China unveils GPMI, an HDMI and DisplayPort rival with 192 Gbps bandwidth and 480W power delivery

[midian182]

Something to look forward to: An alliance of Chinese companies has announced a new audio and video wired interface standard called the General Purpose Media Interface or GPMI. Not only does it boast up to 192 Gbps bandwidth – designed to support 8K – but GPMI also provides 480W power delivery.

The Shenzhen 8K UHD Video Industry Cooperation Alliance writes that GPMI comes with two connectors: Type C, which is compatible with existing USB Type-C ports, offering 96Gbps bandwidth and 240W of power transfer, and Type-B, which uses a proprietary connector and packs the full 192 Gbps/480W.

While GPMI with the Type C-connector has the same power delivery as USB4, the 96 Gbps bandwidth is more than double the 40 Gbps data limit of USB4 using Extended Power Range (EPR) under USB PD 3.1.

HDMI 2.1, meanwhile, reaches 48Gbps with no power delivery, while Thunderbolt 4 offers 40 Gbps and 100W power delivery.

Standard	Bandwidth	Power Delivery
GPMI Type-B	192 Gbps	480W
GPMI Type-C	96 Gbps	240W
DisplayPort 2.1 UHBR20	80 Gbps	No Power
HDMI 2.1 FRL	48 Gbps	No Power
Thunderbolt 4	40 Gbps	100W
USB4	40 Gbps	240W
HDMI 2.1 TMDS	18 Gbps	No Power

GPMI Type B promises high-bandwidth video, networking, and power delivery through a single cable, reducing the number of required cables. The standard has some major implications for the likes of laptops with external GPUs.

GPMI is said to come with seven main advantages over current interface technologies: bidirectional multi-stream, bidirectional control, high-power power supply, ecological compatibility, ultra-fast transmission, fast wake-up, and full-chain security.

GPMI can also be daisy chained and supports HDMI-CEC, allowing users to control multiple devices connected via GPMI with a single remote.

The Type-C version of GPMI has already been licensed for use under the USB-IF (USB Implementers Forum).

More than 50 Chinese companies are working on the development and standardization of GPMI, including TCL, HiSilicon, Hisense, and Huawei.

It's unclear when the new standard will start making its way into consumer products and how much it will be adopted outside of China. We don't know anything about the maximum cable lengths right now, either.

The aim is for GPMI to be released in phases, first for home entertainment devices, then automotive and transport, followed by industrial applications.

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China unveils GPMI, an HDMI and DisplayPort rival with 192 Gbps bandwidth and 480W power delivery

 

[The Talking Tech]

Now that's a true upgrade from HDMI.

But only one question remains....

Would the rest of the world adopt this new technology universally on their TVs, PCs, Consoles?

 

[mbrowne5061]

Now that's a true upgrade from HDMI.

But only one question remains....

Would the rest of the world adopt this new technology universally on their TVs, PCs, Consoles?

As long as this new standard is up-front and transparent with specs and controller designs, and reasonable with their licensing fees, I don't see why not.

 

[gamerk2]

Now that's a true upgrade from HDMI.

But only one question remains....

Would the rest of the world adopt this new technology universally on their TVs, PCs, Consoles?

Probably not, given how entrenched HDMI is in the consumer market. There's a reason why SPDIF still hangs around for audio equipment despite how horribly obsolete it is. The only way this gains any amount of traction is if it displaces DisplayPort in the PC display market.

 

[dangh]

That's a great stuff and I really would like a wide adoption. HDMI consortium is way to limiting, effectively undercutting Linux options in using the interface which is madness. If this above will have an open specification I'll be happy to use it.

 

[HAZERD2]

Where is the 480W coming from? I don't think it will be your laptop or battery sensitive stuff.

The rest of the news is awesome but...

I might be wrong...
It might be a PC exclusive thing with 1000W PSUs though

I'll wait and see

 

[umeng2002]

I, for one, welcome our Chinese overlords.

 

[toooooot]

Creation is just half the task. Creating a structure that manages updates, fixes and provides info on it is the real thing. That requires some skill that people who maintained these world's most used standards like HDMI.

 

[ttrtilley]

Where is the 480W coming from? I don't think it will be your laptop or battery sensitive stuff.

The rest of the news is awesome but...

I might be wrong...
It might be a PC exclusive thing with 1000W PSUs though

I'll wait and see

Power probably comes from the wall and eventually goes to the laptop.

 

[bviktor]

So they refused to implement Thunderbolt for a decade for absolutely no reason, they stuck with patented, inferior HDMI, but now suddenly decided this universal connector is the way to go? Except with a new protocol on the same connector?

Morons.

USB-C, DP and USB-PD can already do 240W and 8K@60 Hz even with HDR, this gimmick solves absolutely no problems whatsoever, it just introduces a new one, namely compatibility issues.

All in the name of being in control, of course. They just want to have it in their hands. I guess having a royalty free, open standard is not their thing.

 

[Mark Rejhon]

We need upgraded cable standards --

With the recent scientific blind test that showed scrolling/panning/mouselook tests that 4x geometrics on OLEDs showing 120Hz vs 480Hz more human visible to mainstream than 60Hz vs 120Hz

(*asterik: Must be OLED + 0.0ms GtG + framerate=Hz + comparing 4x geometrics + fast full screen scrolls/pans/turns). Most scientific tests focus on specific games, but this test focussed on mudane browser scrolling / map panning "readability-while-scrolling" tests -- a far more mainstream application of 480Hz for flickerless CRT motion clarity of the future.

So 120Hz-480Hz is not just for gaming only, but benefits office use too.

In their burn-in test, TechSpot also found 240Hz OLED was more impressive for office productivity than expected.

The ability to do 8K 120Hz, or 4K 480Hz weithout DSC will be possible without DSC on this cable, and possibly 8K 480Hz-1000Hz if forms of DSC is enabled.

This would be impractical for 3D rendering but doable for 2D stuff, which is where a lot of motion blur appears on giant 45" desktop monitors bigger than our 15" VGA CRTs.

I would have preferred to stay with standard connectors, but 80Gbps is not enough for "many mainstream display use cases of the future"