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cssbackgroundenergy

Does usage of black backgrounds on webpages really helps in saving energy?


Does the use of a black background like Blackle proclaims, really save energy for Google searches?


Solution

  • Only on CRTs. LCDs have a backlight which is always on, even if black is being shown.

    Blackle themselves show this table:

    Variation in Monitor On Power for selected Monitors (conclusion is LCD is not important, CRT makes a difference if up to 188% more power usage for white rather than black. Minimum difference is 118% more.