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Green PCB network card with dual QSFP56 cages and gold PCIe 4.0 x16 edge connector

NVIDIA

NVIDIA MCX623106AC-CDAT ConnectX-6 Dx 100GbE dual-port QSFP56 PCIe 4.0 x16 crypto network card

SKU CH-NSP0-1TH68 MPN MCX623106AC-CDAT

A dual-port QSFP56 network adapter delivering 100 Gb/s over PCIe 4.0 x16 with inline IPsec and TLS crypto acceleration

  • 100 Gb/s bandwidth through dual-port QSFP56 connectivity
  • Sub 0.8 usec latency for responsive data paths
  • 215 Mpps message rate handles heavy packet loads
  • IPsec and TLS in-line crypto acceleration offloads security
  • PCIe 4.0 x16 interface supports up to 100 GbE speeds

Dual-port 100GbE QSFP56 adapter

The NVIDIA ConnectX-6 Dx EN adapter card delivers up to 100 Gb/s bandwidth across two QSFP56 ports. It installs in a PCIe 4.0 x16 slot and supports 100GBase-X, 50GBase-X, 25GBase-X, 10GBase-X and 1000Base-X optical links. The card includes in-line IPsec and TLS crypto acceleration for secure data transport.

Thermals noise and power in normal use

The adapter achieves sub 0.8 usec latency and a message rate of up to 215 Mpps while handling normal traffic loads. A flexible programmable pipeline manages new network flows and overlay tunnelling without adding measurable processing delay. Multi-Host support with advanced QoS keeps throughput steady across virtualised workloads.

Crypto acceleration decides fit

IPsec and TLS in-line crypto acceleration is the single specification that determines whether this card matches the deployment. Buyers who do not require hardware-accelerated encryption at line rate should evaluate a non-crypto variant. Builders needing more than two ports or a different form factor cannot use this adapter.

How it compares

Measured against everything we stock in Ethernet Cards & NICs, at today’s prices. Recalculated every night.

Price $1,126.99
Pricier than about 91% of the 1,505 comparable items (median $90.99).

Specifications

Size & build
Shipping weight0.13 kg
Package size171 × 165 × 22 mm

Questions about this item

How do I install the MCX623106AC-CDAT in a PCIe 4.0 x16 slot and what step is often missed?

Insert the card into a PCIe 4.0 x16 slot, secure the bracket, then attach compatible QSFP56 transceivers and fibre cables to both ports; the step often missed is verifying the motherboard BIOS allocates x16 lanes to that slot rather than defaulting to x8.

What maintenance or replacement will the ConnectX-6 Dx 100GbE adapter need over time?

The adapter itself has no user-serviceable parts; plan to replace QSFP56 transceivers or fibre patch cables if link errors appear, and keep the driver and firmware current through the OS update channel.

At what sustained throughput does the dual-port 100GbE card hit its first bottleneck?

Each port supports up to 100 Gb/s, so the first limit under sustained load is the 100 Gb/s per-port line rate; the PCIe 4.0 x16 host interface provides enough bandwidth for both ports simultaneously.

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