this post was submitted on 05 Dec 2025
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Steam Hardware

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The TL;DR is that the organization that controls the HDMI standard won't allow any open source implementation of HDMI 2.1.

So the hardware is fully capable of it, but they'll get in trouble if them officially implement it.

Instead it's officially HDMI 2 (which maxes out at 4k @ 60Hz), but through a technique called chroma sub-sampling they've been able to raise that up to 4k @ 120Hz.

However there are some minor reductions in picture quality because of this, and the whole thing would be much easier if the HDMI forum would be more consumer friendly.

In the meantime, the Steam Machine also has display port as a completely issue free display option.

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[–] Templa@beehaw.org 28 points 2 weeks ago (8 children)

I really wish I could find a TV within my desired specs that had DisplayPort. We will buy a Steam Machine to use it in place of our docked Steam Deck in the living room, so being able to use DP would be amazing.

[–] Truscape@lemmy.blahaj.zone 19 points 2 weeks ago* (last edited 2 weeks ago) (4 children)

Adapting DisplayPort to HDMI with minimal quality loss is child's play. It's the other way around that's misery.

Any cheap adapter cable that supports DisplayPort In to HDMI Out should be perfectly fine.

[–] Templa@beehaw.org 3 points 2 weeks ago (1 children)

I just realized I have such cable in my desk (brand new), DP to HDMI 4k 60fps

My spouse need something for the other way around for his desk setup

[–] xthexder@l.sw0.com 3 points 2 weeks ago

Those specs sound like HDMI 2 anyway. HDMI 2.1 can do 4K @ 144Hz with HDR. Or apparently even 10K @ 120Hz.

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