Using dark mode might be more energy-intensive if the screen is an LCD.
But the difference is nothing compared to the accompanying computer tower.
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I use dark mode to save my eyes, not energy.
Interestingly though I haven't had OLED display on any of my devices since 2015.
I thought that with OLED screens, and a dark mode that supports it, black pixels are actually not backlit, meaning they use less energy. Is that not right?
Not necessarily, if the LCD has local dimming depending on the dimming zone size it could be more energy efficient in dark mode.
This does not make sense, explain.
LCDs work by using energy to block the backlight strategically. OLEDs work by only lighting up what you're likely to be able to see in the first place, no backlight.
I use dark mode to save my eyes, not energy.
Interestingly though I haven't had OLED display on any of my devices since 2015.