Arrow Lake desktop CPUs will apparently come with support for Thunderbolt 5, a first, per a leak of internal Intel papers courtesy of @yuuki_ans, a leaker with an impeccable track record. Although the hardware leaker has since deleted their post that contained screenshots of the documents, we saved them prior to their deletion.
The leaked documents included a look at the PCIe lane map for Arrow Lake, which includes an explicit mention of Barlow Ridge, the name of the Thunderbolt 5 controller that Intel introduced last September. Barlow Ridge is equipped with four PCIe 4.0 lanes, giving it 80Gbps worth of bandwidth in both directions, twice that of both Thunderbolt 3 and Thunderbolt 4. Additionally, Barlow Ridge can do 120Gbps in one direction and 40Gbps in another for special circumstances where that would improve performance.
