How to display a DCI 4K resolution on a Mac Pro (Late 2013)

1. Outline

This information explains how to display a DCI 4K (4096 x 2160) resolution on Mac Pro (Late 2013, OS X Yosemite [10.10.2]) on the ColorEdge CG318-4K. The following operation is not necessary with the OS X Yosemite (10.10.3) environment. DCI 4K (4096 x 2160) resolution is selectable with the default setting.

This information is provided based on our in-house testing and we do not guarantee compatibility in respective user environments. (As of April 2015)

2. Products

Monitor: ColorEdge CG318-4K
Mac: Mac Pro (Late 2013, OS X Yosemite [10.10.2] )

3. Settings

3.1 Monitor settings

(1) Press POWER switch on the bottom bezel to turn off the monitor.

(2) While pressing the leftmost switch, press the POWER switch for more than 2 seconds to turn on the monitor.

(3) [Administrator Settings] menu appears, choose [Signal Format] and press the ENTER switch.

(4) Select the DisplayPort connected to the Mac Pro and change the item to [Extra].


(5) Return to the top menu, select [Apply], and press the ENTER switch. The [Administrator settings] menu closes and the settings are applied.

3.2 Mac OS settings

(1) Open [Displays] on [System Preferences].

(2) Select the [Display] tab, and click the [Scaled] option while pressing the [option] key.

(3) The resolution options appear, then elect the [4096 x 2160] resolution.


(4) Change the [Refresh Rate] setting as needed.

4. Precautions

- Maximum refresh rate is 58 Hz at this setting.
- As the scaling level is fixed to 100%, text or icon size remains small.