Should I use HDMI or DP for 144Hz monitor?
For 144Hz at 1440p, you will need at least HDMI 2.0 or DisplayPort 1.2 while for 4K 144Hz you are going to need HDMI 2.1 or alternatively, DisplayPort 1.4 with DSC 1.2.
Is it better to use HDMI or DisplayPort for gaming?
For gaming desktop PCs, DisplayPort remains the preferred choice. While HDMI 2.1 can be used if you have a compatible monitor or TV, it should be noted that using it for multiple monitors will reduce the available bandwidth for each display. In all other scenarios, DisplayPort 1.4 is still the superior option.
Is DisplayPort good for 144Hz?
The simple answer is yes, and at multiple resolutions. Even DisplayPort 1.0 and 1.1 were capable of supporting 144Hz at 1080p resolution when using the first-generation high bit rate (HBR) mode. Later DisplayPort connections are even more versatile.
Is DisplayPort better than HDMI Hz?
DisplayPort can support higher refresh rates than HDMI (at least until HDMI 2.1 becomes more predominant). Let's say you're using a 4K/120 Hz display on HDMI 2.0, this will only allow you to use half the refresh rate, while with DisplayPort 1.3, you'd get to experience the maximum rate.