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Patrick Zhou's avatar

I don’t have deep expertise in SerDes, as it goes too deep into intricate details of networking devices. I think you know that as its name suggests, SerDes, or Serializer/Deserializer, is used to convert data between serial and parallel formats. The serial format helps reduce signal interference between channels, supports long-distance transmission, and minimizes the number of I/O pins needed (simplifying the network structure). SerDes is commonly used in networking devices like switches (as well as optical modules and NICs). Key switch technology providers, incl. Broadcom, Marvell, Macom, Intel, and Nvidia (through Mellanox), offer this technology.

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Michael J. Fox's avatar

Not a bad report, some info is outdated though. Also note no 1.6T modules will ship in volume until the CX8 NIC and Quantum 3 Infiniband switch ships along with the GB300 in 2H2025. There is no 1.6T associated with the B200, nor any other application until Tomahawk 6 ships in late 2026.

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