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NVIDIA MMS4A20 800Gbps, DR4 Single-port OSFP, MPO, 1310nm Single Mode, RHS (500m) Transceiver

NVIDIA MMS4A20 800Gbps, DR4 Single-port OSFP, MPO, 1310nm Single Mode, RHS (500m) Transceiver

The ConnectX-8 adapter is a PCIe Gen 6 bus adapter with an IC that converts 48 lanes of 64GT/s PCIe channels, modulation, and line rates to 4-channels of 200G-PAM4 for 800Gb/s XDR InfiniBand.

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Description

Introduction

The NVIDIA MMS4A20 is an 800Gb/s single-mode optical transceiver supporting the XDR 800Gb/s InfiniBand protocol. It is used to link the Quantum-X800 QM3x00 switches using Twin-port OSFP 2x800Gb/s transceivers to the dual 800Gb/s ConnectX-8 mezzanine card in liquid cooled system and ConnectX-8 PCIE cards. OSFP cages are located in the compute tray front-panel.

The line rate is 200Gb/s using Pulse Amplitude Modulation of 4- channels denoted as 200G-PAM4, enabling two data bits to be transferred per clock pulse. The electrical configuration is 4-channels of 200G-PAM4. The optical configuration has one, 500-meter, Datacenter Reach, 4-channel (DR4), 800Gb/s optical connector, and is a single Multiple Push-On 12-fiber, Angled Polished Connector or MPO-12/APC. One MPO-12/APC optical connector is used per transceiver.

Based on 9-um, single mode fibers, the 800G transceiver can reach up to 500-meters, supporting large GPU clusters.

The plug formfactor is a single-port OSFP (Octal Small Formfactor Plug) and uses a Riding Heat Sink (RHS) or flat-top OSFP connector with the cooling fins on top of the ConnectX-8 cage. This can also be used in liquid-cooled Riding Heat Sink (RHS) applications.

NVIDIA’s transceivers guarantee optimal operation in NVIDIA end-to- end InfiniBand systems and rigorous production testing ensures the lowest bit error rates, low-latency, and best out-of-the-box installation experience, performance, and durability.

Flat Top Transceiver

image-2024-7-1_11-22-58-version-1-modificationdate-1741799461580-api-v2.png

Note

Images are for illustration purposes only. Product labels, colors, and lengths may vary.

Key Features

  • 800G single mode transceiver
  • 4-channels and optical modulation
  • OSFP Riding Heat Sink, flat top connector
  • 1310nm laser
  • Single MPO-12/APC optical connector
  • 500m max reach
  • Maximum reach: 500-meters
  • 18W max power2W low-power mode
  • Single 3V power supply
  • Class 1 laser safety
  • Hot pluggable, RoHS compliant
  • OSFPmsa.org compliant
  • Supports CMIS 4.0 functions
  • Secure Firmware boot and update features

Applications

  • Linking ConnectX-8 cards with Quantum-X800 QM3x00 Switches
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