FREE SHIPPING on Orders Over US$99

English English

NVIDIA MCX512A-ACAT Mellanox ConnectX®-5 EN Network Interface Card, 25GbE Dual-port SFP28, PCIe Gen 3.0 x8, Tall Bracket
P/N: MCX512A-ACAT
Price Upon Request
2
Reviews
2
Questions
safeguard
4-Year Warranty
30-Day Returns
30-Day Exchange
(0 In Stock)

Product Highlights

Dual-Port 25GbE SFP28 for High-Speed Ethernet Connectivity
Sub-750ns Latency with 200M Messages/Second Throughput
Hardware-Offloaded Overlay Networks (VXLAN/NVGRE) for Virtualized Environments
PCIe 3.0 x8 Interface with Gen 2/3 Backward Compatibility
End-to-End QoS & Congestion Control (DCB/PFC/ETS)
RoCE v1/v2 Support for Low-Latency RDMA over Ethernet
See more
NVIDIA MCX512A-ACAT Mellanox ConnectX®-5 EN Network Interface Card, 25GbE Dual-port SFP28, PCIe Gen 3.0 x8, 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
SFP28
Data Rate
1, 10, 25GbE
Host Interface
PCIe 3.0×8
Input Voltage
12v
Max. Power Consumption
15.1W
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
Product
Product
Product
Product
Product
Product
Product
Product
Product
Product
Questions & Answers
edit icon Ask a question
All (2) Management (1)Scalability (1)
Q:

Are these NICs suitable for AI and HPC workloads?

by i***m on 2025-07-21 15:36:54

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

like icon Helpful 0
comment icon Comment 0
Q:

What port types are available on NVIDIA NICs?

by Z***m on 2025-07-21 15:24:53

A:

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

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

like icon Helpful 0
comment icon Comment 0
Customer Reviews
edit icon Write a review
All (2) Performance (1)Compatibility (1)
x
x***m
2025-04-18 17:11:14
Confirmed Purchase
5.0

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

link icon Helpful 0
comment icon Comment 0
t
t***m
2025-04-12 22:47:53
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.

link icon Helpful 0
comment icon Comment 0
Explore Our Extended Product Line