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Product Line: Mellanox Technologies
Product Type: Network Adapter
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Original price $0.00 - Original price $10,028.00
Original price
$0.00 - $10,028.00
Current price $0.00
Title: Surplus

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Product Description

The Mellanox® Quantum™ HDR InfiniBand Switch features 40 QSFP56 non-blocking ports, offering an impressive 16Tb/s aggregate data throughput capability for high-performance computing and data center applications. It supports a broad range of power inputs (100-127VAC, 200-240VAC) and operates efficiently within a temperature range of 0ºC to 40ºC. Designed for optimal performance, it boasts sub-130ns switch latency, adaptive routing, and compatibility with both passive copper and active fiber cables, making it an essential component for efficient network infrastructure.

Key Feature for the QM8790-HS2F

  • What is the maximum aggregate throughput of the Mellanox® Quantum™ HDR InfiniBand Switch?
    The maximum aggregate throughput is 16Tb/s.
  • How many QSFP56 ports does the switch have?
    The Mellanox® Quantum™ HDR InfiniBand Switch has 40 QSFP56 ports.
  • Is the Mellanox® Quantum™ HDR InfiniBand Switch rack mountable?
    Yes, it is designed for mounting in a 19’’ rack with a 1U chassis.
  • What types of power supplies are included with the switch?
    It includes 2 AC power supplies.
  • Can the Mellanox® Quantum™ HDR InfiniBand Switch support both copper and fiber cables?
    Yes, it supports passive copper or active fiber cables.
  • What is the operating temperature range of the switch?
    The operating temperature range is from 0ºC to 40ºC.
  • Does the switch support Adaptive Routing?
    Yes, Adaptive Routing is supported.
  • What is the size of the forwarding database?
    The switch has a 4X48K entry linear forwarding database.
  • Are the power supplies hot-pluggable?
    Yes, the power supplies support hot plug operation.
  • What are the compliance standards of the Mellanox® Quantum™ HDR InfiniBand Switch?
    It is compliant with IBTA 1.21 and 1.3.

Product Review

The Mellanox® Quantum™ HDR InfiniBand Switch offers high performance with 40 QSFP56 ports supporting an aggregate data throughput of up to 16Tb/s, making it suitable for demanding data center environments. However, it is an unmanaged switch, which might limit flexibility for network engineers who require advanced configuration options. Additionally, its support for adaptive routing and a low sub-130ns switch latency enhances network efficiency and reduces bottlenecks, but the operating temperature range limits its deployment in environments that can exceed 40ºC.


The Mellanox Technologies QM8790-HS2F, part of the Quantum HDR InfiniBand Switch series, is designed to cater to high-performance computing, artificial intelligence, and storage environments. It features a 1U chassis form factor, making it suitable for deployment in standard 19-inch racks. The switch is equipped with 40 QSFP56 ports, supporting non-blocking connectivity with an aggregate data throughput capability of up to 16Tb/s, making it an ideal solution for environments demanding high bandwidth and low latency. This switch operates with dual power supplies (AC), ensuring uninterrupted service and reliability for critical operations. The power supplies support an input range of 100-127VAC and 200-240VAC, with a frequency range of 50-60Hz. This flexibility allows for deployment in various power environments globally. The design includes a standard depth with P2C (port-to-core) airflow, accompanied by a Rail Kit, facilitating easy installation and maintenance in data center environments. Key hardware specifications of the Mellanox QM8790-HS2F include: - 40 QSFP56 ports that offer high-speed HDR InfiniBand connectivity. These ports are designed for non-blocking data transmission, ensuring efficient network operations. - Compliance with IBTA (InfiniBand Trade Association) versions 1.21 and 1.3, guaranteeing interoperability and adherence to industry standards. - A forwarding database with 4X48K entries, enabling efficient data packet routing and minimizing latency within the network. The switch supports an extensive range of cable types, including passive copper and active fiber cables, providing flexibility in network design and expansion. The QSFP56 connectors facilitate high-density port configurations while maintaining high throughput levels. In operation, the QM8790-HS2F maintains a sub-130ns switch latency, ensuring fast data processing and transfer speeds critical for applications requiring real-time performance. The switch's architecture supports 9 virtual lanes (8 data and 1 management), allowing for efficient traffic management and prioritization. Additionally, it offers an Adaptive Routing feature, enhancing the network's ability to dynamically adjust to changing traffic patterns and conditions. For network management and connectivity, the switch includes an I2C interface (RJ45), simplifying the integration with external management systems. The per-port status LED for Link and Activity provides at-a-glance monitoring of network status, aiding in quick diagnostics and troubleshooting. The switch's operating temperature ranges from a minimum of 0ºC to a maximum of 40ºC, ensuring reliable performance under various data center conditions. Furthermore, its support for a wide range of Maximum Transmission Units (MTU), from 256 to 4Kbytes, allows for flexible configuration based on specific network requirements. In summary, the Mellanox Technologies QM8790-HS2F Quantum HDR InfiniBand Switch is a high-capacity, low-latency solution designed for data centers requiring efficient, high-bandwidth connectivity. Its comprehensive set of features and support for advanced networking technologies make it a versatile option for a wide range of high-performance computing applications.


Part NumberQM8790-HS2F
ManufacturerMellanox Technologies
Product LineQuantum™ HDR InfiniBand Switch
Port Configuration40 QSFP56 ports
Power Supply Units2 AC Modules
Management TypeUnmanaged, with standard depth and P2C airflow, includes Rail Kit
Mounting Option1U chassis suitable for 19-inch rack installation
Port Density40 non-blocking QSFP56 ports, maximum throughput 16Tb/s (HDR)
ComplianceIBTA 1.21 and 1.3 Standards
Virtual Lanes9 (8 for data, 1 for management)
Supported MTU256 bytes to 4Kbytes
Routing CapabilityAdaptive Routing Technology
Forwarding Database4X48K entries, linear structure
Management InterfaceI2C via RJ45 connector
Cable SupportQSFP56 ports compatible with passive copper or active fiber cables
Diagnostic LEDsPer-port Link and Activity status indicators
RedundancyDual slot, redundant configuration
Hot Swap CapabilitySupports hot plugging
Power Specifications100-127VAC / 200-240VAC input; 50-60Hz; single-phase AC; 4.5A / 2.9A
Operating Temperature Range0ºC to 40ºC
Maximum Throughput16Tb/s aggregate
Switch LatencyBelow 130ns

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