8K Displays Use Twice The Power Of 4K Versions: Research

December 3, 2020 by Dave Haynes

A pair of tech research firms have produced an interesting report on the energy demands of consumer video devices, and produced some insights I am guessing are not widely known – notably that 8K displays are energy hogs.

The joint study – called The Sustainable Future of Video Entertainment – was released by InterDigital and Futuresource. It suggests consumers and businesses embrace sustainable practices to offset the growing carbon footprint of the video industry. 

The research revealed, among many things, that:

“The data in this report highlights the importance of continued technical progress in streaming, networking, compression and device technology, but also the need for individuals to make responsible choices,” says Henry Tirri, CTO, InterDigital. “For instance, an individual watching an information broadcast on a 4K TV can lessen their energy footprint by almost 40% simply by choosing to watch the content in 720p – and even more by choosing to watch it on a tablet or their smartphone. With the awareness that studies like the InterDigital/Futuresource study will bring, individuals will be empowered to understand and make those choices.”

The press release does not say why 8K displays use so much more energy, but I assume that increased energy consumption owes to pushing the LED backlighting harder on displays, and maybe having a lot more LED chips to enable local dimming (which results in better contrast). 

8K would also require more real-time processing for things like High Dynamic Range (HDR).

TVs and commercial displays for digital signage are technically different, of course, but not THAT different. It’s not clear, at all, when 8K will be a thing in digital signage, or if it needs to be. Just like 4K not that many years ago, the common refrain is that there is no content. That will change, but it is likely 8K will be a niche product for commercial applications – at least for the next few years.

An 8K display in luxury retail, commercial real estate sales or medical settings would be interesting and useful, but the meat and potatoes digital signage jobs like QSR menu boards and wayfinding displays don’t need that kind of resolution.


  1. Rein Taul says:

    Hi Dave,

    Every time I see your coverage (good stuff, by the way) of another public or retail space covered in LED surfaces, I wonder when the consideration for power waste will start hitting home in this industry. I don’t stay close to or partake in industry associations, but I do often scan what is discussed, and I rarely see power usage discussed. I’m frankly very surprised. Perhaps there is a commercial preference to avoid the subject.

    Much is made of power consumption of AV devices in the home, including idle or parasite power laws in some jurisdictions. This is good, but it really makes me wonder why consumer products are the black sheep. Especially when I walk into a shop or mall to be surrounded by electronic wall paper, sometime even running 7/24. And let’s not even get started on some of the outdoor light pollution. There should be a more responsible voice in this industry.

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