Unless you're on the absolute newest stuff with DisplayPort 2.1, HDMI 2.1 has more bandwidth than DP1.4. That'll be Nvidias 2000 through 4000 series. No DisplayPort 2.1 until the RTX 5000s.

And then monitors released during this time generally do the same too.

Also if you want to use it through a capture card, HDMI ones are way more common and cheaper