HDMI or DisplayPort: which cable should I use?
Start with the sockets and the monitor’s input-specific limit, then check the cable marking.
Dell G2724D: why HDMI gives 144Hz and DP can give 165Hz
A worked example using our checked MSI RTX 2070 GAMING Z 8G profile.
My monitor supports a higher Hz, but Windows does not show it
Check the setting, the connection and the exact model in that order.