What is true about screen savers?

Question

Options

• AScreen savers cause a computer to use more energy than switching off the monitor.
• BScreen savers save on energy by putting the monitor in sleep state.
• CScreen savers using a bright, colored background use the same amount of energy as with black

• A
  94% (31)
• B
  3% (1)
• C
  3% (1)

Explanation

Screen savers were originally designed to prevent phosphor burn-in on older CRT monitors, but they do not save energy - in fact, running animated screen savers keeps the GPU and display active, consuming more power than simply turning the monitor off or letting it enter sleep mode.

Why B is wrong: Screen savers do not put the monitor in sleep state. Sleep/standby mode is a separate power management feature triggered by OS idle settings, not by screen savers.

Why C is wrong: A black screen saver uses less energy on OLED/plasma displays, but on LCD monitors energy consumption is nearly the same regardless of color - and either way, a screen saver consumes more power than sleep mode.

Memory tip: Think of "screen saver" as a misleading name - it saves the screen (from burn-in), not energy. For energy savings, use your OS power settings to sleep or turn off the monitor instead.

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