USB4 Version 2.0 Announced with Speeds of Up to 80 Gbps over USB Type-C

Tsing

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The USB Promoter Group has announced USB4 Version 2.0, a new update to the evolving USB standard that will enable "up to 80 Gbps of data performance over the USB Type-C cable and connector."

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TB 4 works over USB C now, I don’t know if it will get updated to this standard soon or not but it was rated at 40Gbs
 
TB4 is 40Gbps full-duplex USB4 is up to 40Gbps half-duplex.

USB4 v2 looks to get bandwidth parity with TB4.

The other differences come down to signaling and power delivery, IIRC.
 
Nice. So if I ever buy an external NAS/drive box USB4 seems better than gig ethernet.
 
So 80 Gbps seem to be the magic number for some next-gen stuff since that's the same speed as the fastest DisplayPort 2.0 UHBR spec. No doubt because we've already seen USB-C DP support in recent years. I wonder if UB4 2.0 will offer full DP 2.0 UHBR support or if there will be some kind of overhead-related limitations.
 
Peter_Brosdahl said:
So 80 Gbps seem to be the magic number for some next-gen stuff since that's the same speed as the fastest DisplayPort 2.0 UHBR spec. No doubt because we've already seen USB-C DP support in recent years. I wonder if UB4 2.0 will offer full DP 2.0 UHBR support or if there will be some kind of overhead-related limitations.
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Biggest question for me is how they intend to wire it up.

I'm down if the ports on boards are hooked up to IGPs with no latency, and if GPU manufacturers decide to put more USB-C ports on GPUs, similar.

With PCIe 5.0, I'm betting that we'll have enough bandwidth, and with ATX 3.0 (the new 16-pin 600W power connectors) enough power to possible start fully powering many external displays, especially cheaper edge-lit LCDs.
 
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