USB4 Version 2.0 Could Support Up to 120 Gbps Asymmetric Data Transfer Speeds

[Peter_Brosdahl]

It's barely been a day since the official announcement for USB4 Version 2.0 and now it seems the new standard may have even more to offer. USB4 Version 2.0 is already known to...

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[kcthebrewer]

This is PCIe 3.0 x16 speeds

If the latency is good this could be the fix for external GPUs not counting Asus's incredibly expensive proprietary solution

 

[Brian_B]

This is PCIe 3.0 x16 speeds

If the latency is good this could be the fix for external GPUs not counting Asus's incredibly expensive proprietary solution

Thought Thunderbolt could already do that?

 

[LazyGamer]

Thought Thunderbolt could already do that?

And USB 4 2.0 will be able to do the same... if they wire it properly!

 

[Grimlakin]

I think the problem is this is asymmetric meaning one direction at a time. Correct me if I'm wrong but PCIE isn't asymetric is it?

 

[Brian_B]

PCIe is 1 bit dual simplex (symmetrical) per lane

PCI Express - Wikipedia

en.m.wikipedia.org

 

[kcthebrewer]

Thought Thunderbolt could already do that?

Not well

The current iteration is 40gbps and it still has massive problems with stuttering from every review I've watched on it

This new standard is 40 symmetric and 80 asymmetric, it should 'fix' it

Not apples to apples but a good comparison of the limits of 40gbps thunderbolt -

 

[DrezKill]

USB4 v2.0 Specification Published For Doubling The Performance - Phoronix

www.phoronix.com

So Type-C passive cables are 40 Gbps, and the active cables are 80 Gbps. "Alternatively, the updated spec allows the configuration of up to 120 Gbps in one direction and 40 Gbps for the other direction, such as for high-end displays and other configurations not needing equal bandwidth."