The NVIDIA/Mellanox MMS4A50-XM (980-9IAS0-00XM00) Compatible OSFP IHS/Closed Finned Top Optical Transceiver is an InfiniBand 1.6T 2x 800Gb/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 200G-PAM4. The dual far reach 8-channel (2x FR4) design uses 200G-PAM4 electrical and optical modulation based on the CWDM4 serial, multiplexed 1310nm wavelength grid. It is qualified for use in InfiniBand XDR end-to-end systems.
The IHS/Closed Finned Top version is suitable for Quantum-X800 air-cooled and liquid-cooled switches. It is the ideal solution for supercomputing and HPC industries, seamlessly integrating into computing and storage infrastructure to ensure efficient high-performance interconnectivity. The main application is linking two switches together up to 2km.
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.
