'LED monitor' is normally meant as 'LED backlit LCD'. It is or at least was possible to buy LED only displays.
Originally Posted by michaelk
Sounds low to me. Taken in context IMO it would be typical for that particular model and not for any 22" display. A quick search on a few 22" LED monitors varied from 23 - 35 watts.
12watts is a little low, its only a little IMO. Then again, if its in low brightness mode and displaying slowly, it could be right.
22-35 watts would probably be 'worst case scenario' power consumption (brightness 100% with high frame/refresh rates). Real world power consumption would be lower.
Originally Posted by jefro
A led has an advantage over a lcd (cold cathode FL) in that it can more quickly adjust the backlight. Both led and lcd are pretty similar on same brightness. For the most part a led keeps constant backlight while the led can adjust. Both a CCFL and LED by normal test are almost exactly the same power consumption and efficiency. Both led and lcd use the same screen but back light it differently.
I have never seen any test where a LED is equaled by an LCD. Most of the tests I've seen have the LED running at half the power consutmpion of the LCD.
Bad test, but the only one I sem to be able to find now.
Samsung SyncMaster 2493HM (LCD) 77 watts.
Dell U2412M (LED) 27 watts.
Both 1920x1200 24'' monitors.
This is also well worth a look even though its CRTs vs various aged LCDs with only one LED in the test.