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High Speed HDMI (18Gbps) is only good for 4K60 at 4:4:4 without HDR.I dabble in several areas, and claim no expert knowledge in this...but. Having just purchased a new television that supports HDMI 2.1, I've been trying to understand the tech, the ratings, and the labeling (or adherence to standards).
For 8k/60 or 4k/120 (with 4:4:4 and HDR), it is desirable to have "High Speed HDMI" which passes 18Gbps. The next level is "Ultra 8k High Speed" which passes 48Gbps.
I'm not sure what eARC requirements (on top of the above 4k/120) would need. I -do- know that it is VERY hard to determine the ratings of a lot of cables and whether an active cable is needed or recommended. (My TV HDMI ports are rated for 48 Gbps, so I'd like to have HDMI cables to match that rating...but all I've found at that speed are 1 foot or 3 foot lengths. Too short for my setup.)
The next few years should (I hope) see the adoption of SPEED RATINGS (similar to the change to wifi labeling) so that the consumer can match his content creation device (PC, DVD player, video card, etc.), to the cable, to the content imager (monitor, TV, projector).
And it might take a long time, just look at Steam's data
~65% are still rocking 1080p.
~5% are on 1440p
<3% are on higher resolution
I assume the rest are at a lower resolution like 720p??
I’d like my next purchase (from a GTX 1080) to be HDMI 2.1 capable for 4K 120Hz 4:4:4 desktop use. Have either AMD or nVidia indicated when they expect their cards to support high refresh rate UHD?
Whenever this comes out, assuming it works properly, I'll probably upgrade to a 55" C9 OLED to go with it.
https://www.anandtech.com/show/1453...s-rtd2173-displayport-14-to-hdmi-21-converter
As much as I look forward to this, in the back of my mind I can't help but visualize having to buy a new TV, AVR, and a bunch of new cables. All of which are going to be expensive and likely have technical kinks to work out.
eARC doesnt even need HDMI 2.1, it has been back ported to some HDMI 2.0b devices.I'd just buy one cable and hook whatever you have up to the TV direct until you have cause to upgrade the rest. Don't know of any feature of HDMI 2.1 that would be useful for anything other than gaming except eARC, and that gets a solid whatever from me for gaming.
[granted at some point it will be nice to get it all plugged in together...]
Yeah, Nvidia has a long habit of waiting at least two years before supporting a new HDMI standard. As-opposed to DP, where they support it within a year.
AMD is all over the place, and shouldn't be counted on for anything.
HDMI 2.1 first appeared last fall, so Fall 2020 is the earliest you can expect things.
I can push 4K 60Hz on a R9 - 280 .. all over the place my ass ,
I can push 4K 60Hz on a R9 - 280 .. all over the place my ass ,