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NVIDIA MCX516A-CCAT Mellanox ConnectX®-5 EN Network Interface Card, 100GbE Dual-port QSFP28, PCIe Gen 3.0 x16, Tall Bracket
P/N: MCX516A-CCAT
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Product Highlights

Dual-Port 100GbE QSFP28 for Adaptive 1/10/25/40/50/100 GbE Speeds
Sub-750ns Latency with 200M Messages/Second Throughput
Hardware-Offloaded VXLAN/NVGRE for Virtualized Network Efficiency
PCIe 3.0 x16 Interface with Gen 2 Backward Compatibility
DCB/PFC/ETS-Based QoS for Predictable Low-Latency Performance
RoCE v2 & NVMe-oF Support for Storage-Optimized Workloads
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NVIDIA MCX516A-CCAT Mellanox ConnectX®-5 EN Network Interface Card, 100GbE Dual-port QSFP28, PCIe Gen 3.0 x16, Tall Bracket
ConnectX-5 Ethernet adapter cards provide high performance and flexible solutions with up to two ports of 100GbE connectivity, 750ns latency, up to 200 million messages per second (Mpps), and a recordsetting 197Mpps when running an open source Data Path Development Kit (DPDK) PCIe (Gen 4.0). For storage workloads, ConnectX-5 delivers a range of innovative accelerations, such as Signature Handover (T10-DIF) in hardware, an embedded PCIe Switch, and NVMe over Fabric target offloads. ConnectX-5 adapter cards also bring advanced Open vSwitch offloads to telecommunications and cloud data centers to drive extremely high packet rates and throughput with reduced CPU resource consumption, thus boosting data center infrastructure efficiency. ConnectX-5 adapter cards are available for PCIe Gen 3.0 and Gen 4.0 servers and provide support for 1, 10, 25, 40, 50 and 100 GbE speeds in stand-up PCIe cards, OCP 2.0, and OCP 3.0 form factors. ConnectX-5 cards also offer advanced Mellanox Multi-Host® and Mellanox Socket Direct® technologies.
Specifications
Brand
NVIDIA
Technology
Ethernet
Ports
Dual
Port Type
QSFP28
Data Rate
1, 10, 25, 40, 50, 100GbE
Host Interface
PCIe 3.0×16
Input Voltage
12v
Max. Power Consumption
24.6W
Operating Temperature
0 to 55°C (32 to 131℉)
Storage Temperature
-40 to 70°C (-40 to 158℉)
Dimensions (W×D)
68.90×142.24mm
Controller
ConnectX-5
Certification
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Questions & Answers
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All (2) Management (1)Scalability (1)
Q:

What port types are available on NVIDIA NICs?

by O***m on 2025-07-21 15:35:18

A:

They support a variety of speeds and interfaces including 10G, 25G, 100G, and 200G via SFP28, QSFP28, and QSFP-DD.

by Helpful on 2025-07-21 16:58:06

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Q:

Are these NICs suitable for AI and HPC workloads?

by A***m on 2025-07-21 15:30:46

A:

Yes, especially models like ConnectX-6 and ConnectX-7, which are optimized for high-throughput, low-latency environments.

by Helpful on 2025-07-21 16:57:19

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Customer Reviews
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All (2) Performance (1)Compatibility (1)
Y
Y***m
2025-07-01 06:59:04
Confirmed Purchase
5.0

Zero packet drops even during stress tests. It's the most stable NIC we've ever deployed in our data center.

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U
U***m
2025-06-23 21:48:37
Confirmed Purchase
5.0

These NICs worked out-of-the-box with our Linux-based servers and major hypervisors including VMware and Proxmox.

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