2080ti - does it support hdmi over DP?

Discussion in 'Videocards - NVIDIA GeForce' started by klepp0906, Apr 9, 2020.

  1. klepp0906

    klepp0906 Master Guru

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    So I have several Dell U2718Q displays. They support HDR but only over HDMI. Unfortunately my card only has 1 HDMI port.

    I was looking into some DP1.4 to HDMI2.0b adapters and theyre fairly expensive for the active ones, especially needing several.

    Its my understanding you have to use active adapters unless the card supports an hdmi signal over dp natively.

    I dont suppose thats the case with the 2080ti? I'd need the active converters to get my hdr set up?
     
  2. Mineria

    Mineria Ancient Guru

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    Last edited: Apr 9, 2020
  3. Mineria

    Mineria Ancient Guru

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    I think USB-C to HDMI2.0b will do the trick
    https://www.amazon.com/UPTab-USB-C-HDMI-Active-Adapter/dp/B01DPY6AN8

    Yet, only allows you to use 2 HDR monitors, so if you need more I would skip the HDR part since no propper DP1.4 to HDMI 2.0B converter has been released to the public yet, Realtek got something in the works which may come out later this year, Q3 or later.
     
  4. Monstieur

    Monstieur Member

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    The GPU supports DP++ that can output a 600 MHz HDMI 2.0 signal. However there are no 600 MHz DisplayPort to HDMI cables / adapters available. The fastest passive cables / adapters only support 300 MHz. You'll need an active adapter for now.
     

  5. Mineria

    Mineria Ancient Guru

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  6. yasamoka

    yasamoka Ancient Guru

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    How so?

    Why are we talking of pixel clock support on what amounts to a cable?
     
  7. Monstieur

    Monstieur Member

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    Because even passive DisplayPort to HDMI cables have a 3.3 V to 5 V transformer that must be designed for the signal clock. When running HDMI 2.0 resolutions, the signal clock approaches 600 MHz which won't pass through the older cables without being destroyed - it requires an electrical re-design.

    DisplayPort to HDMI is not electrically compatible like DVI to HDMI.
     
    Last edited: Apr 11, 2020
    Cave Waverider likes this.

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