800G OSFP-DR8: $1,100-1,400 (volume pricing for 1000+ units) 800G QSFP-DD-DR8: $1,000-1,300 (volume pricing) 800G OSFP-FR4: $1,500-1,900 (longer reach, more complex optics) 800G LPO (Linear Pluggable Optics): $700-900 (no DSP, lower cost) 400G QSFP-DD:. 800G OSFP-DR8: $1,100-1,400 (volume pricing for 1000+ units) 800G QSFP-DD-DR8: $1,000-1,300 (volume pricing) 800G OSFP-FR4: $1,500-1,900 (longer reach, more complex optics) 800G LPO (Linear Pluggable Optics): $700-900 (no DSP, lower cost) 400G QSFP-DD:. The total cost for the optical transceivers amounted to eight million dollars. His director had asked for a budget estimate for a data center-wide 400G system upgrade. Calculating the costs across 1,200 switch ports using standard Cisco list pricing, David watched the total QSFP-DD spend multiply. Basic electronic chips in a module, such as DSPs and drivers for the transmitter, and TIAs for the receiver, are essential for 400G, 800G, or silicon/non-silicon modules. Typically, 800G silicon photonics optical modules have two silicon photonics chips on the transmitter side, each with four. This guide provides a deep-dive technical comparison of the three dominant 800G module form factors— SR8, DR8, and 2xFR4 —analyzing their trade-offs in cost, power consumption, and link budget. We will also explore how emerging technologies like LPO (Linear Pluggable Optics) and CPO (Co-Packaged. According to recent data from Cignal AI, the [800G optical module] segment is expected to be the fastest-growing through 2025. But for procurement leaders, the real question isn't whether to deploy 800G—it's which technology foundation to choose. EML For. While technical performance dominates discussions about 800G optical modules, cost considerations ultimately determine deployment decisions.