NVIDIA Q3400-RA Spine Switch: 115.2 Tb/s Throughput for Scalable Data Centers
Price:
Negotiate
MOQ:
1pcs
Delivery Time:
Based on inventory
Brand:
Mellanox
Product Description
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
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
Similar Products
Get in Touch
Have questions about our products or want to discuss a custom order? Our team is ready to help you.
Company
Hong Kong Starsurge Group Co., Limited
Location
FLAT 2304, 23/F HO KING, COMMERCIAL CENTRE, 2-16 FAYUEN STREET, MONG KOK KOWLOON HONG KONG
Contact Person
Echo