On Sat, 2009-02-07 at 08:02 -0800, Jesse Keating wrote: > On Sat, 2009-02-07 at 10:07 -0500, Dimi Paun wrote: > > - replace the background picture with just black > > - default to a inverted color scheme (predominantly black) > > On modern hardware, black actually costs more power than white. In > order to make black, the existing white light has to be filtered. Got my Kill-a-watt meter. I wasn't able to measure a difference between a black screen and a white screen on my wife's eMachines m6805 laptop. However, I measured a trashy old (1997) Sceptre 13in CRT with both solid black and white desktop backgrounds and various resolutions and refresh rates: Textmode (Black) 40W 800x600@60 44W - 53W 1024x768@60 47W - 57W 800x600@75 49W - 58W My ancient (1988?) Mitsubishi 26in TV ranges between 80W and 100W with black and white screens. So I'm definitely measuring a big difference between black and white with CRTs. Signal bandwidth also makes a difference. Other than a few laptops I don't own any LCDs to test though. The laptops show no measurable difference.
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