Powering AI With Seamless Connectivity
Aries Smart DSP Retimers overcome signal integrity issues for PCI Express®(PCIe) 5.0, PCIe 4.0,
and Compute Express Link® (CXL), providing reliable high-speed AI platform connectivity.
Our COnnectivity System Management and Optimization Software (COSMOS) suite provides advanced
diagnostics capabilities (Link, Fleet and RAS) for cloud-scale deployments
![System Diagram System Diagram](https://www.asteralabs.com/wp-content/uploads/2024/02/System-Diagram-2.png)
Highlights
Redefining Connectivity for Cloud and AI Infrastructure
Extend PCIe/CXL Signal Reach
up to 3X
Enabling high-density cloud and AI infrastructure
Advanced Diagnostics With
COSMOS
Fleet, link management and RAS features for large-scale AI system deployments
Interoperable Across
50+endpoints
Stress tested with all major GPU, CPU & Memory vendors
Why Use Aries Smart DSP Retimers?
Robust, easy-to-use, and designed for enterprise fleet management
Robustness
Signal Integrity: Best-in-class SerDes exceeds PCIe specification, supports >36 dB (8 GHz) for both TX and RX, <1 dB (8GHz) package insertion loss, PCIe 5.0 drop-in upgrade
Thermals: Integrated heat spreader and thermally-optimized materials simplify thermal design
Interop Testing: Rigorous system testing with 50+ endpoints and all major Root Complex (Intel, AMD, NVIDIA, etc.)
Ease-of-Use
Total Solution Size: Integrated supply decoupling and AC coupling caps reduce solution size >50% and improve signal quality by avoiding vias
REFCLK: REFCLK repeat feature reduces need for additional CLK buffers
Flexibility: Firmware upgradable through I2C/EEPROM to add features, expose more diagnostics, adjust protocol for misbehaving Endpoints, and more
Fleet Management
Quick Debug: Built-in protocol analyzer with Link state history and timestamps, full non-destructive eye scan for RX Lane margining
Deep Diagnostics: Firmware-driven link health monitoring to alert BMC of any possible link performance issues
System Visibility: The Retimers unique position in the middle of the Link means diagnostic tools can help identify system-level issues before they affect customers
The Difference is Clear
Aries Smart DSP Retimers are a cost-efficient solution to doubling both bandwidth and reach for complex topologies while maintaining low latency.
![aries-pcie50-smart-dsp-retimer Aries Smart Retimer Benefits](https://www.asteralabs.com/wp-content/uploads/2021/01/aries-pcie50-smart-dsp-retimer.png)
PCIe 5.0 Smart DSP Retimer
![generic-vs-aries-retimer Generic PCIe Retimer Issues](https://www.asteralabs.com/wp-content/uploads/2021/01/generic-vs-aries-retimer.png)
Generic PCIe 4.0 Retimer
Use Cases
AI Accelerator Baseboard
![astera_labs_aries_AI_Accelerator_Baseboard@3x_Final astera_labs_aries_AI_Accelerator_Baseboard@3x_Final](https://www.asteralabs.com/wp-content/uploads/2024/03/astera_labs_aries_AI_Accelerator_Baseboard@3x_Final-300x200.png)
Deliver high-performance, robust PCIe link connectivity with optimized thermal efficiency in Universal Baseboard (UBB) designs
AI Server Head Node
![astera_labs_aries_AI_Server_Head_NodeA@3x_Final astera_labs_aries_AI_Server_Head_NodeA@3x_Final](https://www.asteralabs.com/wp-content/uploads/2024/03/astera_labs_aries_AI_Server_Head_NodeA@3x_Final-300x200.png)
Deliver high-performance, robust PCIe link connectivity with optimized thermal efficiency for CPU root complex server boards that connect to GPU baseboards in AI servers
Multi-rack GPU Clustering
![astera_labs_aries_smart_retimer_gfx_C@3x_Final astera_labs_aries_smart_retimer_gfx_C@3x_Final](https://www.asteralabs.com/wp-content/uploads/2024/01/astera_labs_aries_smart_retimer_gfx_C@3x_Final-300x200.png)
Delivering high data throughput for larger AI clusters with multi-rack PCIe connectivity
Application Notes
Videos
Orderable Information
Aries PCIe/CXL Smart DSP Retimers
Orderable Part Number | Documents | Retimer Generation | Max PCIe Gen | PCIe Lanes | Ordering | Status |
---|---|---|---|---|---|---|
PT6082LR | https://www.asteralabs.com/wp-content/uploads/2024/03/2402_Astera_Labs-Aries_Smart_DSP_Retimer_Family-Product_Brief.pdf | 3rd | PCIe 6.x | x 8 | Contact Us, https://www.asteralabs.com/product-details/PT6082LR/ | Sampling |
PT6082LX | https://www.asteralabs.com/wp-content/uploads/2024/03/2402_Astera_Labs-Aries_Smart_DSP_Retimer_Family-Product_Brief.pdf | 3rd | PCIe 6.x / CXL 3.x | x 8 | Contact Us, https://www.asteralabs.com/product-details/PT6082LX/ | Sampling |
PT6162LR | https://www.asteralabs.com/wp-content/uploads/2024/03/2402_Astera_Labs-Aries_Smart_DSP_Retimer_Family-Product_Brief.pdf | 3rd | PCIe 6.x | x 16 | Contact Us, https://www.asteralabs.com/product-details/PT6162LR/ | Sampling |
PT6162LX | https://www.asteralabs.com/wp-content/uploads/2024/03/2402_Astera_Labs-Aries_Smart_DSP_Retimer_Family-Product_Brief.pdf | 3rd | PCIe 6.x / CXL 3.x | x 16 | Contact Us, https://www.asteralabs.com/product-details/PT6162LX/ | Sampling |
PT5082LR | https://www.asteralabs.com/wp-content/uploads/2024/03/2402_Astera_Labs-Aries_Smart_DSP_Retimer_Family-Product_Brief.pdf | 3rd | PCIe 5.0 | x 8 | Contact Us, https://www.asteralabs.com/product-details/PT5082LR/ | Sampling |
PT5082LX | https://www.asteralabs.com/wp-content/uploads/2024/03/2402_Astera_Labs-Aries_Smart_DSP_Retimer_Family-Product_Brief.pdf | 3rd | PCIe 5.0 / CXL 2.0 | x 8 | Contact Us, https://www.asteralabs.com/product-details/PT5082LX/ | Sampling |
PT5162LR | https://www.asteralabs.com/wp-content/uploads/2024/03/2402_Astera_Labs-Aries_Smart_DSP_Retimer_Family-Product_Brief.pdf | 3rd | PCIe 5.0 | x 16 | Contact Us, https://www.asteralabs.com/product-details/PT5162LR/ | Sampling |
PT5162LX | https://www.asteralabs.com/wp-content/uploads/2024/03/2402_Astera_Labs-Aries_Smart_DSP_Retimer_Family-Product_Brief.pdf | 3rd | PCIe 5.0 / CXL 2.0 | x 16 | Contact Us, https://www.asteralabs.com/product-details/PT5162LX/ | Sampling |
PT5081LR | https://www.asteralabs.com/wp-content/uploads/2024/03/2402_Astera_Labs-Aries_Smart_DSP_Retimer_Family-Product_Brief.pdf | 2nd | PCIe 5.0 | x 8 | Contact Us, https://www.asteralabs.com/product-details/PT5081LR/ | Production |
PT5081LX | https://www.asteralabs.com/wp-content/uploads/2024/03/2402_Astera_Labs-Aries_Smart_DSP_Retimer_Family-Product_Brief.pdf | 2nd | PCIe 5.0 / CXL 2.0 | x 8 | Contact Us, https://www.asteralabs.com/product-details/PT5081LX/ | Production |
PT5161LR | https://www.asteralabs.com/wp-content/uploads/2024/03/2402_Astera_Labs-Aries_Smart_DSP_Retimer_Family-Product_Brief.pdf | 2nd | PCIe 5.0 | x 16 | Contact Us, https://www.asteralabs.com/product-details/pt5161lr/ | Production |
PT5161LX | https://www.asteralabs.com/wp-content/uploads/2024/03/2402_Astera_Labs-Aries_Smart_DSP_Retimer_Family-Product_Brief.pdf | 2nd | PCIe 5.0 / CXL 2.0 | x 16 | Contact Us, https://www.asteralabs.com/product-details/pt5161lx/ | Production |
PT4080LR | https://www.asteralabs.com/wp-content/uploads/2024/03/2402_Astera_Labs-Aries_Smart_DSP_Retimer_Family-Product_Brief.pdf | 1st | PCIe 4.0 | x 8 | Contact Us, https://www.asteralabs.com/product-details/pt4080lr/ | Production |
PT4161LR | https://www.asteralabs.com/wp-content/uploads/2024/03/2402_Astera_Labs-Aries_Smart_DSP_Retimer_Family-Product_Brief.pdf | 1st | PCIe 4.0 | x 16 | Contact Us, https://www.asteralabs.com/product-details/pt4161lr/ | Production |
Evaluation Kits
Evaluation Kit | Image | Documents | Description | Max PCIe Gen | PCIe Lanes | Pack Quantity | Ordering | Production Status |
---|---|---|---|---|---|---|---|---|
Equinox 6 PCIe 6.x Riser Card | ![]() | https://www.asteralabs.com/wp-content/uploads/2024/03/2402_Astera_Labs-Aries_Equinox_6_Retimer_CEM_AIC-Product_Brief.pdf | Aries 6 Smart Retimer CEM-CEM Add-in-Card | PCIe 6.x | x 16 | 1 | Contact Us, https://www.asteralabs.com/products/smart-retimers/pcie-cxl-smart-retimers/order-systems/?system=EQUINOX-6 | Sampling |
Solstice 6 PCIe 6.x Riser Card | ![]() | https://www.asteralabs.com/wp-content/uploads/2024/03/2402_Astera_Labs-Aries_Solstice_6_Retimer_MCIO_AIC-Product_Brief.pdf | Aries 6 Smart Retimer CEM-MCIO Add-in-Card | PCIe 6.x | x 16 | 1 | Contact Us, https://www.asteralabs.com/products/smart-retimers/pcie-cxl-smart-retimers/order-systems/?system=SOLSTICE-6 | Sampling |
Equinox 5 PCIe 5.0 Riser Card | ![]() | https://www.asteralabs.com/wp-content/uploads/2020/11/Astera_Labs_Eclipse_Equinox_Product_Brief.pdf | Aries 5 Smart Retimer CEM-CEM Add-in-Card | PCIe 5.0 | x 16 | 1 | Digi-Key, https://www.digikey.com/en/products/detail/astera-labs-inc/EQUINOX-REVA/13982648?s=N4IgTCBcDaIKYEcCuBLAdgewB4gLoF8g; Contact Us, https://www.asteralabs.com/products/smart-retimers/pcie-cxl-smart-retimers/order-systems/?system=EQUINOX-REVA | Production |
COMET-REVA | ![]() | https://www.asteralabs.com/wp-content/uploads/2020/08/Astera_Labs_COMET_Product_Brief.pdf | Astera Labs USB-to-I2C Communication Module | 1 | Digi-Key, https://www.digikey.com/en/products/detail/astera-labs-inc/COMET-REVA/13881175?s=N4IgTCBcDaIMYHsC2BTALgAgIYGc0oCcsMAbLAIxxAF0BfIA; Mouser, https://www.mouser.com/ProductDetail/Astera-Labs/COMET-REVA?qs=%2Fha2pyFadujscaAy75Pb6mldQROydX7z1bYmIMd%252Bpx6QoUJRZnAUzA%3D%3D; Contact Us, https://www.asteralabs.com/order-products/?product=COMET-REVA | Production |
You may also order from our distributors >
FAQ
Have more questions about general topics, such as PCIe 5.0, ordering, quality, etc.? See the full list of FAQs.