From March 2023 the EU is introducing (opens in new tab) new energy efficiency rules which could effectively ban the sale of the most power-hungry televisions, with 8K models being top of that list. This came as a surprise to me. Not because the EU is making such legislation - that's nothing new (as detailed below) - but because I was under the impression that modern, flat panel LCD and OLED displays were already energy efficient.
The transition from inefficient analog cathode ray tube (CRT) televisions to LCD flat panel screens heralded a new era of low-power TV viewing. But since then both screen sizes and their native resolutions have climbed ever higher, and now we have huge 8K TVs which ravage far more power than you might expect.(opens in new tab)
Take for instance a comparison between two 65-inch Samsung QLED televisions: the 4K QN90B Neo QLED (opens in new tab), and the 8K QN700B Neo QLED (opens in new tab). Samsung rates the 4K model with a typical power consumption of 111 watts, whereas the 8K display typically consumes 219 watts - nearly double. Step down to the 55" version of the QN90B - still 4K resolution - yet its typical power consumption drops to 84 watts. It's therefore clear - from this admittedly small sample study(!) - that the push to ever larger, more pixel-packed televisions brings with it a significant increase in power consumption.
And it's not just televisions that consume extra power when dealing with 8K content. The additional computer processing performance required to edit and export 8K footage also inevitably consumes additional power over that required to encode 4K content, though this is beyond the scope of the new EU energy efficiency rules.
This isn't the first time we've seen the EU impose power consumption restrictions on consumer appliances. Back in 2014 the EU ruled (opens in new tab) that vacuum cleaners sold in the union couldn't be fitted with motors exceeding 1600 watts. This reduced again in 2017, to 900 watts. Manufacturers - or at least one prominent producer of bagless vacuums - didn't take kindly to the legislation, and consumers apparently flocked to buy the most powerful models before they were banned, presumably for fear of losing precious suction power.
But are the efficiency rules affecting 8K TVs as significant? Here we're talking about a reduction of maybe 100 watts per appliance - a fraction of the energy savings made by restricting vacuum cleaner consumption. I think the more pertinent issue here is whether 8K content is actually necessary at all. According to some sources (opens in new tab), you'd need to be positioned as close as 1.5 meters to an 80-inch television to really see the resolution difference of 8K over 4K, meaning that at any realistic viewing distance, an 8K TV offers no appreciable resolution benefit over a 4K display. And that's assuming you can even find any significant 8K content to actually watch in the first place.(opens in new tab)
Sure, the resolution jumps from SD, through DVD 576p, 720p, 1080p and then to 4K could each be justified by the perceptible improvement they gave in actual viewing quality. But by quadrupling resolution yet again to 8K (8K contains 4x times the number of pixels as 4K), we've now gone beyond the point where the vast majority of home consumers can actually perceive, let alone appreciate, the increase in resolution.
8K may be great for marketing, but it's got little use in the real world, and now it seems it might even be harming the world.
Story credit: IBC (opens in new tab)