NVIDIA
NVIDIA ConnectX-6 Dx MCX623106AN-CDAT Network Adapter
Best high-performance network adapter for demanding data center infrastructure.
The NVIDIA ConnectX-6 Dx MCX623106AN-CDAT is a high-performance SmartNIC designed for demanding data center environments. It offers dual 100 Gigabit Ethernet ports via a PCIe 4.0 x16 interface, ensuring exceptional throughput and low latency. This network adapter accelerates critical applications with extensive hardware offloads for virtualization, networking, and storage, maximizing ROI. It's an ideal solution for cloud infrastructure, big data analytics, and high-performance computing, providing robust security and flexibility with RoCE v1/v2 support and included installation brackets.
$1391.00
More ConnectX Options
Owner Satisfaction
4.7
/ 5
Category Rank
14
/ 961
#14 in Network Cards & Adapters
Price vs Category Average
+38%
Above average
Ports
56
/ Dual-Port QSFP
Who it's for
- Data center architects managing massive high-throughput traffic
- System administrators seeking to maximize host CPU efficiency
- Cloud providers requiring secure multi-tenant network isolation
Who should skip it
- Small businesses operating on limited hardware budgets
- IT teams lacking specialized high-speed networking expertise
- Operators managing servers with restricted cooling capacity
Performance breakdown
Data Throughput
Dual 100GbE ports deliver massive bandwidth for the most demanding workloads.
CPU Offloading
Advanced hardware acceleration significantly reduces host processor overhead during heavy traffic.
Latency Performance
RoCE support ensures near-instant data transfer for time-sensitive enterprise applications.
Interface Versatility
PCIe 4.0 x16 connectivity provides a future-proof foundation for modern server architectures.
Virtualization Efficiency
Optimized packet processing streamlines complex virtual network environments with ease.
System Compatibility
Broad OS support ensures seamless integration into diverse data center ecosystems.
Key Specs
Ports
Dual-Port QSFP56
Host Interface
PCIe 4.0 x16
Supported Ethernet Speeds
100/50/40/25/10/1GbE
Controller
Mellanox Technologies MT2892 Family ConnectX-6 Dx
Dimensions
142.00mm x 68.90mm
Operating Temperature
0 to 55 °C (32 to 131 °F)
OS Support
Windows, RHEL/CentOS, VMware, FreeBSD, OFED, WinOF-2
Warranty
1-Year Warranty
Features
- Dual 100GbE ports for high-speed connectivity
- Hardware offloads reduce CPU utilization
- Low latency RoCE for demanding services
- Accelerated packet processing for virtual networks
- Extensive network virtualization support
- Comprehensive storage acceleration
- High DPDK message rates
- Meets multiple ISO quality standards
What customers say
Customers overwhelmingly praise the NVIDIA ConnectX-6 Dx for its unmatched performance in demanding environments like data centers and HPC. The core focus is on its exceptional reliability and high throughput, which are crucial for virtualization and storage workloads. Users frequently note that advanced hardware offloads significantly boost efficiency by saving CPU resources. While the adapter is considered a necessary, high value investment for mission critical applications, its premium price and configuration complexity are noted drawbacks. Professionals agree that despite the steep learning curve, the superior performance and robust reliability fully justify the investment for infrastructure where compromise is not an option.
Know before you buy
This adapter requires a PCIe 4.0 x16 slot to achieve its full performance potential. While it is physically compatible with other PCIe generations, using an older slot may limit the maximum throughput.
Yes, the ConnectX-6 Dx is backward compatible. It supports 100, 50, 40, 25, 10, and 1GbE speeds, making it versatile for various network environments.
The card supports a wide range of enterprise operating systems, including Windows, RHEL/CentOS, VMware, and FreeBSD. It also supports standard driver frameworks like OFED and WinOF-2.
The card features extensive hardware offloads for networking, storage, and virtualization tasks. By handling these processes directly on the adapter, it frees up your server's CPU to focus on running your primary applications.
Absolutely. It is specifically designed for low-latency environments and includes robust support for RoCE v1 and v2, which is essential for high-performance computing and efficient data transfer.
No, this specific model does not support Jumbo Frames or Wake on LAN functionality. Please ensure your network architecture does not require these features before purchasing.
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