Technology
Samsung’s 120Hz mobile displays use variable refresh rates to save power – Engadget
Samsung’s new Galaxy Note 20 Ultra 5G is the first one with its variable refresh rate display that can slow things down from 120Hz to 10Hz and use less energy.

This new screen, debuting first on the Galaxy Note20 Ultra 5G, can hit 120Hz when high rates are needed for gaming, drop to 60Hz for video playback, 30Hz when you’re messaging or as low as 10Hz when it’s displaying a still image.
At the slowest setting, Samsung claims it can use just 60 percent of the normally-required power, while other displays can’t adjust without starting to flicker. Samsung Display mobile display planning VP Ho-Jung Lee said in a statement “Our Adaptive Frequency display …
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