Unlocking High-Speed Networking: A Closer Look at NVIDIA’s 800Gbps Twin-Port OSFP Transceivers

As AI workloads continue to scale and data centers evolve, the demand for high-bandwidth, low-latency interconnects is at an all-time high. NVIDIA, a leader in accelerated computing, addresses this challenge with its 800Gbps Twin-Port OSFP transceivers — essential components for high-performance networking environments.

In this article, we break down and compare four key models: MMS4X00-NS, MMA4Z00-NS, MMA4Z00-NS-FLT, and MMA4X00-NS, highlighting how they meet diverse deployment needs.

Key Differences

• Fiber Type & Reach: MMS4X00-NS and MMA4X00-NS utilize single-mode fiber (SMF) for longer distances up to 100 meters, whereas MMA4Z00-NS and MMA4Z00-NS-FLT use multimode fiber (MMF) suitable for shorter distances up to 50 meters.
• Cooling Design: Finned-top models (MMS4X00-NS, MMA4Z00-NS) are designed for air-cooled environments, while flat-top models (MMA4Z00-NS-FLT, MMA4X00-NS) are intended for liquid-cooled systems.
• Use Case: Choose finned-top variants for traditional air-cooled data centers and flat-top variants for advanced liquid-cooled systems like NVIDIA DGX H100.
• Connector Type: All models feature dual MPO-12/APC connectors, supporting two 400Gbps channels.
• Wavelength: Single-mode transceivers operate at 1310nm, while multimode transceivers operate at 850nm.

Summary Recommendations

• For Long-Reach, Air-Cooled Environments: MMS4X00-NS is ideal, offering 100m reach over single-mode fiber.
• For Short-Reach, Air-Cooled Environments: MMA4Z00-NS is suitable, providing 50m reach over multimode fiber.
• For Long-Reach, Liquid-Cooled Systems: MMA4X00-NS is recommended, combining 100m reach with a flat-top design for immersion cooling.
• For Short-Reach, Liquid-Cooled Systems: MMA4Z00-NS-FLT is appropriate, offering 50m reach with a flat-top design.

Each of these transceivers supports 800Gbps throughput via two 400Gbps channels, utilizing 100G-PAM4 modulation. They are compatible with NVIDIA's Quantum-2 and Spectrum-4 switches, as well as ConnectX-7 adapters and BlueField-3 DPUs.

Want to learn more or find the right fit for your network? Let’s connect and discuss your infrastructure needs.