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
- Asked by Alexandre M from Recife
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1 Answer from the Community
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.
- Answered by Joseph V from Fort Langley