Didn't know about any of that but makes sense to me. Plasma days?You know, come to think of it, where something like this might actually be useful, is if they were set up to do what good TV's used to do, update the same frame multiple times at a higher refresh rate.
I don't quite claim to understand why this improves display quality, but reportedly it at least did in the past.
If it supports up to 500hz, you could - for example - run at 120fps, and update the same static frame 4 times at 480hz.
If this still works as it did back in the old HDTV panel days, maybe it would reduce the type of motion blurring my Asus XG438Q is prone to at high refresh.
Didn't know about any of that but makes sense to me. Plasma days?
The only thing I'm familiar with when it comes to "120Hz" or "240Hz" LCD HDTVs is motion interpolation, where HDTVs look at the previous frame, the upcoming frame, and make up a frame in between those. Some HDTVs used a black frame, and some HDTVs used a frame made up of the previous and next frames. Samsung called it AutoMotion. LG called it TruMotion, and I'm sure the other manufacturers had their own names for the tech. It was very handy for 30fps games, but it used to cause hella input lag. I first started seeing motion interpolation in HDTVs around 2007. But the shiznit @Zarathustra is talking about is something I am completely unfamiliar with, and don't recall hearing about before.