Nvidia Unveils Spectrum-6 Ethernet Switch With 102.4Tbps Capacity for Vera Rubin Platform
Nvidia introduced Spectrum-6, its next-generation Ethernet switch for the Vera Rubin platform, delivering 102.4Tbps of switching capacity designed to connect hundreds of thousands of GPUs.
The switch works with the ConnectX-9 SuperNIC and supports pluggable and co-packaged optics alongside liquid-cooled designs, reflecting a sector shift toward network bandwidth and power efficiency. Microsoft, CoreWeave, Nebius, SpaceXAI and Tesla are named as early adopters, though the company noted deployments are largely planned or in early stages rather than confirmed commercial rollouts. Performance metrics cited in the announcement remain vendor-reported figures pending independent verification.
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@photoncap--> The key signal is that AI infrastructure is no longer constrained by GPU compute alone. As clusters scale to hundreds of thousands of accelerators, performance increasingly depends on GPU-to-GPU communication, network bandwidth and powe