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Intel details Thunderbolt 4: Required DMA protection, longer cables, and more

posted onJuly 8, 2020
by l33tdawg
Wikipedia
Credit: Wikipedia

Intel has outlined what to expect from the new Thunderbolt 4 standard, which is expected to start appearing in consumer devices later this year.

While it won't offer an increase over the 40GB/s that Thunderbolt 3 does, Thunderbolt 4 has steeper minimum requirements than Thunderbolt 3 for devices to claim certification—and that makes some new features and perks standard.

These are the specifications for Thunderbolt 4, according to Intel:

 

  • Double the minimum video and data requirements of Thunderbolt 3
    • Video: Support for two 4K displays or one 8K display.
    • Data: PCIe at 32 Gbps for storage speeds up to 3,000 MBps.
  • Accessories with four Thunderbolt 4 ports
  • Universal 40GB/s cables up to 2 meters in length
  • Required PC charging on at least one computer port.
  • Required PC wake from sleep when computer is connected to a Thunderbolt dock
  • Required Intel VT-d-based direct memory access (DMA) protection
  • USB4 specification compliant

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Intel Hardware

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