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Green PCIe card with metal bracket and single QSFP28 port

HPE

HPE CX555A Infiniband EDR 100GB 1-Port 841QSFP28 Adapter

SKU CH-PT79-61Z1G

Single-port 100 Gb Infiniband EDR adapter with Mellanox ConnectX-5 technology, PCIe Gen3 x16 and QSFP28 connector

  • Height1.000"
  • Width8.000"
  • Weight0.80 lbs
  • 100 GB/s Infiniband EDR throughput via Mellanox ConnectX-5 technology
  • Single QSFP28 port connects directly to EDR, FDR and 100 GbE switches
  • PCIe Gen3 x16 interface delivers full line-rate bandwidth
  • Low-profile stand-up form factor fits dense server chassis
  • IBTA 1.3 compliant for standards-based interoperability

HPE CX555A Infiniband EDR Adapter

This HPE CX555A adapter uses Mellanox ConnectX-5 technology to deliver 100 Gb/s Infiniband EDR connectivity through a single QSFP28 port. It targets high-performance computing clusters and enterprise data centres that require low-latency, high-bandwidth fabric links. The card complies with IBTA specification 1.3 and installs in a standard PCIe Gen3 x16 slot.

Compatibility checks before ordering

Verify that your server motherboard provides a full-length PCIe Gen3 x16 electrical slot and sufficient bracket clearance for the stand-up form factor. Confirm the operating system includes or can load the appropriate Mellanox OFED drivers for ConnectX-5 hardware. Ensure your rack or switch infrastructure supports Mellanox EDR Infiniband, FDR Infiniband or 100 Gb Ethernet switching. The adapter ships without cables or transceivers, so source compatible QSFP28 optics or direct-attach copper separately.

Sustained-load behaviour

Under continuous traffic the ConnectX-5 controller maintains line-rate throughput across the 100 Gb/s port while offloading transport processing from the host CPU. The PCIe Gen3 x16 host interface supplies ample headroom so the adapter does not become a bottleneck during prolonged MPI, storage or database workloads. Passive cooling relies on server chassis airflow; confirm your enclosure delivers adequate front-to-back flow to keep the card within thermal limits during extended runs.

Points forts

  • 100 GB/s Infiniband EDR throughput via Mellanox ConnectX-5 technology
  • Single QSFP28 port connects directly to EDR, FDR and 100 GbE switches
  • PCIe Gen3 x16 interface delivers full line-rate bandwidth
  • Low-profile stand-up form factor fits dense server chassis
  • IBTA 1.3 compliant for standards-based interoperability

Caractéristiques

BrandHPE
Height1.000"
Width8.000"
Weight0.80 lbs

Questions sur cet article

Does the HPE CX555A adapter ship with a QSFP28 transceiver or cable, or must those be purchased separately?

The adapter includes only the card itself; a compatible QSFP28 transceiver or direct-attach cable must be sourced separately.

Which port count and speed variant matches the CX555A model number?

The CX555A is the single-port 100 GB Infiniband EDR version with one QSFP28 port.

What throughput can I expect from the PCIe Gen3 x16 interface on the CX555A?

The PCIe Gen3 x16 link supports up to 100 GB Infiniband EDR line rate, matching the adapter’s rated connector speed.

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