Intel introduces Thunderbolt 4 combining the best of Thunderbolt 3

Intel has announced the Thunderbolt 4 protocol and new Thunderbolt 4 controllers, which build on the capabilities of Thunderbolt 3 and also form the basis for the USB4 spec. Thunderbolt 4 offers the same throughput as Thunderbolt 3 along with additional platform and security features while also expanding the Thunderbolt dock ecosystem. Thunderbolt 4 will be compatible all existing USB Type-C and Thunderbolt 3 standards and will be first seen in Tiger Lake-powered laptops later this year.

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The key features are support for USB4 protocol and data rates, a minimum bandwidth requirement of 32 Gbit/s for PCIe link, support for dual 4K displays (DisplayPort 1.4) and Intel VT-d-based direct memory access protection to prevent physical DMA attacks.

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