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Nvidia Scale AI & HPC with QM9790-NS2R – 400G C2P InfiniBand Switch with In-Network Computing
Product Details:
| Brand Name: | Mellanox |
| Model Number: | MQM9790-NS2R(920-9B210-00RN-0D0) |
| Document: | MQM9700 series.pdf |
Payment & Shipping Terms:
| Minimum Order Quantity: | 1pcs |
|---|---|
| Price: | Negotiate |
| Packaging Details: | outer box |
| Delivery Time: | Based on inventory |
| Payment Terms: | T/T |
| Supply Ability: | Supply by project/batch |
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Detail Information |
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| Model NO.: | MQM9790-NS2R | Transmission Rate: | 10/100/1000Mbps |
|---|---|---|---|
| Ports: | 48 | Function: | Lacp, Stackable, Vlan Support |
| Technology: | Infiniband | Specification: | Without Management |
| Trademark: | Mellanox | Origin: | India / Israel / China |
| Highlight: | Nvidia InfiniBand switch 400G,Nvidia network switch with in-network computing,Nvidia QM9790-NS2R InfiniBand switch |
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Product Description
Nvidia Scale AI & HPC with QM9790-NS2R – 400G C2P InfiniBand Switch
The NVIDIA Quantum-2 QM9790-NS2R delivers 64 ports of 400Gb/s InfiniBand in a 1U chassis with connector-to-power (C2P) airflow, enabling extreme-scale AI and HPC clusters in data centers where reverse airflow is required. Designed for external management with NVIDIA UFM, it streamlines operations while supporting Fat Tree, DragonFly+, and Torus topologies.
Product Overview
The QM9790-NS2R is an unmanaged (externally managed) 400Gb/s InfiniBand fixed-configuration switch from the NVIDIA Quantum-2 series, featuring connector-to-power (C2P) airflow for flexible rack integration. It provides 32 OSFP ports, each capable of 400Gb/s (or 128 ports at 200Gb/s with port-split technology), and offers an aggregate bidirectional throughput of 51.2 Tb/s. With support for NVIDIA SHARPv3, RDMA, adaptive routing, and advanced congestion control, the QM9790-NS2R is built for the most demanding HPC, AI, and enterprise workloads.
Key Features
- 64 non-blocking 400Gb/s ports (32 OSFP connectors)
- 51.2 Tb/s aggregate bidirectional throughput
- Port-split technology: up to 128 ports @ 200Gb/s
- SHARPv3 in-network computing - 32× AI acceleration
- Sub-microsecond latency with adaptive routing
- Self-healing fabric, QoS, and congestion control
- 1+1 redundant hot-swappable power (200-240Vac)
- C2P (connector-to-power) airflow - hot-swappable fans
- External management via NVIDIA UFM / MLNX-OS
- Backward compatible with previous InfiniBand generations
Technology: NVIDIA Quantum-2 Architecture
The Quantum-2 platform integrates the third-generation SHARP technology (SHARPv3), enabling in-network data aggregation that reduces data movement and accelerates AI training and HPC simulations. Combined with Remote Direct Memory Access (RDMA) and NVIDIA's Scalable Hierarchical Aggregation and Reduction Protocol, the QM9790-NS2R dramatically improves application performance while data traverses the fabric.
Typical Deployments
- AI & Machine Learning clusters - large-scale GPU-accelerated training with SHARPv3
- High-performance computing (HPC) - research simulations, weather modeling, and genomics
- Data center spine-leaf - 400G InfiniBand fabrics for low-latency storage and compute
- Enterprise & cloud - scalable, multi-tenant networks with UFM management
- Government & education - research labs and supercomputing centres
Compatibility
| Component / Ecosystem | Support |
|---|---|
| InfiniBand Speed | NDR 400Gb/s, backward compatible with HDR, EDR, FDR |
| Cabling | Passive/active copper or active fiber; OSFP connectors |
| Management | NVIDIA UFM, MLNX-OS, CLI, WebUI, SNMP, JSON-RPC |
| Topologies | Fat Tree, SlimFly, DragonFly+, multi-dimensional Torus |
| Operating Systems | Linux, Windows (with InfiniBand stack), VMware |
| GPUs / Accelerators | NVIDIA HGX, DGX, and third-party GPU servers |
Specifications
| Parameter | QM9790-NS2R |
|---|---|
| Ports / Speed | 64 ports 400Gb/s (32 OSFP); up to 128 ports @ 200Gb/s with split |
| Aggregate throughput | 51.2 Tb/s bidirectional |
| Packet forwarding | >66.5 billion packets per second (BPPS) |
| Form factor | 1U rack-mount, 43.6 x 438 x 660.4 mm |
| Weight | 14.5 kg |
| Power supply | 1+1 redundant, hot-swappable, 200-240Vac, 80+ Gold, ENERGY STAR |
| Cooling | Connector-to-power (C2P) airflow, hot-swappable fans |
| Management ports | 1x USB 3.0, 1x USB (I2C), 1x RJ45, 1x RJ45 (UART) |
| CPU / Memory | x86 Coffee Lake i3, 8GB DDR4 SO-DIMM, 16GB M.2 SSD |
| Software | MLNX-OS (external management via UFM) |
| Operating temperature | 0°C to 40°C |
| Humidity (operating) | 10% - 85% non-condensing |
| Altitude | Up to 3050 m |
| Safety / EMC | RoHS, CB, cTUVus, CE, CU; FCC, VCCI, ICES, RCM |
| Warranty | 1 year (extended options available) |
Selection Guide
| Orderable Part Number | Description | Airflow | Management |
|---|---|---|---|
| MQM9790-NS2R | 64-port 400Gb/s, 32 OSFP, unmanaged, C2P airflow | Connector-to-power (C2P) | External (UFM) |
| MQM9790-NS2F | 64-port 400Gb/s, 32 OSFP, unmanaged, P2C airflow | Front-to-rear (P2C) | External (UFM) |
| MQM9700-NS2F | 64-port 400Gb/s, managed, P2C airflow | Front-to-rear | On-board subnet manager |
| MQM9700-NS2R | 64-port 400Gb/s, managed, C2P airflow | Connector-to-power | On-board subnet manager |
Advantages
- Unmatched density: 64 ports of 400G in 1U - reduces rack space and power per port
- In-network acceleration: SHARPv3 reduces data movement and accelerates AI/ML workloads up to 32×
- Flexible topologies: Supports Fat Tree, DragonFly+, Torus, and more for any cluster design
- Operational efficiency: External UFM management provides proactive monitoring, provisioning, and troubleshooting
- C2P airflow flexibility: Matches data centers with reverse airflow for optimal thermal management
- Investment protection: Backward compatible with HDR/EDR and future-proof for NDR200/400
Key Facts
Ports: 64 x 400Gb/s (32 OSFP)
Throughput: 51.2 Tb/s
Packet rate: >66.5 BPPS
Management: External (UFM)
Airflow: C2P (connector-to-power)
Warranty: 1 year
Throughput: 51.2 Tb/s
Packet rate: >66.5 BPPS
Management: External (UFM)
Airflow: C2P (connector-to-power)
Warranty: 1 year
Buyer Checklist
- Confirm airflow direction (C2P) matches your data center hot-aisle/cold-aisle layout - this is a reverse airflow model
- Plan for external management - ensure UFM licenses and server infrastructure are ready
- Validate power input (200-240Vac) and redundancy requirements
- Check OSFP cable lengths and types (copper/fiber) for your rack distances
- Request extended warranty or on-site support if needed for mission-critical deployment
About Hong Kong Starsurge Group
Founded in 2008, Hong Kong Starsurge Group Co., Limited is a technology-driven provider of network hardware, IT services, and system integration solutions. With an experienced sales and technical team, we serve industries including government, healthcare, manufacturing, education, finance, and enterprise. Starsurge offers IoT solutions, network management systems, custom software development, multilingual support, and global delivery.
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