Article Overview

Energy-saving optical modules for data centers range from $35 for short-reach QSFP28 modules to $8.5W 800G LPO modules priced competitively, offering substantial power and cost savings.

QSFP28 and SFP/SFP+ Modules

  • QSFP28 Modules (100G): OEM list prices can reach several thousand dollars per module, but compatible third-party options are available from $35 for short-reach SR models up to $280–$780 for LR4/CWDM4 modules depending on reach and vendor support .
  • Low-Power SFP/SFP+ Modules (10G): Typical power consumption ranges from 0.8–1.5 W, with low-power variants reducing consumption by 20–35%, e.g., a 1.2 W module can drop to 0.84 W, translating to measurable OPEX savings in large deployments .

LPO (Linear Pluggable Optics) Modules

  • 400G/800G LPO Modules: Designed for AI/ML and high-density data centers, LPO modules eliminate onboard DSPs, reducing per-port power by up to 50% compared to traditional DSP-based optics .
  • Power Consumption: Typical 400G/800G LPO modules consume 3–5 W per port, while high-end 800G LPO modules like FS's 800G DR8 operate at 8.5 W, roughly 50% lower than DSP-based equivalents .
  • Cost Considerations: While exact pricing varies by vendor and volume, LPO modules are positioned as cost-efficient alternatives to traditional high-speed optics, offering both energy and thermal management benefits .

Practical Implications for Data Centers

  • Energy Savings: Deploying low-power or LPO modules can significantly reduce electricity costs and cooling requirements, especially in hyperscale or AI-focused facilities.
  • Operational Efficiency: Lower power draw allows for denser rack deployments and improved PUE (Power Usage Effectiveness).
  • Vendor Options: Multiple third-party suppliers provide modules compatible with standard switch platforms, often at substantially lower prices than OEM-branded modules .

Summary Price Ranges (2026 Benchmarks)

Module TypeTypical PowerPrice Range
QSFP28 SR1–1.5 W$35–$100
QSFP28 LR4/CWDM41–2 W$280–$780
SFP/SFP+ Low-Power0.8–1.2 W$50–$150
400G LPO3–5 WVendor-dependent, competitive with DSP optics
800G LPO DR88.5 WPremium AI/HPC pricing, lower than DSP-based 800G

By selecting energy-efficient optical modules, data centers can achieve substantial OPEX reductions, improve sustainability, and maintain high-speed interconnect performance without major architectural changes .

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