1.6TbE Transition to Fundamentally Reshape Data Center Architecture, Co-Packaged Optics Key

August 23, 2026

Futurum Group USA

Overview

Futurum Group forecasts that data centers are transitioning to 1.6TbE, which will fundamentally reshape their architecture, with Co-Packaged Optics (CPO) emerging as a primary interconnect approach to reduce power consumption and heat within switch ASICs. Leading vendors like Broadcom and Marvell aim for initial 1.6TbE silicon samples in late 2026 and mass production by 2027. Hyperscalers are already redesigning floor plans in preparation for this shift.

In Depth

Key Findings

Futurum Group has released an analysis indicating that the data center industry is entering a transition period to 1.6TbE (1.6 Terabit Ethernet), which will fundamentally reshape data center architectures. Central to this transformation is Co-Packaged Optics (CPO), projected to play a critical role as the primary interconnect approach for significantly reducing power consumption and heat generation within switch ASICs.

Technical / Clinical Details

Inevitability of 1.6TbE Transition: The explosive growth of AI workloads dramatically increases demands on data center bandwidth and efficiency. Existing 800GbE technology is increasingly struggling to meet these requirements, making a transition to faster 1.6TbE inevitable.
Role of Co-Packaged Optics (CPO): CPO integrates optical engines within the same package as switch ASICs, drastically shortening electrical signal paths. This minimizes signal loss and substantially reduces power consumption and heat generation within the switch ASIC. This is directly linked to lower cooling costs and improved reliability, especially in high-density AI data centers.
Key Vendor Activities: Leading switch ASIC vendors, including Broadcom and Marvell, are already developing 1.6TbE silicon, targeting initial sample shipments in late 2026 and mass production by 2027. This is a clear indication that the entire industry is accelerating towards the adoption of 1.6TbE and CPO technologies.
Data Center Design Reshaping: Hyperscalers and AI-focused colocation providers are beginning to redesign existing floor plans to accommodate the constraints associated with 1.6TbE deployment. This includes adopting shorter cable runs and distributed switching topologies, requiring extensive changes from physical layout to operational methods.

Background & Context

As AI model sizes expand and data processing volumes increase exponentially, data center network infrastructure faces new bottlenecks. Traditional pluggable optical transceivers are limited by power consumption and form factor, making it difficult to support the scalability of future AI applications. CPO is emerging as a key technology to overcome these challenges and enable higher-performance, energy-efficient AI data centers, garnering significant industry attention. Futurum Group’s analysis suggests that this technological shift is not merely a product upgrade but a fundamental change in data center design philosophy.

Strategic Significance & Outlook

The transition to 1.6TbE and CPO will bring dramatic changes to the data center industry in the coming years. This will enable AI workloads to run faster and more efficiently, opening up new possibilities for AI application and service development. Data center operators will find that adapting to this new architecture is crucial for establishing a competitive advantage, leading to accelerated strategic investments and infrastructure upgrades. This technological innovation will strengthen the foundation supporting the growth of the entire digital economy.

Source: https://futurumgroup.com/insights/the-1-6tbe-transition-will-reshape-data-center-architecture-from-the-ground-up/

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