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Thunderbolt 3 allows 40 Gbps in each direction using two 20 Gbps channels for each direction. As a protocol driving a display is mainly unidirectional, DisplayP
by Dunedan 7y ago
Thunderbolt 3 allows 40 Gbps in each direction using two 20 Gbps channels for each direction. As a protocol driving a display is mainly unidirectional, DisplayPort 2.0 simply uses all four channel for transmitting the data to the display, resulting in 80 Gbps. So they're not squeezing more data through the connector and the cables than Thunderbolt 3 already does, but simply do it in one direction only.
- p1mrx 7y agoAh, that makes sense. There's probably still room in the copper for more than 20 Gbps per lane, if they switch to an encoding with more than one voltage level, like PAM4.