As noted, an all white web page uses about 74 watts to display, while an all black page uses only 59 watts. I thought I would do a little math and see what could be saved by moving a high volume site to the black format.
Take at look at Google, who gets about 200 million queries a day. Let's assume each query is displayed for about 10 seconds; that means Google is running for about 550,000 hours every day on some desktop. Assuming that users run Google in full screen mode, the shift to a black background will save a total of 15 (74-59) watts. That turns into a global savings of 8.3 Megawatt-hours per day, or about 3000 Megawatt-hours a year. Now take into account that about 25 percent of the monitors in the world are CRTs, and at 10 cents a kilowatt-hour, that's $75,000, a goodly amount of energy and dollars for changing a few color codes.
sursa:
http://ecoiron.blogspot.com/2007/01/black-google-would-save-3000-megawatts.htmlextra:
http://www.microtech.doe.gov/EnergyStar/info.htm#displayInteresting stuff, desi Google ar arata ca naiba pe negru. De asemenea, nu ma intereseaza cati W "consuma" o anumita pagina, mi se pare mai important comfortul ocular. Albul noaptea e destul de nasol, dar nici negrul nu e f placut. Poate un gri mai inchis?
