Author Topic: Damn you Energy Star  (Read 1480 times)

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Offline tp4tissue

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Damn you Energy Star
« on: Fri, 21 August 2020, 21:03:17 »
Home use TVs sold in US are limited to ~300 watt of power.

In other countries, they're allowed to make 700+ watt TVs. 


m0ar power means Brighter HDR, Higher sustained peak brightness.

It doesn't actually make a difference in energy consumption, because only the highest end TV would have it, but the regulation makes it such that it isn't even possible to build.



Offline Leslieann

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Re: Damn you Energy Star
« Reply #1 on: Fri, 21 August 2020, 21:19:42 »
It may be the same power, but sending that much power here is less efficient because we use 110v vs 220v, so no, not quiet the same.

Energy Star is not mandated, so you can buy non Energy Star tv's here, unless best Buy is selling illegal TVs.


But seriously a 700 watt TV?
WHY?
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Offline tp4tissue

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Re: Damn you Energy Star
« Reply #2 on: Fri, 21 August 2020, 21:22:26 »
But seriously a 700 watt TV?
WHY?

We need m0ar jigawattz to reach dat 4000 nits of brightness.

w/ only 300 watt, peak is ~1800nits, and NOT full field, full field is only 600nits.


Then if we factor in screen size, we need something like 1 to 2 KW . + Water Cooling

Offline suicidal_orange

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Re: Damn you Energy Star
« Reply #3 on: Sat, 22 August 2020, 02:50:08 »
Home use TVs sold in US are limited to ~300 watt of power.
It doesn't actually make a difference in energy consumption, because only the highest end TV would have it


Makes a refreshing change for rich people to not get what they want.  Except they can just pay to import one...
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Offline Sintpinty

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Re: Damn you Energy Star
« Reply #4 on: Sun, 23 August 2020, 07:03:12 »
The lower the brightness the better so it doesn't ruin the best eyes in my family. Almost everyone needs glasses for reading, or general use except me. I have normal vision.

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Re: Damn you Energy Star
« Reply #5 on: Tue, 25 August 2020, 01:00:24 »
300W of LED would be pretty hard to look at already if you did not dissipate most of it as heat through the LCD, i guess you will need oled/qled for you dream tv TP. LCD are pretty inefficient they likely could get much better brightness from 300W by being a bit crafty with how they use the power.
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Offline tp4tissue

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Re: Damn you Energy Star
« Reply #6 on: Tue, 25 August 2020, 04:43:44 »
300W of LED would be pretty hard to look at already if you did not dissipate most of it as heat through the LCD, i guess you will need oled/qled for you dream tv TP. LCD are pretty inefficient they likely could get much better brightness from 300W by being a bit crafty with how they use the power.

ON LCDs, the main loss of light is the optical layers for TVs, the color filters/lcd panel/polarizer/

OLED is more-inefficient than LCDs in terms of power use. It requires more power to reach the same brightness.

With current technology we need ~300 watt per 410inch squared to achieve Tp4's dream TV, so every 31 inches diagonal sized screen (16:9). 

This is only the beginning though as a 62" TV at these specs 800w to 1.2Kilowatt can only reach 1000nits. Active kewling required.