If all HDMI cables are basically the same design, pinout, etc. how have they been able to double, quadruple, etc. the bandwidth on them over time?

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Going from HDMI 1.4 to 2.1 there is a 5x increase is bandwidth. Is it because the cables themselves were never the issue but it was the connectors/chips in the devices themselves that couldn’t handle it?

I know part of it is the actual quality of the cables themselves and tighter tolerances, more twists in the wires, material purity, etc. but I can’t imagine that alone would be enough to fully account for this.

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Anonymous 0 Comments

To take things back a few years: When I was taking electrical engineering in the mid 1980’s, we were taught that due to bandwidth of phone lines, there was a physical limit to the data speed through a phone line of 1200 baud.

The modems they had in the lab were over $1000 each.

Within a few years they had discovered how to work around the physics and pass 56 kb/s through unchanged phone lines, and a few years later they were using the same phone lines for DSL at 10 Mb/s.

Even though the physics don’t change, we find ways around things!

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