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LCD vs LED TV

Diamond statDiamond stat Posts: 1,473
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in Advice #1
Big difference in electric consumption? The new LED TVs state on the box they are far more efficient, is this true?

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    John_PatrickJohn_Patrick Posts: 924
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    #2
    Diamond stat wrote: »
    Big difference in electric consumption? The new LED TVs state on the box they are far more efficient, is this true?

    Yes.

    Google the same question
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    TelevisionUserTelevisionUser Posts: 41,417
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    #3
    Some impartial info is here: http://www.which.co.uk/reviews/televisions/article/advice/led-vs-lcd-vs-plasma-tv-
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    CitySlickerCitySlicker Posts: 10,414
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    #4
    You can even feel the difference. Try putting your hand on the screen of both, I remember doing this when I changed my computer monitor for LED, it's practically cold on LED but gently warm on LCD, that's all wasted power.
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    David (2)David (2) Posts: 20,632
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    #5
    Its only how the screen is lit.

    Both are lcd.

    ....but yes, size for size, a tv lit using led should use less power, and get less hot.
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    [Deleted User][Deleted User] Posts: 8,916
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    #6
    When it says LED it is still a LCD (it's an industry fiddle to make you think you are getting superior tech). What they should say is that the panel is backlit by LED's, which use less power and emit a brighter light.
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    Diamond statDiamond stat Posts: 1,473
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    #7
    Thanks for the advice guys.
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    NilremNilrem Posts: 6,940
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    #8
    Vernon Bennett wrote: »
    When it says LED it is still a LCD (it's an industry fiddle to make you think you are getting superior tech). What they should say is that the panel is backlit by LED's, which use less power and emit a brighter light.

    I'm not even sure it's the industry, most sets with LED backlighting are clearly labelled as LCD still.
    The other big difference other than power and pure brightness is that LED sets (Depending on the quality) can have much better contrast levels because if they're done properly (as opposed to just throw in an LED strip instead of a CCFL) they can vary the lighting more effectively across parts of the screen.
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    Nigel GoodwinNigel Goodwin Posts: 58,520
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    #9
    Nilrem wrote: »
    The other big difference other than power and pure brightness is that LED sets (Depending on the quality) can have much better contrast levels because if they're done properly (as opposed to just throw in an LED strip instead of a CCFL) they can vary the lighting more effectively across parts of the screen.

    Except almost none do that now, a few 'did' and it proved to make sod all difference and wasn't worth the extra costs. It also makes the set thicker - and the never ending desire for thinner sets means people don't buy them.
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    GageGage Posts: 1,253
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    #10
    I'd be more concerned about the resolution on the TV than the backlight technology used.

    Its rare to find a TV powered by a CFL backlight as they have moved to LEDs
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    Nigel GoodwinNigel Goodwin Posts: 58,520
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    #11
    Gage wrote: »
    I'd be more concerned about the resolution on the TV than the backlight technology used.

    Resolution isn't, and never was, a problem - with decent HD Ready sets easily out performing cheap Full HD sets.
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    walterwhitewalterwhite Posts: 56,944
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    #12
    How much are you seriously going to save each year from reduced power consumption? Genuine question.
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    AndrueAndrue Posts: 23,364
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    #13
    walterwhite wrote: »
    How much are you seriously going to save each year from reduced power consumption? Genuine question.
    That depends on the reduction ;)

    Some LCD TVs with the CFL at maximum (sadly, the default state as shipped along with excessively red colour balance typically) can be over 100w. An LED backlit model could be as low as 20w I reckon.

    If you watch for four hours a day that would be 28 hours a week or 1456 hours a year. 80w*1456 = 116units. That is probably around £15. If you have kids it might be double that of course :)
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    Nigel GoodwinNigel Goodwin Posts: 58,520
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    #14
    Andrue wrote: »
    That depends on the reduction ;)

    Some LCD TVs with the CFL at maximum sadly, the default state as shipped along with excessively red colour balance typically can be over 100w.

    Strange suggestion, as far as I'm aware the default state during install (there usually isn't a 'shipping' state, you select what you want during install) was for the CCFL to auto-dim along with picture content. Also LED sets are FAR redder by default than CCFL ones.

    I wouldn't expect 100W average consumption, unless it was an exceptionally large screen.

    An LED backlit model could be as low as 20w I reckon.

    Likewise, I wouldn't expect as low as 20W for any size of LED set.

    As far as LED vs CCFL goes, an LED light bulb uses about half the energy of a CCFL one - so consumption purely on the back lighting should be roughly about half.
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