SN37B01923 Intel 2-Port 25Gb PCI-E SFP28 Low Profile Ethernet Server Network Adapters

Intel SN37B01923 2-Port 25 Gigabit Ethernet Server Adapter

The Intel SN37B01923 is a high-performance dual-port 25 Gigabit Ethernet server network adapter engineered for enterprise data centers, cloud computing, virtualization platforms, and high-bandwidth networking environments. Featuring a low-profile PCI Express design with dual SFP28 ports, this enterprise-class network interface card (NIC) delivers exceptional throughput, reduced latency, and reliable connectivity for mission-critical workloads. Its support for PCIe 4.0 x8 ensures maximum bandwidth between the server and network infrastructure while maintaining compatibility with PCIe 3.0 systems.

General Information

• Manufacturer: Intel
• Part Number: SN37B01923
• Product Type: Ethernet Server Adapter
• Form Factor: Low Profile Plug-in Card
• Connectivity Technology: Wired

High-Speed Network Benefits

• Dual 25 Gigabit Ethernet connectivity
• Improved application responsiveness
• High-bandwidth data transmission
• Reduced network bottlenecks
• Optimized server communication

Advantages of Dual-Port Connectivity

• Supports redundant network paths
• Enables bandwidth aggregation
• Improves network availability
• Facilitates load balancing
• Enhances business continuity

PCI Express Features

• PCI Express 4.0 x8 interface
• Backward compatibility with PCIe 3.0
• High-speed server communication
• Low-latency data processing
• Efficient bandwidth utilization

Supported Data Protocols

• Gigabit Ethernet (GigE)
• 10 Gigabit Ethernet (10GbE)
• 25 Gigabit Ethernet (25GbE)

Supported Network Protocols

• iSCSI
• iWARP
• NFS (Network File System)

Intel SN37B01923 2-Port Ethernet Server Adapter Overview

Enterprise-Grade 25GbE Networking Adapter Class Definition

The category of Intel SN37B01923 2-Port 25 Gigabit PCI-E SFP28 Low Profile Ethernet Server Network Adapters represents a high-performance class of server networking solutions engineered for modern data-intensive infrastructures. These adapters are designed to deliver ultra-low latency, high throughput, and scalable bandwidth efficiency in enterprise servers, cloud computing environments, virtualization clusters, and hyperscale data centers. Built on advanced Intel networking controller architecture, this category focuses on enabling 25 Gigabit Ethernet connectivity per port while maintaining compatibility with PCI Express host interfaces and SFP28 optical transceiver ecosystems.

This category is positioned within the broader evolution of Ethernet technologies transitioning from 1GbE and 10GbE to 25GbE as a cost-efficient and performance-optimized upgrade path. The dual-port configuration ensures redundancy, link aggregation, and improved workload distribution across virtual machines and containerized applications.

Core Architecture and Engineering Design

Intel Network Controller Integration

At the heart of this category lies Intel’s advanced Ethernet controller architecture, designed to optimize packet processing efficiency and reduce CPU overhead. The controller integrates hardware offloading capabilities such as checksum offload, segmentation offload, and interrupt moderation, allowing servers to handle higher traffic volumes without proportional increases in processor utilization.

Dual-Port High-Density Connectivity

The dual-port configuration in the SN37B01923 category enables simultaneous 25GbE connections, supporting both load balancing and failover redundancy. This architecture is essential for mission-critical environments where continuous network availability is required. Each port operates independently, allowing parallel data streams and enhanced throughput scalability.

PCI Express Host Interface Design

This category leverages the PCI-E interface to ensure high-speed communication between the network adapter and the server motherboard. The PCI Express lane allocation ensures sufficient bandwidth for dual 25GbE ports, minimizing bottlenecks and maximizing packet transfer efficiency. The design is optimized for compatibility with modern server PCIe slots, ensuring seamless integration into enterprise-grade hardware systems.

SFP28 Optical and Direct Attach Connectivity Ecosystem

25 Gigabit SFP28 Standard Implementation

The SFP28 interface standard is a critical component of this category, enabling 25Gbps per channel data transmission. It is a direct evolution of the SFP+ form factor, maintaining physical similarity while significantly increasing data throughput. The SN37B01923 adapter class supports a wide range of SFP28 optical transceivers and direct attach copper (DAC) cables, providing flexibility in data center cabling architecture.

Optical Transceiver Compatibility

Adapters in this category are compatible with short-range, long-range, and extended-range optical modules. These transceivers support varying distances depending on fiber type, including multimode and single-mode fiber deployments. This flexibility allows integration into both intra-rack and inter-building network topologies.

Direct Attach Copper Integration

DAC cables offer a cost-effective and low-latency alternative to optical transceivers. Within this category, DAC support ensures simplified deployment for short-distance server-to-switch connections, reducing power consumption and overall infrastructure complexity.

Low Profile Form Factor Engineering

Space-Optimized Server Deployment

The low profile bracket design of this category is optimized for dense server environments where rack space efficiency is critical. It allows installation in 1U and 2U rack servers without interfering with adjacent PCIe slots or airflow pathways. This form factor is particularly important in blade servers and compact edge computing nodes.

Thermal-Aware Mechanical Design

The physical layout of the adapter includes optimized heat dissipation pathways that align with server chassis airflow systems. This ensures stable performance under sustained high-bandwidth workloads, reducing thermal throttling risks and maintaining consistent network throughput.

Industrial Durability Standards

Adapters in this category are manufactured to withstand continuous enterprise operation environments, including 24/7 workloads, elevated ambient temperatures, and vibration-prone data center conditions. The low profile bracket is reinforced for mechanical stability and long-term reliability.

Performance Characteristics and Optimization Features

High Throughput Packet Processing

The SN37B01923 category is engineered to support line-rate packet processing at 25Gbps per port. This enables efficient handling of large-scale data transfers, including database replication, virtualization traffic, and distributed storage synchronization. The architecture minimizes packet loss under peak load conditions.

Hardware Offload Capabilities

Key offload features include TCP segmentation offload, large receive offload, and checksum offloading. These capabilities reduce CPU intervention in network processing, freeing compute resources for application-level workloads.

Interrupt Moderation and Latency Control

Advanced interrupt moderation techniques allow dynamic balancing between latency and throughput. This is particularly beneficial in environments requiring both high responsiveness and sustained throughput, such as financial trading systems and real-time analytics platforms.

Virtualization and Cloud Infrastructure Integration

SR-IOV and Virtual Function Support

The category supports Single Root I/O Virtualization (SR-IOV), enabling a single physical adapter to be partitioned into multiple virtual functions. This allows multiple virtual machines to directly access network hardware resources, reducing hypervisor overhead and improving network efficiency in virtualized environments.

Cloud-Native Workload Optimization

In cloud environments, this adapter category supports microservices architectures, container orchestration platforms, and distributed compute frameworks. The dual-port design enhances east-west traffic handling in clustered deployments.

Multi-Tenant Network Isolation

Virtual function segmentation enables secure multi-tenant environments where network traffic isolation is critical. Each virtual machine or container can be assigned dedicated bandwidth resources.

Data Center Networking Architecture Role

Leaf-Spine Network Topology Integration

The SN37B01923 category is widely deployed in leaf-spine network architectures, where consistent low-latency interconnectivity between servers and switches is required. The 25GbE speed tier provides an optimal balance between cost efficiency and performance scalability.

High-Density Server Connectivity

In hyperscale environments, each server may require multiple high-speed connections. The dual-port configuration supports redundancy and traffic segmentation, allowing separation of storage and compute traffic across different logical networks.

Bandwidth Aggregation Strategies

Link aggregation techniques such as LACP are commonly used with this category to combine multiple 25GbE links into a single logical channel, increasing throughput and ensuring redundancy.

Storage Networking and High-Speed Data Transfer

NVMe over Fabrics Compatibility

This category supports modern storage networking protocols such as NVMe over Fabrics, enabling ultra-low latency access to distributed storage systems. This is essential for high-performance computing and database-intensive workloads.

iSCSI and Ethernet Storage Integration

Traditional storage protocols such as iSCSI benefit from the increased bandwidth provided by 25GbE interfaces, significantly improving storage access times and throughput in SAN environments.

Distributed File System Optimization

In distributed storage systems, this adapter category enhances replication speed and data synchronization across nodes, improving fault tolerance and system resilience.

Security and Network Isolation Features

Hardware-Level Security Enhancements

The category includes hardware-based security features that support secure packet processing and reduce exposure to malicious traffic. These include secure boot support, firmware integrity validation, and hardware root-of-trust integration.

Traffic Segmentation and Filtering

Advanced filtering capabilities allow administrators to define traffic segmentation rules at the hardware level, reducing reliance on software-based filtering mechanisms.

Encrypted Data Path Support

Support for encrypted communication protocols ensures that sensitive data remains protected during transmission across shared infrastructure.

Compatibility Across Server Platforms and Operating Systems

Enterprise Server Hardware Integration

This category is compatible with a wide range of enterprise server platforms, including rack-mounted systems, blade servers, and modular compute nodes. The PCIe standard ensures broad motherboard compatibility.

Operating System Driver Support

Driver support spans major operating systems including Linux distributions, Windows Server environments, and virtualization hypervisors. Optimized drivers ensure stable performance and efficient resource utilization.

Firmware Management and Updates

Firmware-level management tools enable administrators to maintain adapter performance, apply security patches, and optimize configuration settings across large deployments.

Performance Tuning and Optimization Strategies

Throughput Maximization Techniques

Optimization strategies include enabling jumbo frames, adjusting interrupt coalescing parameters, and configuring multi-queue receive and transmit settings to improve parallel processing efficiency.

CPU Affinity and Queue Distribution

Assigning network queues to specific CPU cores reduces context switching and improves overall packet processing efficiency in multi-core server environments.

Thermal Management and Energy Efficiency

Power Consumption Optimization

The adapter is engineered for energy-efficient operation, balancing high throughput with reduced power consumption. Intelligent power management features dynamically adjust performance states based on workload demand.

Heat Dissipation Engineering

Optimized PCB layout and component placement ensure efficient heat dissipation within server airflow systems, reducing thermal buildup during peak operation.

Eco-Efficient Data Center Design

The energy efficiency of 25GbE adapters contributes to lower overall data center power usage compared to higher-latency, higher-power legacy networking systems.