Optical layer
400G vs 800G Economics
Per-Gbps cost, power, and rack-density tradeoff for 400G vs 800G fabric in mid-2026.
The engineer question
Is 800G cheaper per Gbps than 400G right now?
Status · Coming soon
Where the data lives today
The current quarter snapshot is generated by the V17 Phase D Product Landscape module and lives on the parent topic page. The interactive comparator below ships once a structured spec datasource is wired.
View Optical product landscape →Inputs
- Volume tier (modules / quarter)
- Reach class
- Existing switch fleet
Outputs
- $/Gbps
- Watts/Gbps
- Rack density delta
Related tools in the Optical layer
QSFP-DD vs OSFP
Side-by-side decision matrix for QSFP-DD vs OSFP form factor across 400G / 800G / 1.6T.
Coherent vs Lumentum
Two-supplier head-to-head across product line, capacity, customer wins, and recent filings.
DWDM Spacing Calculator
Wavelength count and grid spacing required for a target aggregate bandwidth over fiber.