
Thunderbolt 5 Could Reach 80 Gbps According to Leaked Photo
Intel Client Computing Group Executive Vice President & GM Gregory Bryant has recently published and deleted an image that appears to show the specifications of a next-generation Thunderbolt technology. The photo was taken at an Intel R&D facility in Israel and shows a poster highlighting "80G PHY Technology" which signifies that Intel is working on an 80 Gbps physical layer. This speed represents a doubling of the existing Thunderbolt 3/4 which runs at 40 Gbps while still working over a USB-C connection. These speeds can be achieved with novel PAM-3 Pulse Amplitude Modulation technology which allows for 50% more bits to be sent per cycle compared to the NRZ technology currently used while limiting the increased complexity that would be introduced with PAM-4. Intel appears to have a working test chip manufactured on the N6 node at TSMC which is showing promising results however we don't expect this technology to reach consumer devices for some time.