Y1T43 Dell CX653105A ConnectX-6 VPI HDR100 QSFP Adapter

Dell Y1T43 Mellanox ConnectX-6 Network Adapter

The Dell Y1T43, powered by Mellanox ConnectX-6 VPI architecture, is a high-performance single-port QSFP56 network adapter designed for next-generation data center workloads. Engineered for ultra-low latency and extreme bandwidth scalability, it supports both Ethernet and InfiniBand fabrics, making it ideal for HPC clusters, cloud infrastructures, and high-throughput enterprise environments.

Product Information

• Brand: Dell
• Part Number: Y1T43
• Drive Type: QSFP Adapter

Architecture Overview

• Form factor: PCIe plug-in adapter card
• Interface: Single-port QSFP56 high-speed connector
• Designed for enterprise, HPC, and hyperscale data centers
• Supports both Ethernet and InfiniBand protocols

Ethernet Speed Capabilities

• 10 Gb/s Ethernet connectivity
• 25 Gb/s enhanced data throughput
• 40 Gb/s high-performance networking
• 50 Gb/s accelerated transport layer
• 100 Gb/s ultra-high-speed transmission

InfiniBand Protocol

• SDR (Single Data Rate)
• DDR (Double Data Rate)
• QDR (Quad Data Rate)
• FDR (Fourteen Data Rate)
• EDR (Enhanced Data Rate)
• HDR100 ultra-low latency mode

PCIe Specifications

• PCIe x16 edge connector interface
• PCIe Gen 3.0 and Gen 4.0 support
• SerDes speeds: 8.0 GT/s and 16.0 GT/s
• SNAPI single-slot configuration (2x8 lane arrangement)

System Integration Advantages

• Optimized for high-density server environments
• Efficient bandwidth allocation for parallel workloads
• Reduced latency through direct memory access paths

Hardware Design Features

• Single-port QSFP56 network interface
• High-density plug-in card architecture
• Compact design for server integration

Bracket Configuration

• Tall bracket included for rack server compatibility
• Secure installation in standard chassis environments
• Designed for enterprise-grade hardware setups

High-Performance Computing and Data Center Networking

• AI and machine learning clusters
• High-performance computing (HPC) systems
• Cloud data center networking
• Hyperscale distributed computing environments
• Enterprise backbone and storage networks

Ultra-Fast Converged Networking Solution

• Unified Ethernet and InfiniBand support
• Up to 100 Gb/s Ethernet throughput capability
• HDR100 low-latency InfiniBand performance
• PCIe Gen4-ready high-bandwidth architecture
• Optimized for modern AI and cloud workloads

Dell Y1T43 Single Port Mellanox QSFP Adapter 

The Dell Y1T43 Single Port Mellanox CX653105A ConnectX-6 VPI HDR100 QSFP Adapter is a high-performance server network interface solution designed for modern high-speed data center, cloud computing, and high-performance computing (HPC) environments. Built on the NVIDIA Mellanox ConnectX-6 architecture, this adapter delivers Virtual Protocol Interconnect (VPI) capability supporting both Ethernet and InfiniBand protocols, enabling flexible deployment across converged networking infrastructures. With HDR100 support and QSFP form factor integration, it is engineered to deliver ultra-low latency, high bandwidth, and scalable throughput for mission-critical workloads.

ConnectX-6 High-Performance Network Controller Design

The adapter is powered by the Mellanox ConnectX-6 network controller, which is optimized for extreme throughput and low-latency communication. This architecture supports high packet processing rates and advanced offloading capabilities, enabling efficient handling of compute-intensive networking workloads. It is designed for environments where data movement efficiency directly impacts application performance, such as AI training clusters and large-scale distributed computing systems.

Single Port QSFP HDR100 Interface

The Y1T43 adapter features a single QSFP port supporting HDR100 (High Data Rate 100 Gigabit InfiniBand) connectivity. This interface allows for ultra-high-speed data transfer over compatible fiber or copper DAC connections. The QSFP form factor ensures compact integration into server systems while maintaining high bandwidth density and scalability in rack-mounted infrastructure.

Virtual Protocol Interconnect (VPI) Technology

A defining feature of this adapter is its VPI capability, enabling dual-protocol support for both Ethernet and InfiniBand networking. This flexibility allows organizations to deploy a unified hardware platform that can adapt to different network architectures without requiring hardware changes, significantly improving infrastructure efficiency and investment protection.

HDR100 InfiniBand Performance Architecture

The HDR100 specification delivers up to 100 gigabits per second of data throughput, enabling extremely fast communication between compute nodes in high-performance environments. This level of bandwidth is essential for workloads such as machine learning model training, scientific simulations, and large-scale data analytics processing.

Ultra-Low Latency Packet Processing

The ConnectX-6 architecture is engineered for ultra-low latency communication, minimizing delays in packet transmission between systems. This is critical for distributed computing applications where synchronization between nodes must occur in near real time to maintain computational efficiency.

Advanced Offload Engine Capabilities

The adapter includes advanced hardware offload engines that handle networking tasks such as checksum calculation, segmentation, and encryption. By offloading these processes from the CPU, system resources are freed for application workloads, resulting in improved overall system efficiency.

High-Performance Computing Clusters

In HPC environments, the adapter is used to connect compute nodes within tightly coupled clusters. Its HDR100 capability ensures rapid data exchange between nodes, supporting parallel processing tasks and distributed computation frameworks.

Artificial Intelligence and Machine Learning Infrastructure

The Y1T43 adapter is widely deployed in AI and machine learning environments where large datasets must be transferred quickly between GPUs, storage systems, and compute nodes. Its low-latency architecture accelerates training and inference workloads.

Cloud Data Center Networking

Cloud service providers utilize this adapter to build scalable and high-performance data center networks. Its support for VPI allows flexible deployment across both Ethernet-based and InfiniBand-based cloud architectures.

Dual Protocol Support for Ethernet and InfiniBand

The VPI technology enables seamless switching between Ethernet and InfiniBand protocols depending on network requirements. This allows organizations to unify infrastructure and reduce hardware complexity while maintaining protocol flexibility.

Scalable Fabric Integration

The adapter integrates into large-scale network fabrics, supporting both leaf-spine and fat-tree topologies commonly used in modern data centers. This ensures scalable performance as infrastructure grows.

Energy-Efficient High-Speed Networking

Despite its high-performance capabilities, the adapter is designed with energy efficiency in mind. It minimizes power consumption while delivering maximum throughput, making it suitable for large-scale deployments where energy efficiency is critical.

Thermal Optimization for Data Center Environments

The module is engineered to maintain stable thermal performance under continuous high-load operation. Efficient heat dissipation ensures long-term reliability in dense server environments.

Compact PCIe Integration Design

The adapter utilizes a PCI Express interface for host system connectivity, ensuring high-speed communication between the server CPU and network interface. Its compact design allows integration into standard server architectures without requiring additional expansion space.

Hardware-Based Packet Processing Acceleration

The ConnectX-6 controller accelerates packet processing through dedicated hardware engines, reducing CPU overhead and improving system throughput in high-traffic environments.

RDMA over Converged Ethernet Support

The adapter supports Remote Direct Memory Access (RDMA), allowing direct memory-to-memory communication between systems without CPU intervention. This significantly reduces latency and improves data transfer efficiency.

High-Speed Encryption and Security Offload

Security operations such as encryption and decryption can be offloaded to hardware, ensuring secure data transmission without impacting system performance.

Scalability and Infrastructure Expansion

High-Density Compute Node Connectivity

The adapter supports high-density deployment in server environments, enabling multiple compute nodes to be connected efficiently within large-scale clusters.

Flexible Fabric Scaling for HPC Environments

Its architecture supports scalable fabric expansion, allowing additional nodes to be integrated into existing networks without performance degradation.

Future-Proof High-Speed Networking Design

The HDR100 capability positions the adapter as a future-ready solution for evolving high-performance networking requirements in data-intensive industries.

Driver and Firmware Optimization

The adapter is supported by advanced drivers and firmware designed to optimize performance across different operating systems and workloads.

Network Performance Monitoring Tools

Administrators can monitor throughput, latency, and error metrics using system-level monitoring tools integrated with server management platforms.

Role in Modern High-Performance Networking Ecosystems

The Y1T43 adapter forms a foundational component in AI and HPC networking infrastructures, enabling high-speed interconnectivity between compute nodes.

Enablement of Scalable Cloud-Native Infrastructure

The adapter plays a critical role in enabling scalable cloud-native infrastructures that require high-speed, low-latency networking.

Advanced High-Performance Network Acceleration Layer

At a deeper architectural level, the adapter incorporates an advanced network acceleration layer that optimizes packet routing, reduces latency, and enhances throughput across complex distributed systems.

Unified VPI Networking Optimization Framework

The VPI framework enables unified networking optimization across Ethernet and InfiniBand protocols, ensuring seamless interoperability and efficient resource utilization in hybrid computing environments.