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USB-IF publishes the USB4 specifications - Thunderbolt for the masses

Expect a 2x speed boost over USB 3.2

USB-IF publishes the USB4 specifications - Thunderbolt for the masses

USB-IF publishes the USB4 specifications - Thunderbolt for the masses

Earlier this year, the USB Promoter Group announced that Intel contributed their Thunderbolt 3 technology to create the next iteration of USB, USB4. This move, in effect, brings Thunderbolt 3 into the USB family, creating a standard that offers a 2x bandwidth boost over USB 3.2 (Gen2X2) while also offering the prospect of Thunderbolt speeds to a wider range of devices. 
  
USB4 will be backwards compatible with USB 3.1, USB 2.0 and Thunderbolt 3, offering up to 40Gbps of bandwidth to users. USB4 will utilise the USB Type-C interface, just like Thunderbolt 3. USB4 will not be available via USB Type-A connectors. 

Now, the USB Implementors Forum, USB IF, have now officially published the specifications of USB4. This means that it is only a matter of time before we see USB4 compliant devices hit store shelves. Given USB4's similarities to Thunderbolt 3, USB4 is expected to come to market a lot sooner than previous USB standards.

Starting with Ice Lake, an upcoming 10nm processor from Intel, the company plans to integrate Thunderbolt 3.0 directly onto their processor. This will likely make Intel the first CPU manufacturer to support USB4, a factor which will place AMD at a disadvantage until they can offer USB4 support in their devices. At this time it is unknown if Ice Lake will support USB4, as its similarities with Thunderbolt 3 could enable a form of inter-compatibility. 

USB-IF publishes the USB4 specifications - Thunderbolt for the masses  

More information about USB4 is available here

You can join the discussion on USB-IF releasing their USB4 specifications on the OC3D Forums

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Most Recent Comments

03-09-2019, 13:06:02

tgrech
Is ThunderBolt spec support a requirement? Given no controller compatible with that spec would fit in the power budget of a phone for a fair few years, this one seems like it will be on ice for 5 years in anything but Ultrabooks with its Type-C requirement, maybe a couple of ports on high end motherboards instead of the 3.2gen2 ports now and then. But even tablet-orientated controllers can't hit the bandwidth of USB3.0 gen1 without throttling atm.Quote

03-09-2019, 13:27:24

WYP
Quote:
Originally Posted by tgrech View Post
Is ThunderBolt spec support a requirement? Given no controller compatible with that spec would fit in the power budget of a phone for a fair few years, this one seems like it will be on ice for 5 years in anything but Ultrabooks with its Type-C requirement, maybe a couple of ports on high end motherboards instead of the 3.2gen2 ports now and then. But even tablet-orientated controllers can't hit the bandwidth of USB3.0 gen1 without throttling atm.
From USB-IF press release. At a minimum, it supports Thunderbolt 3 on the speed side of the equation.

Key characteristics of the USB4 solution include:

• Two-lane operation using existing USB Type-C® cables and up to 40Gbps operation
over 40Gbps certified cables
• Multiple data and display protocols that efficiently share the maximum aggregate
bandwidth
• Backward compatibility with USB 3.2, USB 2.0 and Thunderbolt 3Quote

03-09-2019, 13:41:34

NeverBackDown
Now if only the USB IF can keep sensible naming conventions.Quote

03-09-2019, 13:41:38

tgrech
I see, it's a marketing exercise, I guess a rebrand of TB3 without the royalty issues is a good step forward, albeit one Intel promised 2 years ago, and now done in a way that has artificially held back third party controllers, meaning their power use probably won't even be non-Intel "ultra portable laptop" ready till 2021. Give them plenty of times to iron out all of TB's technical issues.Quote
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