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China launches HDMI and DisplayPort alternative — GPMI boasts up to 192 Gbps bandwidth, 480W power delivery (www.tomshardware.com)
submitted 1 year ago by to c/technology@lemmy.world
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[–] 65 points 1 year ago (6 children)

This must be for commercial displays where it is beneficial for installation to have power and data over a single cable.

I can't think why I would want power delivery to my PC monitor over the display cable. It would just put extra thermal load on the GPU.

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  • [–] 50 points 1 year ago (3 children)

    I think it's aimed at TVs in general, not computer monitors. Many people mount their TVs to the wall, and having a single cable to run hidden in the wall would be awesome.

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  • [–] 14 points 1 year ago (5 children)

    I wonder what the use case is for 480W though. Gigantic 80" screens generally draw something like 120W. If you're going bigger than that, I would think the mounting/installation would require enough hardware and labor that running out a normal outlet/receptacle would be trivial.

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  • [–] 4 points 1 year ago* (1 child)

    Even in that scenario it will complicate the setup. Now your Roku will also have to power your TV? No, any sane setup will have a separate power cable for the TV.

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  • [–] 8 points 1 year ago

    I don't think you'd ever have a peripheral power the tv. The use case I'm envisioning is power and data going to the panel via this single connector from a base box that handles AC conversion, as well as input (from Roku etc) and output (to soundbar etc.). Basically standardizing what some displays are already doing with proprietary connectors.

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  • [–] 8 points 1 year ago (1 child)

    It would just put extra thermal load on the GPU.

    Passing power through doesn't have to put noticeable load on the GPU. The main problem I see there is getting even more power to the GPU - Nvidia's top cards are already at the melting point for their power connector.

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  • [–] 7 points 1 year ago (1 child)

    Passing power through doesn’t have to put noticeable load on the GPU.

    I specifically said thermal load. Power delivery always causes heat dissipation due to I^2^R losses.

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  • [–] 3 points 1 year ago

    That's what I meant. Compared to the power the GPU is actually using, transmission losses for a pass-through should be negligible. If you have a good way to get it to the card in the first place.

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  • [–] 8 points 1 year ago

    The popular use for power delivery through a display cable is charging a laptop from your monitor; it's already very common with Thunderbolt or USB-4 monitors. But 480W seems a bit overkill for that.

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  • [–] 1 point 1 year ago

    That already kinda allow this and the actual load is pretty small

    Even a big 30 in display is maybe 20 watts

    Well, power delivery goes several times that. Laptops are another very useful case for it. It's nice to be able to just have a single display port and power connector

    You can do this to an extent, today

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