Nvidia Connectx-8 Supernic Dual-Port Qsfp112infiniband: Ndr Ib (Default) Ethernet: 400gbe C8240 900-9X81q-00cn-St0
Product Details:
Brand Name: | Mellanox |
Model Number: | 900-9X81Q-00CN-ST0 |
Payment & Shipping Terms:
Minimum Order Quantity: | 1pcs |
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Price: | Negotiate |
Packaging Details: | outer box |
Payment Terms: | T/T |
Supply Ability: | Supply by project/batch |
Detail Information |
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Model NO.: | C8240(900-9X81Q-00CN-ST0) | Transmission Rate: | 400gbe |
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Ports: | Dual-Port | Function: | Lacp, Stackable, Vlan Support |
Technology: | Infiniband | Host Interface: | Gen6 X16 |
Interface Type: | Qsfp112 | Trademark: | Mellanox |
Product Description
NVIDIA ConnectX-8 SuperNIC C8240 (900-9X81Q-00CN-ST0)
Product Overview
The NVIDIA ConnectX-8 SuperNIC C8240 sets a new benchmark in high-performance networking solutions, specifically engineered for next-generation AI infrastructure and hyperscale computing environments. This cutting-edge network card delivers unprecedented 800 Gb/s bandwidth across both InfiniBand and Ethernet protocols, providing the foundation for trillion-parameter AI models and large-scale GPU clusters.
Distinguishing Features
- Dual-port configuration with 800 Gb/s aggregate bandwidth
- PCI Express Gen6 interface with multi-host support
- Comprehensive hardware offload for networking and security protocols
- Advanced telemetry and congestion control capabilities
- Enhanced security with hardware root of trust and encryption accelerators
- Precision timing synchronization for distributed applications
Advanced Technologies
The C8240 model incorporates NVIDIA's latest networking innovations including the Scalable Hierarchical Aggregation and Reduction Protocol (SHARP) for in-network computation, Accelerated Switching and Packet Processing (ASAP2) for virtualized environments, and end-to-end quality of service mechanisms. It supports both PAM4 and NRZ encoding schemes and complies with IBTA v1.7 standards for InfiniBand implementations.
Operational Methodology
This high-performance nic card functions by offloading network processing tasks from the host CPU, managing packet routing, encryption, and data transfer operations directly on the card. Through its RDMA capabilities, it enables zero-copy data transfers between systems without CPU intervention, dramatically reducing latency. The card's sophisticated architecture processes up to 16 million I/O channels concurrently while maintaining line-rate throughput across both ports.
Implementation Environments
- Artificial intelligence training and inference clusters
- High-performance computing and scientific research facilities
- Cloud service providers and hyperscale data centers
- Storage networks and computational storage solutions
- Telecommunications infrastructure and edge computing deployments
Technical Specifications
Specification | Detail |
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Product Model | C8240 (900-9X81Q-00CN-ST0) |
Total Bandwidth | 800 Gb/s (2x 400G ports) |
Host Interface | PCIe Gen6 x16 |
Form Factor | HHHL, OCP 3.0 compliant |
Protocol Support | InfiniBand, Ethernet |
Port Configuration | 2x OSFP ports |
Security Features | IPsec, MACsec, Secure Boot |
Management | NC-SI, Redfish, PLDM |
Competitive Differentiation
Compared to previous generations such as the ConnectX-6, the ConnectX-8 SuperNIC delivers double the port density and bandwidth while improving power efficiency by 40%. Its innovative architecture provides 60% lower latency for AI workloads and features enhanced programmability for custom network functions. The card's ability to handle trillion-parameter AI models makes it uniquely positioned for next-generation AI infrastructure requirements.
Support Services
We provide comprehensive support including a 3-year manufacturer warranty, global shipping with real-time tracking, and 24/7 technical consultation. Our services include custom configuration assistance, integration support, and on-site replacement options. With over $10 million in inventory, we ensure prompt delivery and reliable supply chain continuity for all your network infrastructure needs.
Frequently Asked Questions
Q: How does the ConnectX-8 compare to previous ConnectX-6 models in real applications?
A: The ConnectX-8 delivers twice the bandwidth (800G vs 400G), 40% better power efficiency, and significantly improved AI workload acceleration capabilities.
Q: Can the ConnectX-8 SuperNIC operate in existing PCIe Gen4/Gen5 servers?
A: Yes, the card maintains backward compatibility with PCIe Gen4 and Gen5 systems, though full 800G performance requires PCIe Gen6 infrastructure.
Q: What types of transceivers are compatible with this network interface card?
A: The card supports OSFP-based transceivers and both direct attach copper and fiber optic cables.
Q: Does this model support multi-host configurations?
A: Yes, the ConnectX-8 supports NVIDIA Multi-Host technology, allowing up to four hosts to share a single network interface.
Installation Considerations
- Ensure adequate chassis ventilation for optimal thermal management
- Verify server PCIe slot compatibility and physical clearance requirements
- Use manufacturer-certified cables and transceivers for guaranteed performance
- Update to latest firmware version before deployment in production environments
- Consult compatibility matrices for specific server and switch configurations
Corporate Profile

With over a decade of industry experience, we operate extensive manufacturing facilities supported by a skilled technical team. As an authorized distributor of leading networking brands including Mellanox (now NVIDIA Networking), Ruckus, Aruba, and Extreme Networks, we supply genuine network switches, network cards, wireless solutions, and connectivity products.
Our $10 million inventory ensures immediate availability of the ConnectX-8 SuperNIC and other products, supported by 24/7 customer service and technical assistance. We have established a strong reputation for reliability and competitive pricing in global markets, serving enterprise, data center, and service provider customers worldwide.