
    It can. There are different versions of the HDMI spec. I believe you'll need at least HDMI 1.3 to get 2560x1600. Everything -- computer/adapters, cables, and the port on the monitor -- will have to be HDMI 1.3 or later for it to work.
     
  4. Apple fanboy macrumors Penryn

    Apple fanboy

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    Feb 21, 2012
    Location:
    Behind the Lens, UK
    #4
    Does your Mac support a higher resolution?
    https://support.apple.com/kb/sp581?locale=en_GB
    Seems to suggest 1920 is the max.
     
  5. hajime thread starter macrumors 601

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    Jul 23, 2007
    #5
  6. Audit13 macrumors 68020

    Audit13

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    Apr 19, 2017
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    Toronto, Ontario, Canada
    #6
    What is the lg monitor model number? Sounds like it may be a 38" 1080p HDTV.
     
  7. hajime thread starter macrumors 601

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    Jul 23, 2007
    #7
  8. Audit13 macrumors 68020

    Audit13

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    Apr 19, 2017
    Location:
    Toronto, Ontario, Canada
    #8
    Wow, very nice monitor.

    The monitor's native resolution is 3840 x 1600 which is higher than the Macbook's highest output resolution which is 2560x1600.
     
  9. hajime thread starter macrumors 601

    Joined:
    Jul 23, 2007
    #9
    For the 2017 MacBook Pro 15" which I may buy, the native resolution is 2880x1800. Don't know about possible scaling as I drag application windows between the laptop screen and the external monitor.
     
  10. Audit13 macrumors 68020

    Audit13

    Joined:
    Apr 19, 2017
    Location:
    Toronto, Ontario, Canada
    #10
    I don't know much about the LG monitor but I will say that my experience with running any monitor below its maximum resolution results in poor picture and font quality.
     

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