The NVIDIA/Mellanox InfiniBand MMS4X50-NM Compatible OSFP IHS/Closed Finned Top Optical Transceiver is an 800Gb/s 2x 400Gb/s Twin-port OSFP, 2x FR4 single mode, Multiplexed, 8-channel transceiver using two, 2-fiber, LC Duplex optical connectors each carrying 4-channels of 100G-PAM4. The dual Far Reach 8-channel (2x FR4) design uses 100G-PAM4 electrical and optical modulation based on the CWDM4 serial, multiplexed 1310nm wavelength grid. It is qualified for use in InfiniBand NDR end-to-end systems.
The twin-port OSFP IHS/Closed Finned Top transceiver is used in Quantum-2 air-cooled switches. Featured with low latency, low power, and reliability, it can link upward in spine-leaf architectures for switch-to-switch applications, downward for top-of-rack switch links to ConnectX® smart network adapters, and/or to BlueField-3 DPUs in compute servers and storage subsystems. It is the ideal solution for HPC computing, AI, and cloud data centers.
Note: "Finned-top" transceivers are now called "Integrated HeatSink" (IHS) as the cooling fins are integrated into the OSFP connector metal top. Commonly used in air-cooled switches. "Flat-top" transceivers are now called "Riding Heat Sink" (RHS) as the cooling fins ride on top of the network card or systems internal cages. This is used for both air-cooled and liquid-cooled applications for DGX, ConnectX-7, and BlueField-3 DPUS.
