Scorpio Smart Fabric Switches

Fabric switches for the AI Era

Download Portfolio Brief

Purpose-built portfolio for deploying rack-scale AI platforms at unprecedented pace and scale

  • Improve energy efficiency with maximum performance per watt fabric solutions
  • Increase GPU utilization with predictable, secure and high-performance data flows
  • Maximize server uptime with COSMOS delivering unprecedented data center observability
  • Reduce time to market with flexible software-defined architecture and seamless interoperability

Why Use Scorpio Smart Fabric Switches?

Maximize Utilization

  • High Performance Data Ingest

    With PCIe 6 support and AI-optimized architecture, Scorpio P-Series delivers maximum predictable performance to increase GPU utilization

  • High Performance Scale-up

    With a software-defined architecture, Scorpio X-Series delivers protocol and performance optimization for increased data transfer efficiency

  • Performance Monitoring

    Real-time telemetry data provides valuable insights to optimize performance and improve utilization

Ease-of-Use

  • Purpose-built Board Design

    Small package size with integrated power supply decoupling to enable easier routing

  • Future-proof

    Mix current and next-generation devices on the same platform

  • Seamless Software Integration

    Common COSMOS APIs enable Scorpio to integrate seamlessly into existing infrastructure management solutions that use the widely-deployed Aries Retimers

Increase Uptime

  • Fleet Management

    COSMOS software with deep telemetry and diagnostics for link and device health monitoring enables unprecedented data center observability

  • Quick Debug

    Built-in protocol analyzer with link state history and timestamps, full non-destructive eye scan for RX Lane margining, self-test features to minimize link downtime and accelerate fault isolation

  • Rigorous Interop Testing

    System testing with diverse ecosystem of PCIe hosts and endpoints in our Cloud-Scale Interop Lab minimizes interoperation risk for improved reliability

P-Series and X-Series

Application-specific products built from the ground up for AI servers and AI clusters

Architected for mixed traffic AI head node connectivity (GPU-to-CPU/NIC/SSD)

  • Industry’s first PCIe 6 fabric switch
  • Predictable and high-performance GPU-to-CPU/NIC/SSD data flows
  • High bandwidth and low latency peer-to-peer for GPU data ingest
  • Interoperability with diverse ecosystem of PCIe hosts and endpoints

Architected to deliver highest back-end bandwidth for AI scale-up (GPU-to-GPU)

  • Software-defined architecture enables flexibility for diverse AI accelerators
  • Platform-specific customization for homogeneous GPU scale-up fabrics
  • Protocol and performance optimization for increased data transfer efficiency
  • Expanded reliability and telemetry features for maximum uptime

Features

  • Increased radix:
    Multiple device configurations for compact to large-scale GPU clusters
  • Hyperscale platform-specific protocols:
    Customized interconnect to optimize performance
  • In-network computing:
    In-fabric engines accelerate workloads and enable efficient scaling
  • Hypercast technology:
    Advanced traffic optimization to minimize GPU-to-GPU data overhead
  • Optical connectivity:
    Photonic links for multi-rack scale-up domains with thousands of GPUs

Use Cases

Resources

Ordering Information

SeriesPart #PCIeLanesPackage Size [mm]Status
P-SeriesPF60641L6.x6429×29Production
P-SeriesPF50641L5.x6429×29Production
P-SeriesX6064-1M04Xami MCIO-MCIO Evaluation KitProduction
X-SeriesCustomer SpecificProduction

How Your Hyperscale Data Center Can Overcome the Challenges of Next-Gen AI Infrastructure with Scorpio Smart Fabric Switches

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Scaling the AI Rack: How Astera Labs Is Approaching Optics for Scale-Up

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Astera Labs Reports Fourth Quarter and Full Year 2025 Financial Results

Record quarterly revenue of $270.6 million, up 17% QoQ, and record full-year revenue of $852.5 million, up 115% year-over-yearBroadening Scorpio X-Series smart fabric roadmap to address expanding scale-up market opportunities supporting multiple customers, starting production ramp for lead platformAppointed Desmond Lynch as Chief Financial Officer with Mike Tate transitioning to the… Read more

Astera Labs Expands Global Footprint with New Israel Design Center to Support Growing Demand for AI Connectivity Solutions

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Astera Labs Broadens Scorpio X-Series Smart Fabric Switch Roadmap to Address Expanding Scale-Up Market Opportunities

Scorpio X-Series Begins Initial Production with Merchant Scale-Up Switching Market Estimated to Reach $20 billion by 2030 [1]News Highlights:Developed in collaboration with hyperscalers, Scorpio X-series products are purpose-built to support scale-up networking, and are now shipping in initial production volumesExpanded features will include support for increased radix, platform-specific… Read more

Astera Labs Expands Connectivity Portfolio with Custom Solutions

NVLink Fusion-based custom solutions will be offered to support next-generation heterogenous AI infrastructureSAN JOSE, Calif.—Dec. 2, 2025—Astera Labs, Inc. (Nasdaq: ALAB), a leader in semiconductor-based connectivity solutions for rack-scale AI infrastructure, today announced plans to deliver custom connectivity solutions, a new offering designed to address the increasing complexity… Read more

How We Test – Taurus Interop

Learn how we conduct rigorous interop testing of Taurus Ethernet Smart Cable Modules with a range of hosts, NICs, and switches to ensure seamless deployment and minimize risk. Read more

Aries 6 Smart Cable Module Demo

In this demo video, see how Aries PCIe 6 Smart Cable Modules (SCMs) enable reliable, rack-to-rack PCIe 6 connectivity for AI scale-up infrastructure. Powered by Astera Labs’ COSMOS software suite and Scorpio Fabric Switches, the test platform demonstrates real-time link testing, monitoring, and debugging across four x16 active electrical cables. Learn how Aries 6 SCMs extend reach up to… Read more

COSMOS Explorer: Link Management Tools Demo

Astera Labs’ COSMOS Explorer is a powerful tool for link monitoring, management, and diagnostics. It offers a rich set of system configuration options for you to optimize performance with critical signal quality telemetry such as bit error rate, eye metrics, and link event logs. COSMOS Explorer allows you to modify link settings and get customized diagnostics in one GUI for all of our products.In… Read more