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Green circuit board with metal bracket and two QSFP+ ports

Mellanox Technologies

Mellanox Technologies CX354A ConnectX-3 2-port 40Gb expansion card

SKU CH-F90E-QDKNA MPN CX354A

Dual-port 40 Gbps InfiniBand adapter with QSFP+ interfaces for high-performance computing

  • TypeNetwork Adapter
  • Two ports double bandwidth for dense server clusters
  • 40 Gbps throughput accelerates HPC and storage workloads
  • QSFP+ cages accept multi-mode or single-mode fiber cables
  • ConnectX-3 engine cuts latency for real-time applications
  • New condition guarantees factory-fresh reliability out of the box

Two-Port 40 Gbps Network Adapter

The Mellanox CX354A ConnectX-3 is a dual-port QSFP+ InfiniBand adapter built for high-performance computing clusters. It delivers up to 40 Gbps per port using Quad Data Rate technology. This card targets system integrators and data-centre operators who need low-latency fabric for scientific workloads or high-frequency trading platforms.

QSFP+ Interface Flexibility

Each of the two ports accepts standard QSFP+ transceivers so you can choose multi-mode or single-mode fibre to match the link distance. The adapter ships without optics or cables; those must be sourced separately to suit the specific rack layout. No software licences or management utilities are bundled in the box.

Standard PCIe Installation

The card installs in a standard PCI Express slot and is recognised by common Linux and Windows drivers without extra configuration. The main friction point is sourcing compatible QSFP+ modules and fibre patch cords that match the required reach and fibre type. Buyers who need copper twinax or Ethernet protocol support should verify interoperability before purchase.

Pluspunten

  • Two ports double bandwidth for dense server clusters
  • 40 Gbps throughput accelerates HPC and storage workloads
  • QSFP+ cages accept multi-mode or single-mode fiber cables
  • ConnectX-3 engine cuts latency for real-time applications
  • New condition guarantees factory-fresh reliability out of the box

Specificaties

TypeNetwork Adapter

Vragen over dit artikel

Will the QSFP+ transceivers on this CX354A need periodic replacement?

The CX354A uses standard QSFP+ modules that can be swapped individually if a link degrades; the card itself has no user-serviceable parts.

What limits sustained 40 Gbps throughput on this adapter?

Sustained line-rate traffic is bounded by the PCIe bus width and host CPU offload capacity rather than the dual-port 40 Gbps InfiniBand links.

How much heat and power does the CX354A produce under continuous load?

The adapter draws power from the PCIe slot and relies on system airflow; no onboard fan is present, so case cooling determines operating temperature.

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