Co-Packaged Optics Index
Primary-source bandwidth and power index for co-packaged optics in AI clusters
Co-packaged optics (CPO) places the optical engine beside a switch ASIC or accelerator so the electrical path stays short. This index lists published bandwidth, port, and power figures for AI-cluster interconnects, and OIF agreements only where the cited page states them. Figures were retrieved on 19 October 2026 from vendor and OIF primary pages.
60-Second Technical Overview & Benchmark Walkthrough
Verified Co-Packaged Optics Index Matrix (14 of 14 Tracked)
Backed by SQLite warehouse (warehouse/warehouse.db) · Last 30 days sensor verified
| Entity / Implementation | Organization | Status | Key Technical Metric | Governance / License | Verification |
|---|---|---|---|---|---|
| TH6-Davisson Switch Broadcom states TH6-Davisson at 102.4 Tbps, with 16 engines of 6.4 Tbps and 200 Gbps per link. | Broadcom | Sampling BCM78919 | 102.4 Tbps | Broadcom product | reported |
| TH5-Bailly Switch Broadcom states Bailly at 51.2 Tbps, with eight 6.4 Tbps engines and 128 ports of 400G FR4. | Broadcom | Delivered | 51.2 Tbps | Broadcom product | reported |
| Bailly 6.4T Engine Engine Broadcom lists 6.4T-FR4 Bailly SCIP optical engines with its fiber connector on the 51.2 Tbps CPO switch. | Broadcom | Delivered | 6.4 Tbps FR4 | Broadcom product | reported |
| Spectrum SN6800 Switch NVIDIA states liquid-cooled Spectrum SN6800 at 409.6 Tb/s across 512 ports of 800 Gb/s. | NVIDIA | Planned H2 2026 | 409.6 Tb/s | NVIDIA product | reported |
| Spectrum SN6810 Switch NVIDIA states liquid-cooled Spectrum SN6810 at 102.4 Tb/s across 128 ports of 800 Gb/s. | NVIDIA | Planned H2 2026 | 102.4 Tb/s | NVIDIA product | reported |
| Quantum-X Photonics Switch NVIDIA states Quantum-X at 115 Tb/s on 144 ports of 800 Gb/s, plus 14.4 teraflops of SHARP. | NVIDIA | Planned early 2026 | 115 Tb/s | NVIDIA product | reported |
| Vesta 200 6.4T Engine Ciena states Vesta 200 6.4T CPX as a 200G/lane pluggable CPO engine for 100T and 200T ASICs. | Ciena | Unveiled | 6.4T, 200G/lane | Ciena product | reported |
| OIF 3.2T CPO Module Standard The OIF 3.2 Tb/s CPO module IA sets 8x400G FR4 or DR4 optics and 32 lanes of CEI-112G-XSR. | OIF | IA 01.0 (2023-03-29) | 3.2 Tb/s module | OIF Implementation Agreement | verified |
| OIF 112G RTLR Standard OIF EEI-112G-RTLR sets a 112 Gb/s PAM4 chip-to-module link from 36 to 56 GSym/s. | OIF | IA 01.0 (2025-10-01) | 112 Gb/s PAM4 | OIF Implementation Agreement | verified |
| TSMC 3D-Stacked CPO Foundry TSMC states 200 Gbs optical modulation and greater than 99% 3D stacking yield on CPO samples. | TSMC | Engineering samples | 200 Gbs modulation | TSMC technology page | reported |
| Ayar TeraPHY Chiplet Ayar Labs labels TeraPHY at 8 Tbps bidirectional; the same page also lists 4 Tbps per chiplet. | Ayar Labs | Preliminary | 8 Tbps bidirectional | Ayar Labs product | reported |
| Ranovus Odin Engine Ranovus states ODIN scales from 800 Gbps to 3.2 Tbps using a 100 Gbps-per-lambda photonic engine. | Ranovus | Announced | 800 Gbps to 3.2 Tbps | Ranovus product | reported |
| Marvell 6.4T SiPho Engine Marvell states a 6.4T SiPho engine with 32 channels of 200G and 30% lower power per bit than 100G. | Marvell | Customer evaluation | 6.4T, 32x200G | Marvell product | reported |
| Photonic Fabric Gen1 Chiplet Celestial AI slides state a Gen1 Photonic Fabric chiplet at 14.4 Tbps and a module at 7.2 Tb/s. | Celestial AI | Hot Interconnects 2025 | 14.4 Tbps Gen1 | Celestial AI public slides | reported |
Featured Head-to-Head Comparisons
Every pair of the 14 records (91 total pairs) has a static comparison page. These 6 are the highest-intent matches.
Frequently Asked Questions
What is co-packaged optics in this index?
Co-packaged optics places the optical engine in the same package as a switch ASIC or accelerator so the electrical path stays short. Every bandwidth, port, and power figure on cpoindex.dev is copied from the cited vendor or OIF page and was retrieved on 2026-10-19.
What capacity does Broadcom state for TH6-Davisson?
Broadcom's 8 October 2025 release states 102.4 Tbps of optically enabled switching, 16 Davisson DR engines at 6.4 Tbps each, and 200 Gbps per link. The availability line says BCM78919 is sampling to early access customers, while the lede says the switch is now shipping.
What bandwidth does NVIDIA state for its CPO switches?
NVIDIA's 18 August 2025 blog states Spectrum SN6810 at 102.4 Tb/s with 128 ports of 800 Gb/s, Spectrum SN6800 at 409.6 Tb/s with 512 ports of 800 Gb/s, and Quantum-X Photonics at 115 Tb/s across 144 ports of 800 Gb/s.
What does the OIF 3.2 Tb/s CPO module agreement specify?
OIF-Co-Packaging-3.2T-Module-01.0, dated 29 March 2023, specifies a 3.2 Tb/s module with 8x400GBASE-DR4 or FR4 optics and a host side of 32 lanes at 106.25 Gb/s meeting CEI-112G-XSR. Sixteen modules are described as building blocks for a 51.2 Tb/s switch.
Which rows are verified rather than reported?
Verified is used when the figure is taken from an OIF implementation-agreement PDF: the 3.2 Tb/s CPO module and the 112 Gb/s RTLR interface. Reported is used for vendor releases, the NVIDIA blog, the TSMC technology page, the Ayar Labs product page, and the Celestial AI conference slides.
Can agents download the CPO dataset?
Yes. The dataset is at https://cpoindex.dev/data/dataset.json and https://cpoindex.dev/data/dataset.csv. The ARD v1.0 manifest is at https://cpoindex.dev/.well-known/ard.json.