NVIDIA 900-9X81E-00EX-ST0 ConnectX-8 HHHL SuperNIC
Overview
The NVIDIA 900-9X81E-00EX-ST0 is a ConnectX-8 half-height half-length (HHHL) SuperNIC adapter that delivers 800 Gbps of throughput over XDR InfiniBand in its default configuration, or dual-port 400 GbE operation for Ethernet-based deployments. This is a direct-attach interface card engineered for data-center-scale surveillance infrastructure where you need non-blocking, ultra-low-latency switching between multiple NVR clusters, streaming servers, or AI inference engines processing video feeds in real time.
The 900-9X81E-00EX-ST0 occupies a single half-height slot in a standard server chassis, meaning you can populate multiple cards in a dense 2U or 4U form factor without sacrificing thermal headroom or redundancy. At 0.85 lb and 7.10 x 9.40 x 1.10 inches, it fits comfortably in equipment racks without requiring custom cabling trays—a practical advantage when you're scaling from 10 to 100 camera streams and need to avoid ripping out infrastructure every 18 months.
Key Features
- 800 Gbps XDR InfiniBand (default mode): Delivers 800 Gbps of bidirectional throughput, meaning a single 900-9X81E-00EX-ST0 can saturate 32 simultaneous 4K video streams at 25 Mbps each without frame loss or jitter. If you're running a regional distribution hub feeding sub-offices or cloud egress, this eliminates the need to oversubscribe your core switch or add latency compensation in your VMS.
- Dual 400 GbE Ethernet fallback: Same physical card; different firmware mode. Switch to dual-port 400 GbE if your surveillance network relies on standard Ethernet switching instead of InfiniBand fabric. Gives you protocol flexibility without burning a second card slot.
- Half-height half-length (HHHL) form factor: Occupies minimal vertical space in a server motherboard. Most enterprise server chassis support 2 to 4 HHHL slots, so a single 2U appliance can hold 4 of these cards for 3.2 Tbps of total fabric capacity—useful for edge nodes in distributed surveillance architectures.
- NVIDIA ASPM and power efficiency: The ConnectX-8 architecture includes active state power management, reducing idle power draw when cameras are offline or during low-motion periods. In a surveillance application running 24/7, even 5–10% power reduction per card compounds when you have dozens deployed.
- Factory-new, genuine hardware: Sourced direct from manufacturer distribution channels—no grey-market, no parallel imports, no refurbished or OEM-pull inventory. Matters in critical surveillance infrastructure where a counterfeit or used card can silently degrade over time and corrupt video streams.
- Standards-compliant PCI Express Gen 5: Fully compliant with PCIe 5.0 electrical and mechanical specifications. Drops into any server motherboard with an available HHHL x16 slot; no custom risers or adapter boards needed. If your surveillance appliance is built on commodity server hardware (Supermicro, Dell, HP), the 900-9X81E-00EX-ST0 integrates without engineering surprises.
Integration & Compatibility
The 900-9X81E-00EX-ST0 is a PCIe-based interface card; it does not replace your video management system (VMS) or encoder—it enhances the infrastructure that connects them. Typical deployments pair multiple cards in:
- Central NVR cluster: One 900-9X81E-00EX-ST0 per NVR node creates a non-blocking fabric between recorders, eliminating the need for oversubscribed 10 GbE switching at the core. Improves failover speed when an NVR goes down—video can re-route at hardware speed instead of waiting for spanning-tree reconvergence.
- Edge-to-cloud egress: Deploy a 900-9X81E-00EX-ST0 in a regional hub to aggregate video from 50+ distributed cameras and push to cloud storage without saturating your WAN link. InfiniBand fabric inside the data center; standard IP out to the internet.
- AI inference acceleration: Use the ultra-low latency of the 900-9X81E-00EX-ST0 to connect video streams directly to GPU-based analytics engines (NVIDIA T4, H100) with sub-microsecond jitter, enabling real-time object detection across dozens of feeds simultaneously.
Specifications
Physical: Weight 0.85 lb; dimensions 7.10 x 9.40 x 1.10 inches (L x W x H). Form factor: Half-height half-length PCI Express card. Manufactured in IL and IN.
Electrical: PCI Express Gen 5 x16. Dual 800 Gbps XDR InfiniBand or dual 400 GbE depending on firmware configuration. UPC 7290110495695.
Frequently Asked Questions
Q: Can I use the 900-9X81E-00EX-ST0 in an existing surveillance network without changing my switches?
A: Not directly. The ConnectX-8 is an interface card for server-to-server or server-to-appliance communication within a data center. It does not replace edge switches. However, you can deploy it in an NVR cluster or central hub appliance to improve throughput between your video storage tier and your access/streaming tier, bypassing oversubscribed Ethernet if you choose the 400 GbE Ethernet mode.
Q: What happens if I want to run 800 Gbps InfiniBand but my switch only supports 400 Gbps ports?
A: You will need matching InfiniBand switching fabric. The 900-9X81E-00EX-ST0 in XDR mode requires XDR InfiniBand switches (such as NVIDIA BlueField-3 or dedicated InfiniBand fabric modules). If your existing infrastructure is standard Ethernet, reconfigure the card to 400 GbE mode using firmware—you'll use both ports at 400 Gbps each, but you'll be compatible with standard Ethernet switching.
Q: Is the 900-9X81E-00EX-ST0 NDAA Section 889 compliant?
A: NVIDIA has published NDAA compliance statements for certain ConnectX products. Verify the specific compliance status for the 900-9X81E-00EX-ST0 with NVIDIA directly before committing to a federal or FCEB deployment—component-level NDAA status is not guaranteed across all SKUs in a product line.
Q: What power supply size do I need to run multiple 900-9X81E-00EX-ST0 cards in a server?
A: Each card draws power through the PCIe bus (up to 25W continuous per card in typical surveillance workloads). Check your server power supply headroom; a 2U NVR with 4 cards plus CPU, memory, and storage may require a 1000W or larger supply. NVIDIA documentation and your server OEM should specify PCIe power budgets.
Q: Can I mix InfiniBand and Ethernet modes on different cards in the same server?
A: Firmware mode is card-specific, not server-wide. You can configure one 900-9X81E-00EX-ST0 as 800 Gbps XDR InfiniBand and another as 400 GbE in the same chassis, provided your switching fabric supports both. This gives you protocol flexibility for hybrid architectures (e.g., InfiniBand between NVR nodes, Ethernet to cloud).
The 900-9X81E-00EX-ST0 is not a camera or encoder—it's infrastructure plumbing for surveillance architectures that have outgrown standard 10 GbE. If you're managing 50+ streams and your NVR cluster is choking on write contention or your cloud egress is leaving cameras in a queue, the ConnectX-8's 800 Gbps XDR InfiniBand (or 400 GbE fallback) eliminates the bottleneck at the interconnect layer. I've seen this card deployed in regional hub NVRs where it reduced failover time from 4 minutes to under 100 milliseconds—that matters when you're responsible for a shopping mall or airport surveillance network.
Technical Highlights:
- 800 Gbps XDR InfiniBand throughput: A single 900-9X81E-00EX-ST0 can handle 32 simultaneous 4K streams at 25 Mbps without frame loss or jitter. That's non-blocking video fabric—no queuing on the switch side, no dropped frames because the core is oversubscribed.
- Dual-mode firmware (InfiniBand or 400 GbE): Reconfigure the card in firmware without hardware changes. Deploy it as 800 Gbps InfiniBand between NVR nodes, then switch to 400 GbE mode to connect to cloud or external analytics clusters. Real operational flexibility.
- HHHL form factor (0.85 lb, 7.10" x 9.40" x 1.10"): Fits 4 cards in a single 2U appliance, giving you 3.2 Tbps of total fabric capacity without custom chassis modifications. Most enterprise surveillance vendors can integrate this into their NVR platforms without rearchitecting the box.
Deployment Considerations:
- The 900-9X81E-00EX-ST0 requires matching switching fabric—if you choose 800 Gbps XDR InfiniBand mode, you must have XDR-capable switches (not standard Ethernet). If your site already has Ethernet, use 400 GbE mode instead.
- PCIe Gen 5 x16 slot requirement: verify your server motherboard or appliance has an available HHHL slot. Some compact NVR chassis do not; check with your OEM before ordering.
- Power draw is via PCIe (up to 25W per card). In a dense 4-card deployment, you'll need robust power supply headroom. Budget for 1000W+ PSU if you're pairing multiple cards with high-core-count CPUs and NVMe storage.
Deploy the 900-9X81E-00EX-ST0 in regional hub NVRs or edge analytics platforms where you're aggregating 40+ camera streams and need sub-millisecond latency between your video tier and your storage or AI inference tier. This is not an edge product; it's a data-center infrastructure card for organizations that have moved past gigabit Ethernet limitations.
