cf. https://news.ycombinator.com/item?id=47908287 https://news.ycombinator.com/item?id=47908287 Yes, that signal processing is massively more expensive. A 10Gb

cf. https://news.ycombinator.com/item?id=47908287 https://news.ycombinator.com/item?id=47908287 Yes, that signal processing is massively more expensive. A 10Gbase-T PHY is a sophisticated DSP. Not sure if the power needs are exponential, given we only have a few data points, but it's in the ballpark. (1000base-T PHYs are already DSPs, but nowhere near as sophisticated)