and beyond just the flops...

By: Adrian (a.delete@this.acm.org), December 11, 2020 1:37 am
Room: Moderated Discussions
anonymou5 (no.delete@this.spam.com) on December 10, 2020 3:12 pm wrote:
> sorry, not interested in the BS portion
>
> back to the display problem at hand
>
> I see that some C-to-DP cables are bidirectional, i.e. people can drive
> 4K displays with C ports from a device that has an outgoing DP
>
> does this work for C-to-HDMI cables too? anyone? the web isn't so clear on it to me (for now)
>
> specifically, what about hooking one of these...
>
> https://www.sonnetstore.com/products/egfx-breakaway-puck-560
>
> ...to the TB on the Mac, and then driving the 4K LG displays from there, with the aforementioned cables?
>
> bonus points if it works for 4 displays, not just 2 -- hence
> the HDMI question above (as the puck has 3x DP + 1x HDMI)
>
> real world tech problems ;-)


That one is not an adapter, but an external Radeon GPU, so the same as a second graphic card, connected through PCIe over Thunderbolt. As long as the operating system supports it, which should be true for any MacOS, you can connect any monitors to it, like to any other graphic card.

The only limitation is that the external graphic card is connected through a 4-lane PCIe 3.0 instead of through a 16-lane PCIe 3.0, like an internal card.

It is weird that on that page there is no mention about the size of the internal memory, though on other sites it is given as 4 GB.


To connect an HDMI monitor to a Thunderbolt or USB Type-C connector, there are 4 possible ways:

1. If the connector is Thunderbolt, an external graphic card, connected through PCIe over Thunderbolt, with a HDMI connector on the external GPU, like in your example

2. If the connector is Thunderbolt, an adapter from DisplayPort to HDMI, connected through DisplayPort over ThunderBolt. The adapter can be a box with Type-C & HDMI connectors, or it can be just a cable with Type-C and HDMI connectors at the 2 ends.

3. If the connector supports the alternate mode DisplayPort of the USB standard, an adapter from DisplayPort to HDMI, connected through DisplayPort over Type-C USB. The adapter can be a box with Type-C & HDMI connectors, or it can be just a cable with Type-C and HDMI connectors at the 2 ends.

4. If the connector supports the alternate mode HDMI of the USB standard, an adapter from Type-C USB to HDMI, connected through HDMI over Type-C USB. The adapter can be a box with Type-C & HDMI connectors, or it can be just a cable with Type-C and HDMI connectors at the 2 ends.


The first 3 kinds are common. I have not seen any equipment that supports the 4th kind, with alternate mode HDMI, but they might exist, but not for Apple products, as I never heard about Apple supporting this mode.











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TopicPosted ByDate
M1 GPU microbenchmarks (peak FLOPS)K.K2020/12/05 03:31 AM
  M1 GPU microbenchmarks (peak FLOPS)K.K.2020/12/05 03:57 AM
  M1 GPU microbenchmarks (peak FLOPS)Adrian2020/12/05 04:00 AM
  M1 GPU microbenchmarks (peak FLOPS)Chester2020/12/05 10:39 AM
    M1 GPU microbenchmarks (peak FLOPS)K.K2020/12/06 03:46 AM
  M1 GPU microbenchmarks (peak FLOPS)Maynard Handley2020/12/05 12:12 PM
  M1 GPU has higher FP32 than A-series GPUsAndrei F2020/12/06 03:24 AM
    M1 GPU has higher FP32 than A-series GPUsK.K2020/12/06 03:49 AM
    M1 GPU has higher FP32 than A-series GPUsJeff S.2020/12/06 11:12 PM
      M1 GPU has higher FP32 than A-series GPUsK.K.2020/12/07 02:32 AM
        M1 GPU has higher FP32 than A-series GPUsJeff S.2020/12/07 10:29 PM
          M1 GPU has higher FP32 than A-series GPUsK.K.2020/12/09 01:35 AM
            M1 GPU has higher FP32 than A-series GPUsAdrian2020/12/09 02:36 AM
              M1 GPU has higher FP32 than A-series GPUsK.K.2020/12/09 02:59 AM
                M1 GPU has higher FP32 than A-series GPUsAdrian2020/12/09 03:16 AM
                  M1 GPU has higher FP32 than A-series GPUsK.K2020/12/09 04:56 AM
                    M1 GPU has higher FP32 than A-series GPUsAdrian2020/12/09 05:28 AM
                      M1 GPU has higher FP32 than A-series GPUsK.K2020/12/09 06:01 AM
                        M1 GPU has higher FP32 than A-series GPUsAdrian2020/12/09 06:37 AM
                          and beyond just the flops...anonymou52020/12/09 02:08 PM
                            and beyond just the flops...Doug S2020/12/09 03:06 PM
                              and beyond just the flops...Maynard Handley2020/12/09 04:05 PM
                                and beyond just the flops...Adrian2020/12/09 05:36 PM
                                and beyond just the flops...anonymou52020/12/09 08:28 PM
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                                      and beyond just the flops...anonymou52020/12/10 02:51 AM
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                                        and beyond just the flops...Megol2020/12/10 10:57 AM
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                                            and beyond just the flops...anonymou52020/12/10 04:12 PM
                                              and beyond just the flops...anonymou52020/12/10 04:24 PM
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                                                            and beyond just the flops...Maynard Handley2020/12/11 11:22 AM
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                                                  and beyond just the flops...Dummond D. Slow2020/12/11 09:41 AM
                                                    and beyond just the flops...Maynard Handley2020/12/11 10:01 AM
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                                                        and beyond just the flops...Dummond D. Slow2020/12/11 10:24 AM
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                                                    and beyond just the flops...anonymou52020/12/11 03:01 PM
                                                    and beyond just the flops...David Hess2020/12/12 08:17 AM
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                              and beyond just the flops...useruser2020/12/09 09:38 PM
                                and beyond just the flops...anonymou52020/12/10 02:31 AM
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