Aries 7 PCIe Smart RetimerAries 7 PCIe Smart Retimer

Aries PCIe® Smart Retimers

The Industry’s First PCIe 7 Retimer

Download Portfolio Brief

The Gold Standard for PCIe Connectivity

  • Industry’s first PCIe 7 retimer supporting 128 GT/s data rates
  • Purpose-built to solve PCIe/CXL® signal integrity challenges for AI
  • Extends end-to-end channel reach by 40+ dB for complex topologies
  • Advanced telemetry with COSMOS link intelligence software suite
  • Validated across leading CPUs and GPUs through our Cloud-Scale Interop Lab

Nothing Out of Reach

Close the Toughest Channels

Extending Industry-Leading Signal Conditioning to PCIe 7

Robust Signal
Integrity

128 GT/s PAM4 SerDes and DSP customized for demanding AI server channels

Pin-Compatible Footprint

Smart Swap between retimer and redriver without board redesign

Enhanced Diagnostics
& Telemetry

Cosmos Platform Logo – Astera Labs Developer Ecosystem for CXL Products

Extended capabilities through in-band and out-of-band fleet management

Why Choose the Aries Smart Retimer?

Purpose-Built on Years of Learnings From Cloud-Scale Deployments

Robustness

  • Enhanced Signal Integrity 

    Reliable PCIe and CXL signal integrity with maximum reach extension

  • Advanced Error Correction

    FEC monitoring and FLIT-level error correction help maintain reliable PCIe operation across channels

  • Rigorous Interoperability

    Validated for multiple PCIe generations across 200+ root complexes and endpoints

Ease of Use

  • Pin Compatibility

    Same footprint as Aries 7 Smart Redrivers enables designers to Smart Swap to retimers on the same board as channel requirements evolve

  • Broad Platform Support

    PCIe and CXL protocol support across board and cable form factors enable diverse AI and cloud architectures

  • SW-Defined Architecture

    COSMOS software suite enables flexible protocol and state transition control across open PCIe ecosystems

Link Intelligence

  • Rapid Debug

    Built-in protocol analysis, link history, RX lane eye scans, and self-tests accelerate fault isolation

  • Proactive Diagnostics

    Firmware-based link health monitoring helps alert the BMC to emerging performance issues

  • Lifecycle Upgrades

    COSMOS software updates enable new features and capabilities across deployed infrastructure

Use Cases

AI Server Head Node

Deliver high-performance, robust PCIe link connectivity with optimized thermal efficiency for CPU root complex server boards that connect to GPU baseboards…

Modular Infrastructure

Accelerate general purpose server deployments with high performance, robust PCIe connectivity solutions in modular infrastructure based on industry standard…

Resources

Evaluation Kits

Evaluation KitImageDocumentsDescriptionMax PCIe GenPCIe LanesPack QuantityOrderingProduction Status
EQUINOX7-REVAEquinox7Add-InCard-675x550Product BriefAries 7 Smart Retimer CEM Add-In-CardPCIe 7.xx161Contact UsPre-Production
Equinox 6 PCIe® 6.x Riser Cardequinox-6-675x550Product BriefAries 6 Smart Retimer CEM-CEM Add-in-CardPCIe 6.xx161Contact UsPre-Production
Solstice 6 PCIe 6.x Riser CardSolstice 6 PCIe 6.0 Riser Card – Astera Labs Connectivity Product PhotoProduct BriefAries 6 Smart Retimer CEM-MCIO Add-in-CardPCIe 6.xx161Contact UsPre-Production
Equinox 5 PCIe® 5.0 Riser CardAries Equinox PCIe 5.0 Add-In CardProduct BriefAries 5 Smart Retimer CEM-CEM Add-in-CardPCIe 5.0x161Contact UsProduction
COMET-REVAComet Board ImageProduct BriefAstera Labs USB-to-I2C Communication Module––1Contact UsProduction

Ordering Information

Part NumberRetimer GenPCIe/CXLLanesCompatibility
PT716*4thPCIe 7.0/CXL 3.0 16Seamless hardware and software upgradability utilizing industry standard footprints and COSMOS
PT708*4thPCIe 7.0/CXL 3.08Seamless hardware and software upgradability utilizing industry standard footprints and COSMOS
PT608* 3rdPCIe 6.x/CXL 3.x 8Seamless hardware and software upgradability utilizing industry standard footprints and COSMOS
PT616*3rd CIe 6.x/CXL 3.x16Seamless hardware and software upgradability utilizing industry standard footprints and COSMOS
PT508*2ndPCIe 5.0/CXL 2.08Seamless hardware and software upgradability utilizing industry standard footprints and COSMOS
PT516*2nd PCIe 5.0/CXL 2.016Seamless hardware and software upgradability utilizing industry standard footprints and COSMOS
PT408*1st PCIe 4.08Seamless hardware and software upgradability utilizing industry standard footprints and COSMOS
PT416*1stPCIe 4.016Seamless hardware and software upgradability utilizing industry standard footprints and COSMOS

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