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China NVIDIA Q3400-RA Spine Switch: 115.2 Tb/s Throughput for Scalable Data Centers
China NVIDIA Q3400-RA Spine Switch: 115.2 Tb/s Throughput for Scalable Data Centers

  1. China NVIDIA Q3400-RA Spine Switch: 115.2 Tb/s Throughput for Scalable Data Centers
  2. China NVIDIA Q3400-RA Spine Switch: 115.2 Tb/s Throughput for Scalable Data Centers
  3. China NVIDIA Q3400-RA Spine Switch: 115.2 Tb/s Throughput for Scalable Data Centers
  4. China NVIDIA Q3400-RA Spine Switch: 115.2 Tb/s Throughput for Scalable Data Centers
  5. China NVIDIA Q3400-RA Spine Switch: 115.2 Tb/s Throughput for Scalable Data Centers

NVIDIA Q3400-RA Spine Switch: 115.2 Tb/s Throughput for Scalable Data Centers

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Delivery Time Based on inventory
Transport Package Packing
Packaging Details outer box
Specification 43.6*433.2*590.6 mm
Transmission Rate 800GB
Origin China
Payment Terms T/T
Technology Infiniband
Trademark Mellanox
Supply Ability Supply by project/batch
Max Speed Xdr
Model NO. Q3400-RA 920-9B36F-00RX-8S0
Ports 72
Function Lacp, Stackable, Vlan Support
Model Number Q3400-RA(920-9B36F-00RX-8S0)
Brand Name Mellanox

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  1. Product Details
  2. Company Details

Product Specification

Delivery Time Based on inventory Transport Package Packing
Packaging Details outer box Specification 43.6*433.2*590.6 mm
Transmission Rate 800GB Origin China
Payment Terms T/T Technology Infiniband
Trademark Mellanox Supply Ability Supply by project/batch
Max Speed Xdr Model NO. Q3400-RA 920-9B36F-00RX-8S0
Ports 72 Function Lacp, Stackable, Vlan Support
Model Number Q3400-RA(920-9B36F-00RX-8S0) Brand Name Mellanox
High Light NVIDIA Q3400-RA Spine Switch ，NVIDIA Spine Switch 115.2 Tb/s ，data center network switch with warranty
NVIDIA Q3400-RA Spine Switch: 115.2 Tb/s Throughput for Scalable Data Centers
The NVIDIA Q3400-RA is a high-radix, 800Gb/s XDR InfiniBand switch system powered by the NVIDIA Quantum-3 ASIC. Designed for the most demanding AI and HPC environments, the 4U chassis delivers 144 ports over 72 OSFP cages, enabling massive two-level fat-tree topologies that support up to 10,368 ConnectX-8 NICs. With integrated SHARPv3, adaptive routing, and performance isolation, the Q3400-RA is the ideal spine building block for next-generation data centers.
Key Specifications
  • 144 XDR ports over 72 OSFP cages
  • 115.2 Tb/s total switching capacity
  • 4U rack-optimized form factor
  • 8 × PSU redundant, hot-swappable power supplies
  • UFM-ready FNM in-band management
Key Features
  • High-density 800Gb/s ports: 144 XDR ports (200Gb/s per lane) across 72 OSFP cages, supporting 400G and 800G optics
  • Quantum-3 ASIC: Cutting-edge 200G SerDes, SHARPv3 for collective acceleration, and advanced in-network computing
  • 115.2 Tb/s non-blocking: Full bisection bandwidth with deterministic low latency, ideal for massively parallel AI training
  • Redundant & hot-swappable: 8 power supplies (C2P airflow) and 10 fans; N+1 redundancy with zero-downtime replacement
  • UFM-ready FNM port: Dedicated in-band management port (OSFP) for NVIDIA Unified Fabric Manager™ (UFM)
  • Flexible topologies: Supports Fat-Tree, Dragonfly+, multi-dimensional Torus, and more - spine/leaf ready
Technology Overview
Quantum-3 ASIC: The Q3400-RA leverages 200Gb/s per lane SerDes, delivering 800Gb/s per OSFP port. Combined with NVIDIA SHARPv3 (Scalable Hierarchical Aggregation and Reduction Protocol), it accelerates collective operations by offloading MPI and deep learning primitives directly into the network. Adaptive routing and congestion control ensure consistent performance even in congested fabrics.
In-band management: The front-panel FNM (Fabric Network Management) port provides dedicated UFM access without consuming data ports, simplifying topology design and enabling advanced telemetry.
Typical Deployments
  • Spine in large-scale Fat-Tree: Connect up to 10,368 ConnectX-8 NICs in a two-level topology
  • AI training clusters: Power NVIDIA DGX and HGX superpod fabrics with 800Gb/s per link
  • High-performance computing: Accelerate weather, molecular dynamics, and finite element simulations
  • Cloud & enterprise data centers: Build scalable, low-latency networks for finance, manufacturing, and research
Compatibility
Component / Ecosystem Compatibility
NICs ConnectX-8, ConnectX-7, ConnectX-6 (with speed negotiation)
Optics & cables OSFP, OSFP-to-OSFP, active/passive copper, single-mode/multi-mode
Management NVOS (NVUE), UFM, SNMP, REST API, serial console
Topologies Fat-Tree, Dragonfly+, Torus, and custom
Standards InfiniBand Architecture Specification 1.5, RoHS, CE, FCC, VCCI, cTUVus
Technical Specifications
Category Detail
Port density 144 XDR ports (800Gb/s) over 72 OSFP cages
Switching capacity 115.2 Tb/s
Form factor 4U rack-mount (7" H × 17.24" W × 33.5" D) / 850 mm depth
Weight (fully populated) 60 kg (with 8 PSUs)
PSU 8 × 2000W AC, C2P airflow, 200-240V ~ 50/60Hz
Fans 10 hot-swappable fan units, C2P airflow
Typical power (ATIS) 2.9 kW (passive cables) ; 7 kW (active cables)
Management NVOS (NVUE), UFM, serial console (RJ45), USB 2.0, I²C, dual 1GbE MGT ports
Operating temperature 0°C to 35°C (reverse airflow) ; Non-op: -40°C to 70°C
Noise level 78.4 dBA @ nominal conditions (ISO 7779)
Regulatory CB, cTUVus, CE, CU, EMC (CE/FCC/VCCI/ICES/RCM), RoHS
Rail kit 930-9SKIT-00LO-00B (tool-less, 700-800 mm rack depth)
* Some values are typical. Please confirm exact specifications with your NVIDIA representative.
Selection Guide
SKU Description Airflow Rack depth
920-9B36F-00RX-8S0 Q3400-RA, 4U, 144 XDR ports, 8 PSU, managed, C2P airflow C2P (connector-to-power) Standard depth (850 mm)
930-9SKIT-00LO-00B Tool-less rail kit for 4U Q3400 -- 700-800 mm
930-9SPSU-00RA-00A 2000W AC PSU (C2P) for Quantum-3 C2P --
930-9SFAN-00RM-00B Fan unit (C2P) for XDR air-cooled systems C2P --
Advantages
  • Unmatched radix: 144 ports in 4U - fewer switches, lower cost, simpler cabling
  • Forward-compatible: Supports NDR and XDR optics, protects investment
  • SHARPv3 acceleration: Reduces AI training time by up to 20%
  • Simplified management: NVOS with NVUE, Zero-Touch Provisioning (ZTP), and UFM integration
  • Global support: 24/7 technical assistance, RMA, and on-site services
Service & Support
Hong Kong Starsurge Group Co., Limited provides full lifecycle support for NVIDIA Q3400-RA switches:
  • Pre-sales consulting: Topology design, power/cooling planning, and ROI analysis
  • Logistics & delivery: Global shipping with tracking and customs clearance
  • Technical support: Remote diagnostics, on-site replacement, and firmware updates
  • Training: NVIDIA-certified workshops (hands-on labs, UFM administration)
  • Warranty: Standard 1-year hardware warranty (extended options available)
Frequently Asked Questions
What is the difference between Q3400-RA and Q3200-RA?
Q3400-RA is a 4U chassis with 144 ports (115.2 Tb/s) - ideal for spine roles. Q3200-RA is a 2U chassis with two independent switches (72 ports total, 57.6 Tb/s) - ideal for leaf or smaller fabrics.
Can I use NDR optics with the Q3400-RA?
Yes. The ports support NDR (400Gb/s) and XDR (800Gb/s) optics and cables. For NDR connections, use the `connection-mode ndr` command in NVOS.
Is the Q3400-RA managed or unmanaged?
It is a fully managed switch with NVOS (NVUE) and supports both out-of-band (1GbE MGT) and in-band (FNM) management.
What is the FNM port?
The Fabric Network Management port is a dedicated OSFP InfiniBand port for UFM connectivity, preserving all standard ports for data traffic.
What is the typical delivery time?
Stock items ship within 5-7 business days. For custom configurations, please contact sales.
Precautions & Safety
  • Weight: The Q3400-RA weighs 60 kg. Always use a server lift and at least two persons when rack-mounting
  • Airflow: Maintain at least 8 cm clearance around ventilation openings. Use only C2P airflow PSUs and fans
  • Power: Disconnect all 8 power cords before servicing. The system uses double-pole/neutral fusing
  • Temperature: Do not operate above 35°C ambient. Monitor ASIC temperature thresholds (Warning: 105°C, Critical: 120°C)
  • Electrostatic discharge: Use ESD protection when handling cards and transceivers
Hong Kong Starsurge Group Co., Limited - network hardware and IT solutions provider
About 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 clients worldwide. With an experienced sales and technical team, we deliver tailored networking solutions -- from switches and NICs to IoT and custom software -- backed by multilingual support and global delivery. Customer-first, quality-driven, and innovation-focused.
Compatibility Matrix
NVIDIA Product Compatible with Q3400-RA Notes
ConnectX-8 (XDR) ✓ Full 800Gb/s Native XDR mode
ConnectX-7 (NDR) ✓ 400Gb/s (connection-mode ndr) Requires mode change
OSFP 800G SR/DR ✓ Class 8 (33W) support
OSFP 400G (NDR) ✓ Passive/active cables
UFM 3.5 ✓ FNM port connectivity
NVOS / ONIE ✓ ZTP, NVUE, REST API
Buyer Checklist
  • Rack depth: Ensure 850 mm (33.5″) depth and 700-800 mm rail range
  • Power: 200-240V AC, 10A per PSU. Plan for 8 C13/C15 power cords
  • Airflow: Verify C2P (connector-to-power) airflow matches your data center
  • Optics: Order OSFP transceivers or breakout cables per port count
  • Management: Serial console (RJ45) and dual 1GbE MGT ports ready
  • Cooling: Ambient temperature ≤35°C, good airflow clearance
Related Products
  • Q3200-RA (2U, 72 ports)
  • ConnectX-8 NICs
  • OSFP 800G SR/DR transceivers
  • UFM 3.5 management appliance
  • NVIDIA Quantum-3 cable kits

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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  • 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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