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A comment on Ask HN: To save energy, light mode + dim screen or dark mode + bright screen?.

Re:Ask HN: To save energy, light mode + dim screen or dark ... by avocadoLife on Wednesday October 02, 2019 @10:24AM (#21136762)
AFAIK, dark mode can save energy on OLED based screens (due to pixels being completely turned off) but not on LCD-based screens. However, lowering brightness should probably always lower energy usage.
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