A:Answer 1920x1080 IS 1080p
You can only choose one operating refresh rate at a time (60hz or 144hz etc.).
HDMI maxes out at 60hz
Displayport and DVI-D (DUAL LINK CABLE, not the one that comes in the box) will get you 1080p and higher resolution wise, and 144hz, so those would be your only options for 1080p 144hz