Can I get 144hz with this eGPU, the HDMI port or ever the thunderbolt 3 (with a DVI dongle) can enable it in games ?

Of course depending on the gaming demand, I have an 144hz monitor, and I would love to improve my gaming experience

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  • You did not state the model of your monitor or the resolution you wish to use.

    The eGPU can output HDMI 2.0 from its HDMI 2.0 port. This is a Single Link DVI signal that supports a pixel clock up to 600 MHz. If your monitor requires Dual Link DVI, then you can connect a HDMI 1.4 to DisplayPort adapter and a DisplayPort to Dual Link DVI adapter. Chaining these adapter may cause issues. Dual Link DVI can do a pixel clock up to 330 MHz which is just barely enough for 1920 x 1080 144 Hz (using a timing with smaller blanking periods than CVT-RB or even CVT-RB v2 call for).

    The eGPU can output DisplayPort 1.2 from its second Thunderbolt 3 port (it might even be able to do DisplayPort 1.4 since the eGPU uses the new Titan Ridge Thunderbolt 3 controller but I don't know if macOS supports DisplayPort 1.4). If your monitor requires a Dual Link DVI connection, then you need a USB-C to DisplayPort adapter and a DisplayPort to Dual Link DVI adapter.

    The eGPU can output two DisplayPort 1.2 signals from its second Thunderbolt 3 port if you use a Thunderbolt 3 to Dual DisplayPort adapter instead of just a USB-C to DisplayPort adapter. Currently existing adapters use the older Alpine Ridge Thunderbolt 3 controller and therefore cannot provide DisplayPort 1.4 (if the eGPU supports that and the OS allows it).

    Another way to get two DisplayPort 1.2 signals is to connect a Thunderbolt 3 device that has two Thunderbolt 3 ports and a DisplayPort. Connect one display to the DisplayPort. Connect the other display to the 2nd Thunderbolt 3 port with an appropriate adapter.

    A third way to get two DisplayPort 1.2 signals is to connect two Thunderbolt 3 devices each with a DisplayPort. Connect each monitor to the DisplayPort of each Thunderbolt 3 device.

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