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  1. #1


    Member Since
    Sep 17, 2007
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    California
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    Maximum external resolution for MC508LL?
    What's the maximum external resolution for my iMac MC508LL?

    It comes with an ATI Radeon HD 4670 which supports 2560x1600 but that's for the main display... What about a display connected through the mini-display port?

  2. #2

    chscag's Avatar
    Member Since
    Jan 23, 2008
    Location
    Fort Worth, Texas
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    48,028
    Specs:
    Late 2013 27" iMac, iPad 3, iPhone 6s+, iPhone 6+, 3 iPods, El Capitan
    Your machine's internal display is set at 2560 x 1440 as its native resolution. It supports up to 2560 x 1600 external through the mini display port. (If you gave us the correct model number.)

  3. #3


    Member Since
    Sep 17, 2007
    Location
    California
    Posts
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    I have it connected through the mini display port but display options only shows 1280 x 800 as the maximum resolution for the external monitor. How can I fix this?

  4. #4


    Member Since
    Jan 22, 2010
    Location
    Victoria, BC
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    20,911
    Specs:
    Mid-2012 MBP (16GB, 1TB HD), Monoprice 24-inch second monitor, iPhone 5s 32GB, iPad Air 2 64GB
    What is the maximum resolution of "it" (which I assume is the name you gave the monitor you connected)?

  5. #5


    Member Since
    Sep 17, 2007
    Location
    California
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    The maximum resolution is 2560 x 1600 and it requires a dual-dvi cable to work which is why I am guessing the mini display port is failing to give me the correct resolution.

    The monitor is a 30" Dell 3007WFP

  6. #6

    chscag's Avatar
    Member Since
    Jan 23, 2008
    Location
    Fort Worth, Texas
    Posts
    48,028
    Specs:
    Late 2013 27" iMac, iPad 3, iPhone 6s+, iPhone 6+, 3 iPods, El Capitan
    Are you using a dual-dvi cable? If you are and it's still showing only 1280 x 800, make sure you're scrolling all the way through the resolution box. Sometimes you have to scroll up to see all the available resolutions. Otherwise, try another adapter.

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