LCD and Viewfinder
Nikon D1X has a Fixed Type 2" LCD screen with a resolution of 130k dots. At only 2", the screen is on the smaller side and 130kdot resolution is lower than most of the recent models in this class.
D1X has a built-in Optical (pentaprism) viewfinder. The viewfinder has a coverage of 96%. 96% coverage means that what you see in your viewfinder while shooting will slightly be different from the actual image.
Max Shutter speed
Nikon D1X can shoot continuously at max speed of 3 fps
and has max shutter speed of 1/16000 sec
Unfortunately D1X doesn't have a built-in flash but it has a flash shoe for mounting external flashes.
Nikon D1X features a Phase Detection autofocusing system.
Unfortunately Nikon D1X doesn't have Video recording ability.
Connectivity and Storage
Nikon D1X Features Compared to Main Competitors