That's just some arbitrary number. :) Unless refresh is clearly defined, there's not much point throwing around arbitrary numbers.
450ms may be minimal time for a screen clear + update, just by the looks of it. That is the screen blinking black/white to clear the screen and then painting the final image. That's not something that will be happening all the time...
450ms may be minimal time for a screen clear + update, just by the looks of it. That is the screen blinking black/white to clear the screen and then painting the final image. That's not something that will be happening all the time...