Specifications
Orderable Part Number
PT6162
Family
Aries Smart DSP Retimers
Generation
3rd generation (Aries 6)
Max PCIe Generation
PCIe 6.x
CXL Support
CXL 3.x
Lanes
x16
Status
Production
Function
Smart DSP retimer — signal integrity restoration
Typical Use
Rack-scale AI/ML fabrics, GPU-to-GPU links, CXL memory expansion
Companion Software
COSMOS rack management
Astera Labs Aries retimer portfolio
| Orderable P/N | Generation | Max PCIe Gen | Lanes | Status |
|---|---|---|---|---|
| PT6082 | 3rd (Aries 6) | PCIe 6.x / CXL 3.x | x8 | Pre-production |
| PT6161 | 3rd (Aries 6) | PCIe 6.x / CXL 3.x | x16 | Pre-production |
| PT6162 | 3rd (Aries 6) | PCIe 6.x / CXL 3.x | x16 | Production |
| PT5081 | 2nd (Aries 5) | PCIe 5.0 / CXL 2.0 | x8 | Production |
| PT5161 | 2nd (Aries 5) | PCIe 5.0 / CXL 2.0 | x16 | Production |
| PT4080 | 1st | PCIe 4.0 | x8 | Production |
| PT4161 | 1st | PCIe 4.0 | x16 | Production |
Use Case
Once a PCIe link moves to 64 GT/s per lane, trace length and connector count become the limiting factors, so AI racks insert a retimer every few inches of copper. The Aries 6 PT6162 restores signal integrity at 16 lanes for PCIe 6.x and CXL 3.x, and is the production x16 part in the third-generation Aries family — the standard building block for host-to-GPU and GPU-to-switch links in Blackwell-class systems.
Need Astera Labs Aries 6 PCIe 6.x / CXL 3.x Smart DSP Retimer (x16)?
Enterprise hardware — configured, tested, deployed. Contact us for pricing and availability.
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