MMS4A20-XM800 Nvidia 800GBPS OSFP DR4 MPO APC 1310nm Transceiver

Product Overview of Nvidia 800GBPS Transceiver

The Nvidia MMS4A20-XM800 represents a leap in high‑density optical connectivity, purpose‑built for the most demanding AI fabric and cloud data center cores. As a 1‑port 800 Gigabit OSFP transceiver, it utilizes four parallel single‑mode fiber lanes within a DR4 (400GBASE‑DR4 derivative) optical architecture, achieving 800 Gbps full‑duplex transmission over standard OSFP flat‑top shells. Designed for the NVIDIA Quantum‑2 InfiniBand and Spectrum‑4 Ethernet switch platforms, this module integrates a 1310 nm wavelength grid, MPO‑12 APC connector, and advanced DSP technology. 

General Information

• Manufacturer: Nvidia
• Part Number: MMS4A20-XM800
• Product Type: SMF Optical Transceiver

Technical Highlights

• 800G single‑mode optical transceiver
• Four channels with advanced optical modulation
• 1310nm laser wavelength for stable performance
• Flat‑top OSFP riding heat sink design
• Single MPO‑12/APC optical connector
• Hot‑pluggable interface for quick deployment

Performance Metrics

Reach and Range

• Maximum transmission distance: 500 meters
• Reliable signal integrity across extended fiber runs

Power Efficiency

• 18W maximum power consumption
• 2W low‑power operating mode
• Single 3V power supply requirement

Compliance and Safety

• OSFPMSA.org compliance
• RoHS compliant for environmental safety
• Supports CMIS 4.0 management functions

Laser Safety

• Class 1 laser safety rating
• Secure firmware boot and update features

Design Advantages

• Integrated heat sink for optimal cooling
• Flat‑top connector design for streamlined

Operational Benefits

• High‑speed data throughput
• Energy‑efficient architecture
• Enhanced reliability for enterprise networking

Deployment Scenarios

• Data center interconnects
• High‑bandwidth enterprise networks
• Cloud infrastructure scalability

Nvidia MMS4A20-XM800 800GBPS Transceiver

The Nvidia MMS4A20-XM800 1 Port 800Gbps OSFP DR4 MPO APC 1310nm SMF Transceiver represents a high-performance optical connectivity module engineered for next-generation data center, hyperscale infrastructure, artificial intelligence clusters, high-frequency trading environments, and ultra-low-latency enterprise networking fabrics. Designed to deliver exceptional bandwidth density and signal integrity, this optical transceiver supports an aggregate throughput of 800 gigabits per second over single-mode fiber infrastructure, enabling massive data transfer capabilities required by modern compute-intensive workloads. Built to align with OSFP standards, the module ensures interoperability within advanced networking ecosystems while supporting industry-standard interfaces and compliance frameworks required for high-speed Ethernet and InfiniBand deployments.

High-Speed 800Gbps Optical Performance Architecture

Advanced PAM4 Modulation Technology

The transceiver utilizes Pulse Amplitude Modulation with four levels to efficiently transmit high-density data streams across optical fiber channels. PAM4 signaling allows each optical lane to transmit twice the data compared to traditional NRZ modulation, making it possible for the module to achieve 800Gbps throughput using fewer optical lanes and reduced power consumption. This modulation approach enhances spectral efficiency while maintaining reliable transmission accuracy across long-distance single-mode fiber links.

DR4 Optical Interface

DR4 architecture indicates the module operates across four parallel optical channels optimized for data center reach requirements. Each lane supports high-speed transmission with precise wavelength control around 1310nm, ensuring signal stability, reduced dispersion, and consistent optical performance. The DR4 interface is specifically optimized for short-to-medium reach applications typical in hyperscale data center interconnects where high throughput and reliability are essential.

Single-Mode Fiber Transmission Precision

Support for single-mode fiber enables the module to transmit data over extended distances while minimizing attenuation and signal distortion. Single-mode fiber infrastructure provides a narrower core diameter, which reduces modal dispersion and enables precise optical signal propagation. This ensures that high-speed signals maintain integrity even under heavy traffic loads and demanding environmental conditions.

OSFP Form Factor

Compact High-Density

The MMS4A20-XM800 OSFP form factor integrates advanced thermal management, signal integrity shielding, and electrical efficiency into a compact footprint. Despite its high throughput capability, the module maintains optimized dimensions that allow dense port configurations in switches, routers, and AI networking fabrics. This enables operators to scale bandwidth without increasing rack space consumption.

Thermal Dissipation and Cooling Efficiency

High-speed optical modules generate significant heat during operation, and this model incorporates enhanced heat sink structures and optimized airflow channels to ensure stable operating temperatures. Efficient thermal dissipation prevents signal degradation, reduces error rates, and extends hardware lifespan, which is crucial in environments operating continuously under heavy load.

Electrical Interface Compatibility

The module is designed to interface seamlessly with OSFP-compatible cages and host systems. Its electrical interface adheres to strict signal integrity requirements, ensuring minimal insertion loss and reliable high-speed communication between the host device and optical engine. This guarantees consistent performance across supported platforms.

MPO APC Optical Connectivity Interface

Precision Polished Connector Geometry

The MMS4A20-XM800 MPO APC connector integrates an angled physical contact interface that minimizes back reflection and improves return loss performance. This polished geometry ensures high optical efficiency, making it suitable for environments where signal clarity is critical. Reduced reflection enhances transmission stability and contributes to lower bit error rates.

High-Fiber Count Connectivity

The MPO connector supports multiple fibers within a single interface, enabling parallel optical transmission across four channels. This design reduces cable clutter, simplifies installation, and allows data centers to maintain organized cabling infrastructures while supporting extremely high bandwidth requirements.

Reliable Mechanical Alignment

Precision alignment pins and ferrule construction ensure accurate fiber alignment, which is essential for maintaining consistent optical coupling efficiency. This mechanical reliability supports stable performance even during repeated insertion and removal cycles, making the module suitable for environments requiring frequent maintenance or reconfiguration.

1310nm Optical Wavelength Optimization

Low Dispersion Transmission Window

The MMS4A20-XM800 1310nm wavelength operates within a region of the optical spectrum that offers minimal chromatic dispersion for single-mode fiber. This characteristic allows signals to travel with reduced distortion, ensuring that high-speed data packets arrive accurately at their destination. This wavelength selection is ideal for high-speed data center interconnects requiring precise signal timing.

Enhanced Signal Stability

Operating at 1310nm provides improved tolerance to environmental variations such as temperature changes and fiber bending conditions. This stability ensures reliable connectivity even in dense rack environments where cable routing may introduce minor physical stress.

Efficient Optical Power Utilization

The module’s optical engine is engineered to maintain optimal output power levels while minimizing energy consumption. Efficient power utilization reduces thermal output and improves overall system efficiency, which is critical for large-scale deployments with hundreds or thousands of optical links.

Signal Integrity and Error Reduction Mechanisms

Integrated Digital Diagnostic

Digital monitoring capabilities allow real-time tracking of operational parameters such as temperature, voltage, laser bias current, and optical output power. These diagnostics enable administrators to proactively identify performance anomalies and maintain network reliability through predictive maintenance.

Forward Error Correction Support

The module supports advanced error correction techniques that enhance transmission reliability across high-speed links. Forward error correction algorithms detect and correct bit errors without requiring retransmission, ensuring consistent throughput even in challenging network conditions.

Low Bit Error Rate Engineering

Precision optical components and advanced modulation techniques contribute to extremely low bit error rates. Maintaining low error rates is essential for high-performance computing clusters and data-intensive applications where data accuracy is critical.

Compatibility with High-Performance

Integration with High-Bandwidth Switch Architectures

The transceiver is designed to integrate seamlessly with advanced switching platforms supporting 800Gbps ports. Its compliance with OSFP specifications ensures interoperability with modern networking hardware capable of handling ultra-high data rates required for AI, machine learning, and real-time analytics workloads.

Support for Hyperscale Infrastructure

Hyperscale data centers require optical modules capable of delivering massive bandwidth with consistent reliability. This module’s architecture supports such environments by combining high throughput, efficient power usage, and robust signal integrity mechanisms.

Interoperability Standards Compliance

The design adheres to industry optical and electrical interface standards, ensuring compatibility across a wide range of host devices and network platforms. Standards compliance simplifies deployment, reduces configuration complexity, and ensures consistent performance across heterogeneous infrastructure.

Power Efficiency and Operational Stability

Optimized Energy Consumption Profile

Efficient electrical design reduces overall power draw while maintaining full performance capability. Lower energy consumption contributes to reduced operational costs and supports sustainability objectives in large-scale deployments.

Voltage Regulation Systems

Integrated voltage regulation circuits ensure stable electrical supply to sensitive optical components. Stable voltage prevents signal fluctuations and supports consistent performance during varying load conditions.

Continuous Operation Reliability

The module is engineered for continuous operation within enterprise and data center environments. High-quality materials and precision assembly enable long-term reliability, minimizing downtime and maintenance requirements.

Deployment Flexibility and Network Scalability

High Port Density Support

The compact OSFP design enables network administrators to deploy high port densities within limited rack space. This allows infrastructure expansion without increasing physical footprint, supporting scalable network architectures.

Rapid Capability

Plug-and-play functionality simplifies installation procedures, allowing technicians to deploy modules quickly without complex configuration steps. This accelerates network rollout and reduces deployment time.

Bandwidth Capacity

With support for 800Gbps throughput, the module provides sufficient bandwidth headroom for emerging applications and future network upgrades. This future-ready capability protects infrastructure investments by ensuring long-term usability.

Advanced Optical Networking Efficiency

Reduced Latency Transmission

Optimized signal paths and high-speed circuitry minimize latency across optical links. Reduced latency improves responsiveness for real-time applications and enhances overall network performance.

High Throughput Data Streams

The module supports simultaneous high-volume data streams without congestion or packet loss. This capability ensures smooth performance for bandwidth-intensive applications such as cloud computing and large-scale storage replication.

Stable Multi-Channel Operation

Parallel optical lanes operate synchronously to maintain consistent data flow. Stable multi-channel operation ensures balanced signal distribution and prevents performance bottlenecks.