Mellanox ConnectX3 40GbE Dual Port QSFP+ Network Card
SKU: 548457894-1-1
You save ₹15,000
Inclusive of all taxes
Razorpay Verified Secure Payment
Payment Methods
Trusted by Businesses Across India
Genuine Products
Sourced from authorized channels
Quality Checked
On every order, every time
PAN India Delivery
Shipped nationwide
Warranty
Where applicable, per manufacturer
Highlights
The Mellanox ConnectX3 40GbE Network Card is a high-performance dual port QSFP+ adapter designed for enterprise servers, HPC, and cloud data centers.
Specifications
| Interface | PCI Express 3.0 x8 (backward compatible with PCIe 2.0 & 1.1) |
|---|---|
| Ports | Dual 40GbE QSFP+ (up to 80Gbps aggregate throughput) |
| Compliance | QSFP+ MSA Spec Rev 1.0, IEEE Std. 802.3 |
| Protocols Supported | RoCE, iSCSI, FCoE, TCP/IP stateless offload |
| InfiniBand Support | FDR speeds up to 56Gbps (auto-negotiation for FDR-10, DDR, SDR) |
| Virtualization Support | SR-IOV, VMQ, up to 127 virtual functions (OS dependent) |
| Latency | As low as 1 microsecond (1µs) with RDMA over 40GbE |
| Form Factor | Low-profile card with 2U bracket included |
| SKU | 548457894-1-1 |
Description
Mellanox ConnectX3 40GbE Network Card – Dual Port QSFP+ Adapter
The Mellanox ConnectX3 40GbE Network Card is a PCIe x8 dual-port 40G QSFP+ adapter built on PCI Express 3.0 technology, designed for performance-driven server and storage applications. It delivers high-bandwidth, ultra-low latency, and industry-leading Ethernet connectivity, making it a top choice for Enterprise Data Centers, High-Performance Computing (HPC), and Embedded Environments.
From clustered databases and web infrastructure to high-frequency trading and AI workloads, the Mellanox ConnectX3 provides the speed and reliability needed to improve throughput, reduce latency, and maximize server efficiency.
Advanced Networking for Demanding Applications
The ConnectX3 EN architecture significantly improves network performance by increasing available bandwidth while offloading network processing from the CPU. This makes it especially effective in virtualized server environments, where efficiency and low overhead are critical.
Applications such as real-time analytics, financial services, and large-scale storage networks benefit from faster data access, sub-microsecond latency, and the ability to handle more users per server.
Detailed Specifications
-
Interface: PCI-Express 3.0 x8 (backward compatible with PCIe 2.0 & 1.1)
-
Ports: Dual 40GbE QSFP+ ports (80Gbps aggregate throughput)
-
Compliance: QSFP+ MSA Spec Rev 1.0, IEEE Std. 802.3
-
Protocols Supported: RoCE, iSCSI, FCoE, TCP/IP stateless offload
-
InfiniBand Support: FDR speeds up to 56Gbps (auto-negotiation for FDR-10, DDR, SDR)
-
Form Factor: Low-profile card with 2U bracket included
-
Virtualization Support: SR-IOV, VMQ, up to 127 virtual functions (OS dependent)
-
Acceleration Features: CORE-Direct offload, GPUDirect offload, traffic steering across multiple cores
-
Compatibility: Copper & optical cables, QSA adapters for SFP+ support
-
Latency: As low as 1 microsecond (1µs) with RDMA over 40GbE
Key Features of Mellanox ConnectX3 40GbE Network Card
-
Dual 40GbE QSFP+ ports for maximum bandwidth
-
Low-latency RDMA support for HPC workloads
-
RoCE and iSCSI support for storage acceleration
-
Compatible with Linux, MikroTik RouterOS, Windows Server, and VMware ESXi
-
Energy-efficient architecture to reduce power costs
-
Backward compatibility with 10GbE via QSFP+ breakout cables
-
Support for SR-IOV virtualization in Hyper-V and KVM
Why Choose Mellanox ConnectX3?
The Mellanox ConnectX3 40GbE Network Card is trusted in mission-critical deployments worldwide. Its dual-port flexibility and scalability make it perfect for:
-
Data centers needing high-bandwidth uplinks
-
Enterprises deploying virtualized servers
-
HPC environments requiring ultra-low latency
-
Cloud service providers scaling multi-tenant workloads
When you buy from Arnav Infosystem, you benefit from:
-
✔ 100% Original Mellanox Adapters
-
✔ Fast delivery across India
-
✔ Expert technical support for configuration
Applications of Mellanox ConnectX3 40GbE Network Card
-
Enterprise Data Centers: Maximize server utilization and reduce networking bottlenecks
-
Cloud Infrastructure: Enable scalable and reliable virtualized environments
-
High-Performance Computing (HPC): Ensure sub-microsecond latency in cluster interconnects
-
Storage Networking: Leverage RoCE and iSCSI for high-speed SAN/NAS access
-
Financial Services: Support high-frequency trading and low-latency transactions
Benefits of Using Mellanox ConnectX3
-
Future-Ready Networking: 40GbE ports deliver the scalability required for tomorrow’s workloads.
-
Improved Server Efficiency: Offloads CPU cycles by handling network processing at the adapter level.
-
Cross-Platform Compatibility: Works seamlessly with Dell, HP, IBM, and Supermicro servers.
-
Low Latency for Critical Workloads: Ideal for AI/ML, HPC, financial trading, and large databases.
Frequently Asked Questions (FAQ)
Q1: Is the Mellanox ConnectX3 compatible with VMware ESXi?
👉 Yes, it is fully supported and widely used in ESXi virtualization.
Q2: Can I use this card for storage networking?
👉 Absolutely. With RoCE and iSCSI support, it accelerates SAN and NAS traffic.
Q3: Does it support 10GbE?
👉 Yes. Using QSFP+ breakout cables, it can connect to 10GbE environments.
Q4: Which servers are compatible?
👉 Works with Dell, HP, Supermicro, IBM, and other enterprise-grade servers.
Q5: Is it suitable for MikroTik RouterOS?
👉 Yes, the Mellanox ConnectX3 works with MikroTik RouterOS, making it a strong choice for ISPs and advanced routing setups.
External Reference
For official technical documentation, visit:
👉 NVIDIA Mellanox Ethernet Adapters
Buying Guide
The Mellanox ConnectX-3 is a step up from standard 10GbE adapters — dual 40GbE QSFP+ ports, up to 80Gbps aggregate throughput, and sub-microsecond RDMA latency, aimed at HPC clusters, high-frequency trading, and storage-heavy virtualization hosts rather than a general office server refresh. If that's the workload you're sizing for, here's the real specification and compatibility detail before you order: genuine Mellanox hardware, GST-invoiced, shipped fast across India. Because this card serves a narrower, more specialized workload than a general-purpose 10GbE NIC, it's worth confirming your actual bandwidth and latency requirement before ordering — a workload that only needs 10GbE is usually better served (and better priced) by an Intel X520 or X710 instead, while genuine 40GbE, RDMA-sensitive workloads are exactly where this card earns its price premium.
Server Compatibility
This card uses a standard PCIe 3.0 x8 slot (backward compatible with PCIe 2.0/1.1) — it fits any server with a free PCIe x8+ slot, and is already used in production across these vendors:
- Dell PowerEdge
Standard PCIe x8+ slot compatibility across PowerEdge rack servers.
- HP ProLiant
Standard PCIe x8+ slot compatibility across ProLiant rack servers.
- Lenovo ThinkSystem
Standard PCIe x8+ slot compatibility across ThinkSystem rack servers.
- Supermicro
Standard PCIe x8+ slot compatibility across Supermicro rack/tower boards.
Virtualization & OS Compatibility
SR-IOV and VMQ support (up to 127 virtual functions depending on OS) make the ConnectX-3 a common choice for dense, storage-heavy virtualization hosts:
- VMware ESXi
Fully supported and widely deployed in ESXi virtualization environments.
- Proxmox VE
Works via the mainline Linux mlx4 driver Proxmox's kernel ships natively.
- Microsoft Hyper-V
SR-IOV virtualization supported under Hyper-V.
- Linux (generic)
Supported by the in-kernel mlx4 driver across major distributions.
- MikroTik RouterOS
Supported — a real option for ISPs running high-throughput RouterOS routing setups.
Official Intel Drivers & Documentation
Source drivers and firmware from NVIDIA (which now owns Mellanox) rather than a third-party mirror. We don't host driver files ourselves — use the official reference manual below for technical documentation and driver guidance, and confirm the firmware version before deploying it in a production cluster.
NVIDIA Mellanox ConnectX-3 Official User ManualCompatible SFP+ Modules
The ConnectX-3's QSFP+ ports accept these connection types, including a path down to 10GbE:
| Type | Range | Use Case |
|---|---|---|
| QSFP+ DAC / optical | Varies by cable | Native 40GbE server-to-switch or server-to-server connections. |
| QSFP+ to SFP+ (QSA adapter) | Varies by module | Steps a 40GbE port down to connect to 10GbE SFP+ switch ports. |
| QSFP+ breakout cable | Varies by cable | Splits one 40GbE port into 4× 10GbE connections for 10GbE environments. |
Installation Guide
- 1Power down and open the chassis
Shut the server down fully and disconnect power before opening the case.
- 2Ground yourself before handling the card
Use an anti-static wrist strap or touch a grounded metal surface first.
- 3Insert into a free PCIe x8 (or larger) slot
Seat the card fully and secure the 2U bracket.
- 4Connect QSFP+ cables or QSA/breakout adapters
Match the adapter/cable type to your switch's actual port speed (40G native or 10G via QSA).
- 5Power on and install the driver
Install the current Mellanox/NVIDIA driver (mlx4) for your OS if not already present.
- 6Verify link status
Confirm the negotiated link speed matches what you expect (40G, or 10G if using a QSA/breakout).
Troubleshooting
Card isn't detected after installation.
Reseat the card and confirm the PCIe slot supports x8 — some boards downgrade certain slots to x4/x1.
Port only links at 10G instead of 40G.
Confirm you're using a native 40G QSFP+ cable, not a QSA adapter or breakout cable, if 40G is what you need.
High latency despite RDMA being enabled.
Confirm RDMA/RoCE is actually enabled in the driver and OS network stack, not just supported by the hardware.
SR-IOV virtual functions aren't appearing.
Enable SR-IOV in BIOS/UEFI first, then confirm the hypervisor's SR-IOV support is enabled for this device.
MikroTik RouterOS doesn't recognize the card.
Confirm your RouterOS version supports this NIC and that firmware on the card itself is current.
Frequently Asked Questions
Where can I buy the Mellanox ConnectX-3 40GbE card in India?
Arnav Infosystem stocks it as genuine, GST-invoiced hardware shipped fast across India.
What is the Mellanox ConnectX-3 price in India?
Current pricing is shown on this page — contact us or use Bulk Quote for volume orders.
Is it compatible with VMware ESXi?
Yes, it's fully supported and widely used in ESXi virtualization environments.
Can I use this card for storage networking?
Yes — with RoCE and iSCSI support, it accelerates SAN and NAS traffic.
Does it support 10GbE environments?
Yes, using QSFP+ breakout cables or a QSA adapter, it can connect to 10GbE switch ports.
Which servers is it compatible with?
Any server with a free PCIe 3.0 x8+ slot, including Dell, HP, Lenovo, and Supermicro rack servers.
Is it suitable for MikroTik RouterOS?
Yes — it works with MikroTik RouterOS, making it a strong option for ISPs running high-throughput routing setups.
What's the real-world latency?
As low as 1 microsecond with RDMA over 40GbE, according to the manufacturer specification.
Is this new or used hardware?
Contact us to confirm the current condition and warranty terms for this specific listing before ordering.
Can I get bulk pricing for multiple cards?
Yes — use the Bulk Quote option and we'll price your requirement as a single order.
Reviews
Be the first to review.
