Intel's 800Gbps cables headed to cloud data centers and supercomputers
Intel's pitch for Silicon Photonics. — Intel and several of its partners said they will make 800Gbps cables available in the second half of this year, bringing big speed increases to supercomputers and data centers.
Context & Ripple Effects
Intel's 800Gbps cable announcement extends an interconnect campaign the company has been running for years: back in March 2012 it was pushing faster client links through Thunderbolt built on PCI Express 3.0, and the new Silicon Photonics pitch takes the same bandwidth argument to the other end of the machine — the back-end fabric of supercomputers and cloud data centers, where Intel says 800Gbps cables will be available in the second half of 2014 alongside several partners.
The timing matters for Intel's portfolio mix: the announcement lands weeks after the company publicly announced but then failed to follow through on launching a set-top box for its internet-TV project, making a credible server-side silicon story — confirmed here by both Intel and its partners — a useful counterweight. Pickup was solid but trade-focused, with Gizmodo and The Register carrying the same story on the day.
First-order effects
- Cloud operators and supercomputer builders gain a concrete second-half-2014 option to replace bundles of slower copper or fiber runs with single 800Gbps optical links, cutting cabling complexity and latency inside large clusters.
- Intel's named partners can differentiate their systems with an integrated photonics interconnect, selling bandwidth density against vendors still shipping conventional discrete optics.
Second-order effects
- Discrete optical transceiver and high-speed copper cable vendors face margin pressure if Intel's silicon-photonics approach drives module integration into standard chip manufacturing economics.
- Rival processor and switch makers are pushed to accelerate their own integrated-optics roadmaps or partner for them, tightening the supply base for advanced optical components.
Third-order effects
- If inter-node bandwidth stops being the binding constraint, system design attention shifts to the bottlenecks left behind — memory and compute — favoring disaggregated, rack-scale architectures in which the fabric is assumed to be optical.
- Widespread adoption would shift value in the interconnect market from cable assembly and connectors toward whoever controls laser integration and photonic IP, changing how hyperscalers procure networking hardware.
The trend: Data-center and HPC interconnects are migrating from copper and discrete optics toward photonics integrated on silicon, with Intel positioning itself as the merchant supplier for that transition.