well are you driving this with a computer or with a HD television tuner? it depends on what you are doing with it.
Yes, it depends on what you're driving it with UP TO THE LIMIT ON THE screen. So, if you were driving that 1920 x 1080 LCD with a videocard that can only display up to 1280 x 720, then the limitation would be the videocard; however, even a videocard capable of driving 3840 x 2160 wouldn't up the resolution because the screen can't physically display more pixels than 1920*1024. What does this mean? It's useful for showing one or two charts to everyone in the office with good detail, but not for trading with, unless you like trading on a couch 10 feet away from a screen with a wireless keyboard/mouse.