upvote

points

by brcmthrowaway14 hours ago |
comments
upvoteby syhol14 hours ago|
next
[-]
- Thunderbolt 3 is a superset of USB 3.1

- USB4 is built on Thunderbolt 3's protocol, implementing a subset of its mandatory features

- Thunderbolt 4 is a strict profile of USB4 (all optional features made mandatory)

- USB4 v2 introduced 80 Gbps signaling

- Thunderbolt 5 is a strict profile of USB4 v2 (again, optional features made mandatory)

reply
upvoteby Neywiny14 hours ago|
prev|
next
[-]
I don't see why it would. Thunderbolt is not a USB standard
reply
upvoteby aleph_minus_one14 hours ago|
parent|
next
[-]
> Thunderbolt is not a USB standard

Concerning Thunderbolt 3: USB4 is based on the Thunderbolt 3 protocol [1].

Concerning Thunderbolt 4: "In July 2020 Intel announced Thunderbolt 4 as an implementation of USB4 40 Gbit/s with additional requirements, such as mandatory backward compatibility to Thunderbolt 3 and requirement for smaller notebooks to support being charged over Thunderbolt 4 ports.[14] Publications such as AnandTech described Thunderbolt 4 as "superset of TB3 and USB4" and "able to accept TB4, TB3, USB4, and USB 3/2/1 connections"." [2]

Concerning Thunderbolt 5: Intel considers Thunderbolt 5 as an implementation of USB4 Version 2.0. [3]

[1] https://en.wikipedia.org/w/index.php?title=USB4&oldid=134742...

[2] https://en.wikipedia.org/w/index.php?title=USB4&oldid=134742...

[3] https://en.wikipedia.org/w/index.php?title=USB4&oldid=134742...

reply
upvoteby Kirby6414 hours ago|
parent|
prev|
next
[-]
Thunderbolt 5 and USB4v2 are the same thing now. They both support 80gbps and pcie pass through.
reply
upvoteby aleph_minus_one14 hours ago|
parent|
[-]
> Thunderbolt 5 and USB4v2 are the same thing now. They both support 80gbps and pcie pass through.

Not completely true: Thunderbolt 5 demands some capabilities that are optional for USB4v2.

reply
upvoteby Kirby6414 hours ago|
parent|
[-]
From a protocol/bandwidth level, it’s essentially the same though. Thunderbolt 5 has some more guarantees for power and display, but the data rate of the two is the same.
reply
upvoteby stevex14 hours ago|
parent|
prev|
[-]
Doesn't it run over a USB-C shaped wire? If you're trying to understand things that plug into USB-shaped ports it seems at least worth mentioning.
reply
upvoteby DiabloD314 hours ago|
parent|
[-]
To be fair: You should refer to these as Type-C cables, as they carry things that are not USB protocol.

The sole exception should be made for "charge only" cables, which can, and should, be referred to as "wired for USB 2.0". These cables "shouldn't" exist, but I also don't want to buy a $30 cable just to charge my phone.

reply
upvoteby stackghost14 hours ago|
prev|
[-]
Thunderbolt 5 is basically just PCI Express, power delivery, and DisplayPort over the same cable, which for reasons passing understanding is terminated with a USB-C connector.

I think most of those cables will also support USB the protocol.

reply