After unveiling their 2016 XBR-XD series 4K HDR LCD TVs in early to mid-2016 with the priciest X940D model as the flagship of these excellent televisions for what many thought would be the rest of the year, Sony surprised many tech watchers and consumers with a second release of two new and amazingly powerful “real” flagship 4K HDR TVs in the form of the Z9D models.Now that these two televisions are here and on sale, they without a doubt represent the absolute best of what Sony has to offer so far.It doesn't have much to do with the refresh rate of the TVs and refers to their backlight scanning feature (see image flicker and BFI).The number is almost entirely arbitrary and doesn't mean much. Unlike most other manufacturers, there isn't an easy division you can do, but generally, 240 means 60hz, and anything above that means 120hz.Every TV manufacturer uses made-up numbers to exaggerate the refresh rates of their TVs (learn more about refresh rate), but it isn't quite as nonsensical in 2017 compared to what it used to be.
Vizio, however, also uses a confusing number called "Clear Action".
The following tables convert fake refresh rates into their real refresh rates.
In order: 2017 TVs (North America), 2016 TVs (North America), 2015 TVs (North America), 2014 TVs (North America), and 2014 TVs (International).
Fake refresh rates are typically higher than the real refresh rate of the TV, so using them allows manufacturers to market their TVs as being ‘better’ than they are.
Since these fake refresh numbers are invented by each company, they are also all different from each other, which makes direct comparison across brands impossible for those who don’t know the conversion to real refresh rates (which generally are not listed).