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Running at 100% brightness represents a worst-case scenario for power consumption. The results match our test with Microsoft Word and a blank page.
Switching brightness to 50% makes a significant difference, as the displays reduce their power consumption as follows:
Finally, the reduction to only 10% display brightness dramatically reduces power consumption with a white screen to as little as 9 W on the 22” Acer display, 12 to 21 W on the 19”/20” displays, and 26 W on the 24” Samsung. The only monitors showing little impact are the CRTs.