brand: NVIDIA PN: MMA4Z00-NS QSFP-800G-SR8 Form Type: OSFP 800G SR8 multi-mode optical module PAM4 2x SR4 850nm 50m DOM Dual MPO-12/APC NDR, heat sink top Speed : 800GB description: QSFP top of the heat sink . Optical transceiver Type: pluggable optical transceiver Reach: 50M Wavelength: 850nm interface: Dual MTP/MPO-12 Emitter type: VCSEL . Transmitting power: 4.6 ~ 4 DBM. Minimum receiving power: 6.4 dBm . Power budget: 1.8dB . Receive overload: 4dBm. Power dissipation: ≤14W. Extinction ratio: > 2.5dB Data Diagnostics: (DDM/DOM) support . CDR (Clock Data Recovery): The TX & RX has built-in CDR Maximum transmission distance: 60m@OM3/100m@OM4 . Fiber type: multimode . Receiver type: PD . Environment: 0 to 70C . Country of origin: Thailand NVIDIA MMA4Z00-NS is an InfiniBand and Ethernet 800Gb/s 2x400Gb/s Twin-port OSFP, DR8 multimode, parallel, 8-channel transceiver using two, 4-channel MPO-12/APC optical connectors at 400Gb/s each. The parallel multimode, short reach 8-channel (SR8) uses 100G-PAM4 modulation and has a maximum fiber reach of 50-meters using 8 multimode fibers. The 50-meter length assumes two optical patch panels in the link. The Twin-port SR8 transceiver is a key NVIDIA innovation with two internal transceiver engines enabling 64-ports of 400Gb/s in a 32-OSFP cage Quantum-2 switch. Spectrum-4 switches have 32 or 64 cages and enable 64-128 400G ports. The transceiver firmware supports both InfiniBand and Ethernet and is automatically enabled based on the switch protocol. The Quantum-2 and Spectrum-4 switches require finned-top OSFP shells for extra transceiver cooling. The main application for MMA4Z00-NS is linking two switches together with up to 50-meter transceivers (marked blue). A flat-top version offered for liquid-cooled and DGX H100 Cedar7 systems links.
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