which is more energy efficient, LCD or CRT?

Question

I always thought LCD saves more energy but according to this article: http://tech.yahoo.com/blogs/raskin/16242
CRT if more energy efficient. Is this true?

Answer 1

Thanks good article
The things we will have to do to stop
global warming
no big telly no air con & cold showers
no car , sit in the dark
sounds great

Answer 2

I was a little surprised by that too. A 40" CRT is huge and puts out a lot of heat.

They might be rated like that if left on continuously, but if turned on and off, an LCD should do better. A CRT (particularly the larger ones) need to charge up their capacitance, and it takes longer for them to turn on, and that takes a toll on the TV. An LCD comes on relatively instantly and puts out no heat.

I'm not sure that article is correct about CRTs and LCDs, but even if it were, the weight/size and heat issues would have me pick an LCD over a CRT. I would still need some more convincing on how a CRT is more efficient than an LCD of equivalent size, particularly in the larger sizes.

Answer 3

lcd video demonstrate instruments or lcd video demonstrate instruments are changing the previous CRT or Cathode Ray Tube monitors and are some distance better in an limitless majority of applications. There are numerous reward of lcd video demonstrate instruments over the previous CRT reflects. on a similar time as lcd video demonstrate instruments are compact and mild-weight and eat much less skill approximately 20W while the CRT video demonstrate instruments are cumbersome and heavy ingesting upto 150W. An lcd computer screen produces completely sharp photographs with suitable image geometry while in CRT the sharpness is constrained and it has a tendency to blur greater at severe brightness and with the getting older of the tubes and suffers from geometric distortions. lcd video demonstrate instruments have a consistent tonal scale and can demonstrate text textile with remarkable assessment while the CRT video demonstrate instruments demonstrate solid astonishing areas which will reason different areas of the image to dim and likewise has unfavorable text textile assessment with the aid of fact of constrained bandwidth. lcd video demonstrate instruments do not in many circumstances flicker while a faint flicker can constantly be observed in a CRT computer screen.

Answer 4

If you search Internet for LCD CRT watts per square inch, you will find that they are very similar. It mainly depends on screen size. As we are buying larger LCD and Plasma TVs we are all guilty.

Answer 5

I think they got their numbers wrong. LCDs use much less power per square inch than CRTs.


Energy Star has introduced a 'power per pixel' requirement into their standard. Most LCDs monitors meet it. No CRT monitors do so.

Answer 6

LCD is more energy efficient!!!

Answer 7

not all websites are accurate
LCD is better even to the environment!