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Pocok5 t1_j6mjprs wrote

  1. Lower power consumption from the CPU and GPU as they don't need to prepare and render that many frames

  2. Lower power consumption from the LCD panel - it takes power to flip the little crystals from transparent to opaque, and generally the faster you want something to work, the more power you need to pump in it, though I think that last part is only relevant if the screen also switches to a slower response time.

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NotJoeMama727 OP t1_j6mjrd0 wrote

What if it's an OLED display though?

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Pocok5 t1_j6mkuar wrote

OLED also incurs extra power cost when switching stuff around faster (at the minimum, there are a bunch of multiplexers and a logic driver to convert from the display input signal - a serial protocol over a couple wires - to the thousands of pixel row/column lines) but power save mode on it is usually switching to a dark color theme which lets it turn off pixels and reducing overall brightness.

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