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NVIDIA Mellanox Quantum HDR and NDR InfiniBand Switches

Best Selling

NVIDIA Mellanox Quantum InfiniBand switches connect GPU and HPC servers at HDR 200Gb/s, and Quantum-2 at NDR 400Gb/s, for AI training and supercomputing clusters. NetworkTigers sells QM8700, QM8790 and QM9790 switches and CS8500 director blades, refurbished, used and new, tested and working.

NVIDIA Quantum models

Model	Generation	Ports	Management
QM8700	Quantum, HDR	40x 200Gb/s QSFP56, or 80x 100Gb/s HDR100 with splitter cables; 1U, 16Tb/s	Managed, onboard subnet manager for up to 2,000 nodes
QM8790	Quantum, HDR	Same as QM8700	Externally managed
QM9790	Quantum-2, NDR	64x 400Gb/s through 32 OSFP cages; 1U, 51.2Tb/s	Externally managed
CS8500 leaf blade	Quantum, HDR	40x 200Gb/s QSFP56	Chassis-managed
CS8500 spine blade	Quantum, HDR	Spine (fabric) blade	Chassis-managed

Quantum part numbers

Part number	Model	Airflow
MQM8700-HS2F	QM8700	P2C, back-to-front
MQM8700-HS2R	QM8700	C2P, front-to-back
MQM8790-HS2F	QM8790	P2C, back-to-front
MQM8790-HS2R	QM8790	C2P, front-to-back
MQM9790-NS2F	QM9790	P2C, back-to-front
MQM8510-H	CS8500 leaf blade	Chassis-cooled
MQM8520-H	CS8500 spine blade	Chassis-cooled

Which one do I need?

Choose QM8700 when you need an onboard subnet manager. Choose QM8790 when a subnet manager already runs on a server or another managed switch; it costs less for the same 40 ports. QM9790 for 400Gb/s NDR with ConnectX-7 adapters. CS8500 leaf and spine blades are replacement or expansion parts for an existing CS8500 chassis, a liquid-cooled director that holds up to 800 HDR ports when fully populated. For EDR 100Gb/s, see Switch-IB EDR.

Adapters: ConnectX. Cables and optics: DAC, AOC and transceivers.

Every switch and blade carries our 365-day warranty. Ask us for a quote.