USB4 Version 2.0 with 80Gbps speeds is coming
pcgamer.comThe USB Promoter Group(opens in new tab) has pre-announced the next USB version. USB4 version 2.0 promises to deliver speeds of up to 80Gbps. That’s double the 40Gbps speed of USB4 and Thunderbolt 4.
The technical details are still being worked on, but some of the key characteristics include the aforementioned 80Gbps support, type-c connectors, a higher power delivery spec, backwards compatibility with previous USB and Thunderbolt 3 standards, and support for the latest DisplayPort and PCIe specs.
In a welcome move, existing 40Gbps USB cables should support up to 80Gbps transfer rates, so a good quality 40Gbps USB cable should remain perfectly viable for many years to come.
Even more interesting is the claim that the new spec will allow USB 3.2 devices to potentially exceed 20Gbps. Details on how this will be accomplished aren't yet known. The cables themselves may not be the limiting factor but rather controllers or other components. USB 3.2 devices may also support 'latest versions of the DisplayPort and PCIe specifications.' Backward compatibility is a major strength of the protocol, but elevating the spec of older devices is quite something else. I look forward to seeing just how this comes to fruition, and what, if any limitations there are.
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The USB developers haven't settled on a naming scheme. USB 4.0 Version 2.0 is mercifully, just a placeholder name. It
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