Comprehensive Product Overview

The Mellanox MMA4Z00-NS (also known as NVIDIA MMA4Z00-NS) is a cutting-edge 800G twin-port OSFP transceiver built to address the exponential bandwidth demands of modern AI, high-performance computing (HPC), and hyperscale cloud data centers. As a key component of NVIDIA’s end-to-end networking ecosystem, it integrates two independent 400G transceiver engines into a single OSFP form factor, enabling 800Gbps total throughput while maximizing port density.

Operating at 850nm with 100G-PAM4 modulation across 8 parallel channels, the MMA4Z00-NS supports dual 400Gb/s ports (SR8) over multimode fiber (MMF). It reaches 30m on OM3 and 50m on OM4 fiber, ideal for top-of-rack (ToR) to leaf/spine switch connections and short-range server/storage links. The module is available in finned-top (air-cooled) and flat-top (liquid-cooled/DGX H100) variants to suit diverse cooling infrastructures.

Fully compliant with OSFP MSA, CMIS 5.0, IEEE 802.3ck, and InfiniBand NDR standards, the MMA4Z00-NS ensures seamless interoperability with Mellanox Quantum-2 switches, Spectrum-4 switches, and ConnectX-7 OSFP adapters. It features hot-pluggability, DDM/DOM monitoring, and low-power sleep mode (2.0W), delivering robust reliability and energy efficiency for 24/7 mission-critical operations.

Key Features & Business Benefits

• 800G Twin-Port Performance: 2x400Gbps independent ports (SR8) with 8×106.25Gbps PAM4 modulation; delivers 800Gbps aggregate bandwidth to support AI training, HPC, and high-density cloud workloads.
• Dual MPO-12/APC Interfaces: Two 4-channel MPO-12/APC connectors (green for APC); supports 2x400G direct links or 2x200G splitter cables for flexible network design.
• Extended Reach on MMF: 30m (OM3) / 50m (OM4) reach at 850nm VCSEL; eliminates expensive single-mode fiber for short-range (≤50m) data center connections, reducing cabling costs.
• High Port Density: Twin-port design enables 64x400G ports in a 32-OSFP Quantum-2 switch; maximizes rack utilization and reduces switch hardware costs per 400G port.
• Dual-Cooling Compatibility: Finned-top (air-cooled) and flat-top (liquid-cooled/DGX H100) options; adapts to existing or next-gen cooling infrastructures without forklift upgrades.
• Low Power & High Efficiency: 17W max power / 2.0W sleep mode; 3.3V single supply; lowers data center OPEX via reduced power consumption and heat generation.
• Seamless NVIDIA Ecosystem Integration: Optimized for Quantum-2 InfiniBand, Spectrum-4 Ethernet switches, and ConnectX-7 OSFP NICs; ensures end-to-end performance and reliability.
• Robust Monitoring & Compliance: DDM/DOM for real-time parameter tracking; Class 1 laser safety; RoHS compliant; hot-pluggable; meets OSFP MSA/CMIS 5.0 standards for easy deployment and maintenance.

Technical Specifications

Ideal Application Scenarios

• AI & Machine Learning Clusters: High-speed connections between NVIDIA DGX H100 servers and Quantum-2 InfiniBand switches for distributed AI training/inference.
• High-Performance Computing (HPC): Interconnects for HPC clusters, scientific computing, and research labs requiring low-latency, high-bandwidth data transfer.
• Hyperscale Cloud Data Centers: Leaf-spine architecture uplinks, ToR switch-to-server connections, and storage network links (≤50m).
• Enterprise Data Centers: High-density 400G/800G connectivity for virtualization, big data analytics, and cloud migration projects.
• NVIDIA End-to-End Networks: Direct integration with Quantum-2 InfiniBand switches, Spectrum-4 Ethernet switches, and ConnectX-7 OSFP adapters for optimized performance.

Supported Accessories & Modules

• OM3/OM4 Multimode Fiber Cables: MPO-12/APC patch cables (30m/50m) for 400G/800G links.
• MPO-12/APC Splitter Cables: 1:2 splitters for 2x200Gbps connectivity.
• Mellanox Quantum-2 Switches: 32/64-OSFP cage switches for 64–128x400G port configurations.
• Mellanox Spectrum-4 Switches: 32/64-OSFP cage Ethernet switches for high-density 400G/800G networking.
• ConnectX-7 OSFP Adapters: 400G OSFP NICs for server/storage connections.
• OSFP Transceiver Cases: Protective cases for storage and transport.

Frequently Asked Questions (FAQ)

Q1: What is the difference between MMA4Z00-NS and MMA4Z00-NS400?

A: MMA4Z00-NS is a twin-port 800G (2x400G) transceiver with dual MPO-12/APC connectors. MMA4Z00-NS400 is a single-port 400G transceiver with one MPO-12/APC connector, designed for ConnectX-7 NICs.

Q2: Can the MMA4Z00-NS work with non-Mellanox switches?

A: Yes, it is compliant with OSFP MSA and CMIS 5.0 standards, enabling interoperability with third-party OSFP-enabled switches that support 400G/800G PAM4 SR8 transceivers.

Q3: What fiber should I use for 50m links?

A: Use OM4 multimode fiber for 50m reach. OM3 fiber supports up to 30m. Ensure MPO-12/APC connectors (green) are used, not UPC (aqua).

Q4: Does the module support InfiniBand and Ethernet?

A: Yes, it natively supports InfiniBand NDR and Ethernet (IEEE 802.3ck) protocols, auto-negotiating based on the connected port.

Q5: What is the warranty for the MMA4Z00-NS?

A: It typically comes with a 3-year manufacturer warranty (varies by supplier).