NVIDIA ConnectX-8 SuperNIC MCX85346AAS-HEAT
Brand: NVIDIA | Category: Network Equipment
SKU: NVIDIA-MCX85346AAS-HEAT | Part #: MCX85346AAS-HEAT | MPN: MCX85346AAS-HEAT
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About the NVIDIA ConnectX-8 SuperNIC MCX85346AAS-HEAT
The NVIDIA ConnectX-8 SuperNIC MCX85346AAS-HEAT is a 400GbE network adapter engineered for ultra-high-throughput data center environments demanding extreme bandwidth and low-latency performance. This PCIe Gen 5.0 x16 interface card delivers three QSFP-DD ports per the -346 model designation, positioning it as a critical infrastructure component for enterprise networks requiring wire-speed Ethernet connectivity. Built on NVIDIA's ConnectX-8 SuperNIC product family, the MCX85346AAS-HEAT combines carrier-grade reliability with advanced protocol support including Ethernet, RoCE v2, RDMA, and DPDK, making it suitable for both traditional networking and modern accelerated computing workloads. The hardware features IEEE 1588 PTP for precision hardware timestamping, SR-IOV virtualization support, and hardware-based traffic isolation—essential for multi-tenant and security-sensitive deployments.
Network engineers, infrastructure architects, and AI infrastructure teams select the MCX85346AAS-HEAT when standard networking falls short and GPUDirect RDMA capabilities become mandatory. Organizations running high-performance computing clusters, AI training platforms, or real-time analytics benefit from NVIDIA's RoCE v2 support and RDMA acceleration, which reduce CPU overhead and latency. The adapter's support for Linux via MLNX_OFED drivers, Windows Server, and VMware ESXi ensures broad deployment flexibility across heterogeneous environments. Its high-exhaust airflow design (HEAT suffix) accommodates demanding thermal profiles in densely packed server enclosures, while RoHS compliance meets regulatory requirements for sustainable procurement.
The MCX85346AAS-HEAT integrates seamlessly into NVIDIA's ecosystem through standard MLNX_OFED driver support and MFT-based firmware updates, simplifying operational complexity. Enterprises seeking best-in-class 400GbE performance with advanced RDMA and GPU acceleration should contact Omnixon Global to request detailed specifications, availability, and a tailored quotation for the NVIDIA ConnectX-8 SuperNIC MCX85346AAS-HEAT.
Technical Specifications
| Brand | NVIDIA |
| Category | Network Equipment |
| SKU | NVIDIA-MCX85346AAS-HEAT |
| Part Number | MCX85346AAS-HEAT |
| Condition | New |
| Interface | 400GbE |
| Manufacturer Part Number | MCX85346AAS-HEAT |
| Product Family | ConnectX-8 SuperNIC |
| Form Factor | PCIe Low-Profile / Standard Height |
| Host Interface | PCIe Gen 5.0 x16 |
| Ethernet Data Rate | 400GbE |
| Network Ports | 3-port (per model designation -346) |
| Port Type | QSFP-DD |
| Supported Protocols | Ethernet, RoCE v2, RDMA, DPDK |
| Virtualization Support | SR-IOV |
| RDMA Support | Yes — RoCE v2, GPUDirect RDMA |
| Hardware Timestamping | IEEE 1588 PTP |
| Airflow Direction | High Exhaust (HEAT) |
| Operating System Support | Linux (MLNX_OFED), Windows Server, VMware ESXi |
| Management | NVIDIA MLNX_OFED drivers; firmware update via MFT |
| Security Features | Hardware-based traffic isolation, secure boot support |
| Regulatory Compliance | RoHS compliant |
Frequently Asked Questions about NVIDIA ConnectX-8 SuperNIC MCX85346AAS-HEAT
What does the NVIDIA ConnectX-8 SuperNIC do?
The NVIDIA ConnectX-8 SuperNIC is enterprise networking hardware for data-center, campus, and branch deployments. Common roles include core/distribution switching, server uplinks, top-of-rack fabric, and edge connectivity in mixed Cisco/Juniper/Arista environments.
What are the headline specs of the NVIDIA ConnectX-8 SuperNIC?
Key specifications for the NVIDIA ConnectX-8 SuperNIC: interface 400GbE; 3 years support; new condition; performance 400GbE/NDR InfiniBand SmartNIC with on-chip AI acceleration for network telemetry and security processing; support 3 years standard (manufacturer). Manufacturer part number MCX85346AAS-HEAT. For the full datasheet with electrical, environmental, and compliance details, contact our pre-sales engineering team.
Is the NVIDIA ConnectX-8 SuperNIC compatible with my infrastructure?
The NVIDIA ConnectX-8 SuperNIC interoperates with standard switching protocols (LACP, MLAG/VPC, 802.1Q, OSPF/BGP). For specific cross-vendor scenarios — Cisco-to-Arista MLAG peering, fabric integration with Cumulus/SONiC, or migration from legacy Catalyst — our network engineers map a compatibility plan as part of the RFQ.