SUN 7046442 InfiniBand ConnectX-3 40Gbps 2-Port QSFP network card

Sun Oracle InfiniBand ConnectX-3 40Gbps Adapter

This Sun Oracle InfiniBand ConnectX-3 adapter delivers 40Gbps connectivity through two QSFP ports. It is built for PCI Express servers in enterprise data centres, high-performance computing clusters and cloud environments. Hardware offload engines handle overlay network tunnelling to reduce host CPU load. The card targets administrators who need low-latency, high-throughput fabric links.

PCI Express bandwidth and QSFP cabling constraints

The card operates over a PCI Express interface, so total throughput depends on the slot generation and lane count available on the host board. Each QSFP port supports 40Gbps InfiniBand or Ethernet signalling, but actual line rate is limited by the PCIe link width and the switch fabric on the other end. Cable length and quality also affect signal integrity at this speed. Buyers who need more than two ports or a different media type must select another adapter.

Dual-port QSFP bracket and low-profile fit

A metal bracket carries two QSFP cages for direct-attach copper or optical transceivers, allowing flexible reach inside the rack. The low-profile form factor fits 1U and blade servers where full-height cards cannot be installed. Passive cooling relies on chassis airflow, so adequate front-to-back ventilation is required. Installers should verify bracket screw alignment matches the server chassis before deployment.