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PCI-SIG announces CopperLink cables for PCIe 5.0 and PCIe 6.0 devices

OCulink cable (Image Source: Amazon)
OCulink cable (Image Source: Amazon)
Primarily aimed at the HPC sector, the new CopperLink internal and external cables for PCIe 5.0 / 6.0 devices are expected to launch sometime next year. PCI-SIG has not yet finished the specs, but the bandwidth provided by such cables is supposed to be similar to what Thunderbolt 5 offers.

PCI-SIG, the organization that provides specs for all PCIe developments, has announced a new CopperLink naming scheme for upcoming PCIe internal and external cables at the SC23 event dedicated to high performance computing, networking, and storage solutions. The new type of cable will interconnect PCIe 5.0 and 6.0 devices, with the final specifications expected to release in Q1 2024.

As suggested by the announcement itself, this type of cable appears to be targeted at HPC solutions. Apparently, the OCulink (Optical Copper Link) cables offered by PCI-SIG may prove to be insufficient for PCIe 5.0 and 6.0 speeds, since these have a maximum bandwidth of 63 Gbps. CopperLink should offer increased speeds, most likely similar to Thunderbolt 5 specs, so up to 120 Gbps. However, Videocardz points out that PCI-SIG is also working on providing specs for fiber-based cables with even higher speeds, yet these will not be ready before the adoption of optical motherboard connectors.

Due to the lack of specs for the new CopperLink cables, there is some speculation that PCI-SIG may be looking to provide an alternative for the 12VHPWR Gen 5.0 standard that connects GPUs to PSUs. Even if this is the case, such cables may not hit the consumer market too soon, as PCI-SIG is focusing on the HPC sector for now and the first PCIe 5.0 GPUs from Nvidia and AMD are still 1 year away.


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> Notebook / Laptop Reviews and News > News > News Archive > Newsarchive 2023 11 > PCI-SIG announces CopperLink cables for PCIe 5.0 and PCIe 6.0 devices
Bogdan Solca, 2023-11-15 (Update: 2023-11-15)