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64-port 400Gb/s NDR unmanaged switch with C2P airflow, designed for hyperscale AI and HPC clusters requiring external fabric management via NVIDIA UFM.
Product Overview
The NVIDIA Quantum-2 MQM9790-NS2R is a fixed-configuration 1U InfiniBand switch from the QM9700 series, offering 64 non-blocking ports at 400Gb/s (NDR). With an aggregate bidirectional throughput of 51.2 terabits per second and over 66.5 billion packets per second, it is built for extreme-scale workloads.
The NS2R variant features connector-to-power (C2P) reverse airflow, ideal for data center rows where cold air is drawn from the opposite side. As an unmanaged model, it relies on external controllers such as NVIDIA Unified Fabric Manager (UFM) for advanced orchestration, monitoring, and proactive troubleshooting.
Key Features
64 ports of 400Gb/s NDR - Full wire-speed non-blocking switching in 1U
Unmanaged + UFM ready for centralized provisioning and telemetry
1+1 redundant hot-swappable PSU - 80 PLUS Gold+ certified
RDMA, adaptive routing, and congestion control
Backward compatible with HDR 200G, EDR 100G, and FDR
Technology - SHARPv3 & In-Network Computing
The MQM9790-NS2R integrates the third generation of NVIDIA Scalable Hierarchical Aggregation and Reduction Protocol (SHARPv3). By performing data reduction operations inside the switch fabric, it drastically reduces the volume of data that must traverse the network between endpoints, directly accelerating AI frameworks and scientific simulations.
Typical Deployments
Large-Scale AI Clusters - GPU-accelerated data centers requiring centralized fabric management
Hyperscale HPC Environments - SlimFly, DragonFly+, and Fat Tree topologies
Multi-Tenant Cloud Data Centers - Unmanaged switches controlled via UFM for multi-cluster automation
Research & National Labs - Advanced telemetry and predictive maintenance requirements
Specifications
Parameter
MQM9790-NS2R Details
Port Speed & Count
64 ports of 400Gb/s NDR via 32 OSFP connectors
Aggregate Throughput
51.2 Tb/s bidirectional
Packet Processing Capacity
>66.5 billion packets per second (BPPS)
Form Factor
1U rackmount; 43.6mm (H) x 438mm (W) x 660.4mm (D)
1+1 redundant, hot-swappable; 200-240V AC, 80 PLUS Gold
Operating Temperature
0°C to 40°C
Warranty
1 year (extended options available)
Selection Guide - QM9700 Series
Orderable Part Number
Description
Airflow
Management
MQM9700-NS2F
64 ports 400Gb/s, managed
Power-to-connector
On-board subnet manager
MQM9700-NS2R
64 ports 400Gb/s, managed
Connector-to-power
On-board subnet manager
MQM9790-NS2F
64 ports 400Gb/s, unmanaged
Power-to-connector
External (UFM / 3rd party)
MQM9790-NS2R
64 ports 400Gb/s, unmanaged
Connector-to-power
External management (UFM ready)
Why Choose Starsurge
Global supply chain with express delivery worldwide
Technical expertise in topology design and OSFP cabling optimization
Tailored BOM with custom cable assemblies and extended service contracts
Multilingual support in English, Mandarin, and Cantonese
Competitive volume pricing for government, research, and enterprise tenders
Frequently Asked Questions
Q: What is the main difference between MQM9790-NS2R and MQM9700-NS2R?
A: MQM9790-NS2R is unmanaged and does not include an on-board subnet manager; it is designed to be managed by external controllers like NVIDIA UFM. MQM9700-NS2R includes an internal subnet manager for standalone operation up to 2000 nodes.
Q: Can I use the C2P (NS2R) model in a standard front-to-rear cooling data center?
A: C2P airflow draws air from the connector side (rear) to the power side (front). It is intended for specific reverse-cooling architectures. Please verify your rack cooling direction before ordering.
Company Introduction
Hong Kong Starsurge Group Co., Limited - Founded in 2008, Starsurge is a technology-driven provider of network hardware, IT services, and system integration solutions. We serve government, healthcare, manufacturing, education, finance, and enterprise sectors worldwide.
Hong Kong Starsurge Group Co.
Leading IT Solutions Provider & System Integrator Since Establishment
Hong Kong Starsurge Group Co. is a technology-driven enterprise specializing in IT network system integration, IoT solutions, and custom software development. With extensive industry expertise ac...
Hong Kong Starsurge Group Co.
Leading IT Solutions Provider & System Integrator Since Establishment
Hong Kong Starsurge Group Co. is a technology-driven enterprise specializing in IT network system integration, IoT solutions, and custom software development. With extensive industry expertise ac...
