most people don't know what ghosting is so i need this question limited to people who fully understand how 120hz LCD monitors can remove ghosting, and that lower milliseconds doesn't remove ghosting on LCD's because they are sample-and-hold displays and how that works on human's eyes. so anyway, my question is this. if i buy a 120hz 3d monitor, the kind that takes 120hz input and not just give 120hz output, do i need my games to run at over 60fps to get the blur-free gaming experience, or does the ghosting go away even at around 60 fps? i ask because i was thinking about buying a non-3d TV to do my gaming on, the kind that have 120hz output but don't take 120hz input. i guess i am wondering if a new frame must be sent to the monitor more than 60 times per second for the ghosting to be gone, if that is the case then i need 120hz input capable monitors, as well as my games to run at more than 60fps.
if i didn't explaing myself well, basically, what are the requirements to get the blur-free experience on a 120hz monitor, whether it is just 120hz output only or 120hz input and output?