Difference Between HDMI and DisplayPort
1. Speed & Bandwidth
HDMI 2.0 supports a maximum bandwidth of 18 Gbps, which is enough to handle 4K resolution at up to 60Hz, or 1080p at up to 240Hz. On the other hand, DisplayPort 1.4 has a maximum bandwidth of 32.4Gbps, which opens up much greater resolution and frame rate potential. It supports 4K resolution at up to 120Hz without compression, and 8K resolution at 30Hz – something HDMI 2.0 can't even manage.