Thunderbolt 4: Everything you need to know

Source: Intel

What y'all demand to know

• Intel has detailed Thunderbolt four, and the new standard has 40Gb/s bandwidth and USB4 integration.
• Changes to the controller sees iii downstream ports, allowing you to use more than accessories with the standard.
• Thunderbolt 4 also has 100W USB PD charging, and approachable charge up to 15W for charging other devices.

Intel made several key changes to Thunderbolt technology over the last three years to brand it more than mainstream. It provided the specification for Thunderbolt iii to the USB Implementers Forum (USB-IF), allowing Thunderbolt to become universally uniform with USB. Thunderbolt three forms the backbone of USB4, and that'due south i of the reasons USB4 has 40Gb/s bandwidth — double that of USB 3.2.

Intel is now introducing Thunderbolt 4, with the new standard offer a few primal features. The bandwidth with Thunderbolt iv is unchanged at 40Gb/due south, but Intel is introducing new controllers that introduce three downstream ports that will share the bandwidth, making information technology that much easier to connect more than accessories. This is a big deal for Thunderbolt docks, because they volition be able to offer more ports.

Intel is also adding support for two 4K monitors or i 8K panel, and the latter is new with Thunderbolt 4. For context, Thunderbolt three could drive upwardly to a 5K monitor, but with 8K displays on the horizon, Intel is making certain its latest spec can handle the extra bandwidth.

Source: Intel

Considering of its universal compatibility, Thunderbolt 4 works with all older generations of USB devices, and the standard uses a USB-C to C cable, making things that much easier for accessory makers to integrate Thunderbolt 4 into their designs.

Intel isn't making a lot of changes here in terms of branding and visibility: Thunderbolt 4 retains the same logo and branding as Thunderbolt iii, with a numeral iv on the cable itself signifying the new standard. On the discipline of cables, Intel is also rolling out two meter cables with Thunderbolt iv, making it only a petty flake easier to use the port for things like charging phones.

Source: Intel

Intel is besides calculation Direct Retentiveness Access protection for vendors to become certification for Thunderbolt 4, and Intel'south slide deck from the conference mentions that it needs Intel VT-d tech. Intel has clarified that Thunderbolt certification will exist available for machines that exercise not feature Intel silicon, so for now, we'll have to expect and see how DMA protection volition be implemented by other vendors.

With USB the ubiquitous standard for PCs, Intel is looking to Thunderbolt 4 to get more than mainstream vendors to add the port to their designs. Intel requires that device vendors add at least one charging port to the downstream ports with Thunderbolt 4, and then you should exist able to charge your notebook and other devices via Thunderbolt 4.

The standard leverages USB PD, and it can handle an incoming charge of 100W, provided the device in question needs a 100W accuse. As for outgoing charge via the Thunderbolt 4 port — for charging your phone or other accessories — the standard goes up to 15W.

Source: Intel

The showtime fix of Thunderbolt iv device controllers based on Intel's 8000 series — the JHL8540 and JHL8340 — will exist debuting in the market old afterward this year, also a device controller that will let accessory makers to include iii downstream Thunderbolt ports.

Intel integrated Thunderbolt 3 into Ice Lake designs, and the vendor says the upcoming Tiger Lake chips will be the outset to offer Thunderbolt 4 out of the box. These designs are slated to debut in the coming months, so we should be hearing more soon.

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Updated February 2022

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Source: https://www.windowscentral.com/intel-thunderbolt-4-official-8k-display

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