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Ulysses_ 11-09-2012 03:19 AM

Best low wattage displays
 
What are some of the best low wattage displays for desktop systems at present?

Low wattage important because it is to be used at an off-grid house.

System has the following display ports:

1 x D-Sub port
1 x DVI-D port
1 x HDMI port
1 x DisplayPort

cascade9 11-09-2012 05:38 AM

Mod a 'normal' monitor for 12v input.

LED monitors are more power efficent than LCDs.

Ulysses_ 11-09-2012 06:18 AM

Are the actual pixels LED's in an LED display, or just the backlight behind the LCD/TFT/...?

Ulysses_ 11-09-2012 06:32 AM

It says here 12W typical consumption from a 22" display, and it is AC powered. Does this sound right?

http://www.ebay.co.uk/itm/EA223WM-55...nents_Monitors

michaelk 11-09-2012 07:33 AM

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.

jefro 11-09-2012 02:56 PM

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 lcd cc-cfl keeps constant backlight while the led can adjust. Both a CC-CFL 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 some of the compact cold cathode lamps for normal home use and I still like them better than the LED's but you can't get them in high wattage. I have a number of leds that simply stink on light quality.

Oddly my so called large bad plasma tv only uses 135W or so.

cascade9 11-10-2012 01:47 AM

'LED monitor' is normally meant as 'LED backlit LCD'. It is or at least was possible to buy LED only displays.

Quote:

Originally Posted by michaelk (Post 4825744)
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.

Quote:

Originally Posted by jefro (Post 4826074)
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.

http://blog.whitesites.com/Save-Mone...82812_blog.htm

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.

http://www.tomshardware.com/reviews/...-cfl,2683.html

jefro 11-10-2012 03:19 PM

The only difference between the two is generally the backlight. For power efficiencies between a cold cathode FL and a LED you need to use other studies that are not directly for this type of application. Use studies for light output for cold cathode per watt and light output for led. The cold cathode tends to be slightly better in most tests.

The way the led does perform is how I stated. It can more quickly and easily vary the output when needed. In a static screen the numbers would be similar.

Ulysses_ 11-10-2012 04:36 PM

Off-topic: maybe one of you guys knows something about the following or you know where to look. Does strobe light technology use anything made of gold?


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