SB7890: 36-Port EDR 100Gb/s InfiniBand Smart Switch System

1. Product Overview

The Mellanox SB7890 is a high-performance, 36-port EDR InfiniBand switch system designed for modern data centers and high-performance computing (HPC) environments. It delivers non-blocking bandwidth of up to 7.2Tb/s with ultra-low latency of 90ns, making it ideal for data-intensive applications. This network switch supports advanced in-network computing capabilities through Mellanox's SHARP™ technology, offloading collective operations from servers to significantly improve application performance.

2. Key Features

• 36 non-blocking EDR InfiniBand ports, each supporting 100Gb/s bi-directional throughput
• 7.2Tb/s aggregate switching capacity with 90ns port-to-port latency
• Integrated SHARP technology for in-network collective communication offload
• Adaptive routing and congestion control for optimized fabric performance
• Hot-swappable, redundant power supplies and cooling modules
• Low power consumption: 122W (ATIS) with passive cables

3. Core Technology

The SB7890 leverages Mellanox's Switch-IB® 2 ASIC and supports InfiniBand Trade Association (IBTA) 1.2/1.3 standards. It uses efficient 64/66 encoding and provides advanced features such as Virtual Lane (VL) mapping, port mirroring, and a 4K-entry forwarding database. The switch also integrates Co-Design SHARP (Scalable Hierarchical Aggregation and Reduction Protocol) to accelerate MPI and SHMEM operations within the network.

4. How It Works

The SB7890 operates as a fully non-blocking crossbar switch, routing data packets between ports with minimal latency. It uses adaptive routing to dynamically select paths based on network congestion, and supports VL arbitration to prioritize traffic. SHARP technology allows the switch to perform reduction and aggregation operations in hardware as data passes through, reducing network traffic and CPU overhead.

5. Applications

This InfiniBand network switch is ideal for:

• High-Performance Computing (HPC) clusters
• Artificial Intelligence and Machine Learning infrastructures
• Large-scale enterprise data centers
• High-frequency trading environments
• Research and scientific computing facilities

6. Technical Specifications

7. Advantages & Differentiators

• World’s first smart network switch with in-network computing support
• Significantly reduces MPI collective operation time—down to 3μs for large reductions
• Backward compatible with FDR and earlier InfiniBand generations
• Superior power efficiency compared to competitive offerings
• Designed for modern topologies including SlimFly, Dragonfly+, and Torus

8. Service & Support

We provide 24/7 customer consultation and technical support. All products are covered by a 1-year warranty. We ensure accurate delivery and offer large-volume supply capabilities from our extensive inventory.

9. Frequently Asked Questions

Q: What is the typical power consumption of the SB7890 switch?
A: The switch consumes approximately 122W under typical load with passive copper cables.

Q: Is the SB7890 compatible with FDR InfiniBand equipment?
A: Yes, it is fully backward compatible with FDR, QDR, and DDR InfiniBand.

Q: Can this switch be used in a leaf-spine topology?
A: Absolutely. The SB7890 is well-suited for both leaf and spine roles in modern data center architectures.

Q: What kind of cabling is supported?
A: It supports passive copper cables, active optical cables, and optical transceivers via its QSFP28 ports.

10. Precautions

• Ensure proper airflow (front-to-back or back-to-front) based on your model and data center layout.
• Operating temperature must be maintained between 0°C and 45°C.
• Use only certified Mellanox-compatible cables and transceivers for guaranteed performance.
• Complies with safety and EMC standards including CE, FCC, and RoHS.

11. Company Introduction

With over 10 years of industry experience, we operate a large factory and are supported by a strong technical team. We have served a wide range of customers and maintain a vast inventory of over 10 million units. We are authorized distributors for leading brands including Mellanox, Ruckus, Aruba, and Extreme. Our product range includes original brand-new network switch systems, network interface cards (network card), wireless access points, controllers, and cables. We are committed to providing the lowest prices and highest quality service, backed by 24/7 customer and technical support.