Project Quotation LPO Optical Module QSFP-DD

QSFP-DD LPO modules offer high-bandwidth, low-latency optical connectivity for 400G and 800G data center applications, with pricing ranging from $1,400 to over $130,000 depending on module type and reach.

Overview of QSFP-DD LPO Modules

QSFP-DD (Quad Small Form-Factor Pluggable Double Density) Linear Pluggable Optical (LPO) transceivers are designed for high-speed, low-latency data communication, supporting PCIe Gen 5.0 over optical links. They enable scalable server disaggregation, rack-to-rack interconnects, and are ideal for AI/ML, HPC, and modern data center expansion . LPO modules operate without a DSP, leveraging host ASIC processing for power efficiency and minimal latency .

Module Types and Specifications

• SR8 (Short-Reach): Supports 8 × 100 Gb/s PAM4 channels over multimode fiber (MMF) up to 50 meters, optimized for in-rack and cross-row connectivity. Power consumption is typically around 5.5 W .
• DR4/FR4 (Medium-Reach): Bridge connections between data center rows or campus links, offering moderate reach with competitive pricing.
• LR4/ZR/ZR+ (Long-Reach/Coherent): Designed for long-haul DCI or metro/regional interconnects. LR4 modules can exceed $10,000, while ZR+ coherent optics may surpass $130,000 for OEM units . All modules comply with IEEE 802.3db and CMIS 4.0 standards and are compatible with linear-drive host systems supporting CEI-112G-LINEAR-PAM4 electrical interfaces .

Pricing Considerations

• 400G SR8 Modules: Third-party vendors typically price these between $1,400 and $1,800, making them cost-effective for standard data center deployments .
• 800G Modules: Pricing is still stabilizing; third-party options are generally 60–70% of OEM list prices, with OEM modules preferred for critical production workloads due to firmware and DOM integration reliability .
• Volume Discounts: Many vendors offer tiered pricing for bulk purchases, which can significantly reduce the total cost of ownership (TCO) over a 3-year period .

Procurement Recommendations

1. Define Reach Requirements: Select SR8 for short-reach, LR4/ZR/ZR+ for long-haul or DCI applications.
2. Consider OEM vs Third-Party: Third-party modules offer cost savings, but OEM modules may be necessary for early 800G deployments or critical applications.
3. Check Host Compatibility: Ensure the transceiver is compatible with your switch or server's linear-drive interface.
4. Plan for Thermal Management: QSFP-DD modules can dissipate up to 12 W; adequate cooling is essential for high-density deployments .

Example Quotation Summary

This summary provides a baseline for project budgeting, allowing you to select modules based on reach, power, and cost requirements while considering vendor options and TCO implications.