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China NVIDIA Quantum-2 MQM9790-NS2R 64-Port 400Gb/s InfiniBand Switch Unmanaged, C2P
China NVIDIA Quantum-2 MQM9790-NS2R 64-Port 400Gb/s InfiniBand Switch Unmanaged, C2P

  1. China NVIDIA Quantum-2 MQM9790-NS2R 64-Port 400Gb/s InfiniBand Switch Unmanaged, C2P
  2. China NVIDIA Quantum-2 MQM9790-NS2R 64-Port 400Gb/s InfiniBand Switch Unmanaged, C2P
  3. China NVIDIA Quantum-2 MQM9790-NS2R 64-Port 400Gb/s InfiniBand Switch Unmanaged, C2P
  4. China NVIDIA Quantum-2 MQM9790-NS2R 64-Port 400Gb/s InfiniBand Switch Unmanaged, C2P
  5. China NVIDIA Quantum-2 MQM9790-NS2R 64-Port 400Gb/s InfiniBand Switch Unmanaged, C2P
  6. China NVIDIA Quantum-2 MQM9790-NS2R 64-Port 400Gb/s InfiniBand Switch Unmanaged, C2P

NVIDIA Quantum-2 MQM9790-NS2R 64-Port 400Gb/s InfiniBand Switch Unmanaged, C2P

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Payment Terms T/T
Supply Ability Supply by project/batch
Delivery Time Based on inventory
Packaging Details outer box
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
Brand Name Mellanox
Model Number MQM9790-NS2R(920-9B210-00RN-0D0)

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Product Specification

Payment Terms T/T Supply Ability Supply by project/batch
Delivery Time Based on inventory Packaging Details outer box
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
Brand Name Mellanox Model Number MQM9790-NS2R(920-9B210-00RN-0D0)
High Light NVIDIA Quantum-2 InfiniBand switch64-port 400Gb/s network switchunmanaged InfiniBand switch C2P airflow

NVIDIA Quantum‑2 MQM9790‑NS2R

64 ports of 400Gb/s NDR InfiniBand in 1U — 51.2 Tb/s aggregate throughput · 66.5 BPPS · SHARPv3 in‑network computing · C2P airflow

Switch radix
64 x 400Gb/s
Bisection throughput
51.2 Tb/s
Packet capacity
66.5 BPPS

Hong Kong Starsurge Group – network hardware provider

Hong Kong Starsurge Group Co., Limited

Hong Kong Starsurge Group Co., Limited is a technology-driven provider of network hardware, IT services, and system integration solutions. Founded in 2008, the company serves customers worldwide with products including network switches, NICs, wireless access points, controllers, cables, and related networking equipment. Backed by an experienced sales and technical team, Starsurge supports industries such as government, healthcare, manufacturing, education, finance, and enterprise. The company also offers IoT solutions, network management systems, custom software development, multilingual support, and global delivery. With a customer-first approach, Starsurge focuses on reliable quality, responsive service, and tailored solutions that help clients build efficient, scalable, and dependable network infrastructure.

Product overview

The NVIDIA Quantum‑2 MQM9790‑NS2R is an unmanaged 1U switch offering 64 ports of 400Gb/s NDR InfiniBand. It delivers an aggregate bidirectional throughput of 51.2 Tb/s and more than 66.5 billion packets per second. Designed for extreme‑scale AI and HPC, it integrates third‑generation NVIDIA SHARP (SHARPv3) in‑network computing, boosting AI acceleration up to 32× compared to prior generation. This model features connector‑to‑power (C2P) airflow, is ready for NVIDIA UFM advanced fabric management, and supports flexible topologies (Fat Tree, DragonFly+, Torus, SlimFly).

Unmatched performance

64 non‑blocking 400Gb/s ports, 51.2 Tb/s aggregated throughput, 66.5 BPPS. Port‑split technology enables 128 ports of 200Gb/s for double‑density top‑of‑rack deployments.

In‑network computing SHARPv3

Third‑gen NVIDIA SHARP technology accelerates collective communications. Data aggregation happens inside the fabric, reducing traffic and delivering up to 32× higher AI acceleration than previous generation.

NVIDIA SHARPv3 technology

The MQM9790‑NS2R embeds the third generation of NVIDIA Scalable Hierarchical Aggregation and Reduction Protocol (SHARP). By offloading data reduction operations (all‑reduce, broadcast, etc.) to the switch fabric, SHARPv3 dramatically cuts inter‑node traffic and reduces application runtime. This in‑network computing capability is essential for massively parallel AI training and complex HPC simulations.

Typical deployments

  • Large‑scale AI supercomputers (LLM training, simulation)
  • High‑frequency financial modeling and risk analysis
  • Multi‑tenant cloud HPC with isolated fabric partitions
  • Research labs with hybrid Fat‑Tree / DragonFly+ topologies
  • Enterprise core for data‑intensive workloads (genomics, climate)

Compatibility

  • Backward compatible with 200Gb HDR, 100Gb EDR, and previous InfiniBand generations
  • Interoperable with NVIDIA ConnectX‑6, ConnectX‑7, and BlueField‑3 DPUs
  • OSFP connectors: passive/active copper, active fiber, optical modules
  • MLNX‑OS software suite (used internally); UFM management ready

Technical specifications

Parameter Details
Ports & data rate 64 ports 400Gb/s NDR (32x OSFP connectors) – non‑blocking
Aggregate throughput 51.2 Tb/s bidirectional
Packet rate >66.5 billion packets/sec
Port split mode 128 ports of 200Gb/s using NVIDIA port‑split technology
Form factor / dimensions 1U rack mount: 1.7 x 17.0 x 26.0 in (43.6 x 438 x 660.4 mm)
Weight 14.5 kg
Power supply 1+1 redundant, hot‑swappable; input 200‑240Vac; 80+ Gold, ENERGY STAR
Cooling Connector‑to‑power (C2P / reverse airflow); hot‑swap fans
CPU / memory / storage x86 Coffee Lake i3; 8GB DDR4 SO‑DIMM (2666 MT/s); 16GB M.2 SATA SSD
Management ports 1x USB 3.0, 1x USB‑I2C, 1x RJ45, 1x RJ45 (UART)
Software MLNX‑OS (unmanaged, UFM‑ready)
Operating conditions 0‑40°C, 10‑85% non‑condensing, altitude up to 3050m
Safety / compliance CE, FCC, VCCI, ICES, RCM; RoHS, CB, cTUVus, CE, CU
Warranty 1 year (extendable, please confirm)

Selection guide

OPN Description
MQM9790-NS2R Unmanaged, 64x400G, C2P airflow (rear‑to‑front)

Buyer checklist

  • ✔ Confirm airflow direction C2P matches your data center hot/cold aisle.
  • ✔ Verify power input (200‑240Vac) and redundancy requirements.
  • ✔ This is an unmanaged switch; plan to use NVIDIA UFM for advanced management.
  • ✔ For 128 ports of 200G, ensure your cables/optics support split‑mode.
  • ✔ Check compatibility with existing HDR/EDR infrastructure.

Why choose Quantum‑2

Highest radix 1U 400G switch with 51.2Tb/s capacity. SHARPv3 in‑network computing reduces job completion time. Self‑healing network, QoS, adaptive routing, and enhanced VL mapping. Energy‑efficient design lowers OPEX.

Service & support

1‑year limited hardware warranty (extendable). Advanced replacement available. 24/7 technical support through Hong Kong Starsurge Group. Firmware updates and UFM licenses available. Please contact our sales team for exact terms.

Frequently asked questions

Can I use MQM9790‑NS2R with 200Gb/s optics? Yes, using NVIDIA port‑split technology each OSFP port can operate as 2x200Gb/s, giving 128 ports of 200Gb/s.
Does this switch support RDMA? Absolutely. NDR InfiniBand natively supports RDMA, plus adaptive routing and congestion control for lowest latency.
How is MQM9790‑NS2R managed without on‑board subnet manager? It is designed to be used with NVIDIA UFM (Unified Fabric Manager) for comprehensive monitoring and management.
Is it backward compatible with ConnectX‑5 (EDR)? Yes, the switch supports mixed‑rate links and auto‑negotiation down to EDR (100Gb/s), though for optimal performance we recommend ConnectX‑6 or newer.

Important notes & precautions

  • Install only in a rack with adequate airflow – ensure fan trays match your C2P direction.
  • Use only supported OSFP modules (passive/active copper or optical) listed in the compatibility matrix.
  • Power input must be 200‑240Vac; not compatible with 110V.
  • Operating altitude up to 3050m; derating may apply above 1800m.
  • Some specifications (e.g., exact CPU model, SSD size) are typical but may change; confirm with order.

Compatibility matrix

Component Compatible with MQM9790‑NS2R
NVIDIA ConnectX‑7 (NDR) ✅ 400Gb/s native
NVIDIA ConnectX‑6 (HDR) ✅ 200Gb/s (using split or 1x200G)
NVIDIA BlueField‑3 DPU ✅ Full NDR support
Legacy QDR / FDR ❌ Not directly; requires conversion
MLNX‑OS / UFM versions ✅ Latest UFM 6.10+ recommended

Related products

  • ▪ NVIDIA Quantum‑2 MQM9700 (managed version)
  • ▪ NVIDIA ConnectX‑7 NDR adapter
  • ▪ MCP1600 OSFP/AOC cables (400G)
  • ▪ NVIDIA UFM Cyber‑AI platform

Related guides / comparisons

  • ▪ MQM9790 vs. MQM9700: UFM‑ready vs. on‑board subnet manager
  • ▪ 400G NDR vs. 200G HDR trade‑offs
  • ▪ Building a DragonFly+ with Quantum‑2
  • ▪ SHARPv3 performance white paper

Key facts 

  • ▪ 64 ports 400Gb/s NDR InfiniBand
  • ▪ 51.2 Tb/s aggregate throughput
  • ▪ 66.5 billion packets/sec
  • ▪ 128 ports 200Gb/s via port split
  • ▪ SHARPv3 in‑network computing
  • ▪ UFM ready (unmanaged)
  • ▪ C2P reverse airflow
  • ▪ 32 OSFP connectors

Suggested schema fields (Product/ProductGroup):

brand, model, mpn (MQM9790-NS2R), sku, offers, availability, manufacturer (NVIDIA), isAccessoryOrSparePartFor (cables/optics), hasVariant, productID, description, weight, dimensions, category, warranty.

Company Details

Bronze Gleitlager

,

Bronze Sleeve Bushings

 and 

Graphite Plugged Bushings

 from Quality China Factory
  • Business Type:

    Distributor/Wholesaler,Agent,Exporter,Trading Company,Seller,Other

  • Year Established:

    2008

  • Employee Number:

    50~200

  • Ecer Certification:

    Verified Supplier

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...

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Get in touch with us

  • Reach Us
  • Hong Kong Starsurge Group Co., Limited
  • FLAT 2304, 23/F HO KING, COMMERCIAL CENTRE, 2-16 FAYUEN STREET, MONG KOK KOWLOON HONG KONG
  • https://www.mellanoxnetwork.com/

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