M321R4GA3PB2-CCPEC Samsung PC5-51200 DDR5-6400MHz 32GB 2Rx8 ECC Memory Module

• Brand: Samsung
• Part Number: M321R4GA3PB2-CCPEC
• Memory Classification: Enterprise-grade DDR5 RDIMM

Technical Specifications

• Capacity: 32GB per module
• Speed: DDR5-6400MHz / PC5-51200
• Form Factor: RDIMM 288-Pin
• ECC Support: Yes (Error Correcting Code)
• Voltage: Low Power 1.1V
• Manufacturer: Samsung
• Application: Enterprise Servers, Data Centers,

Speed and Bandwidth

• Operates at 6400 megabits per second (Mbps)
• PC5-51200 equivalent bandwidth rating
• Cutting-edge DDR5 SDRAM architecture

Advanced Memory Features

• Error Correction Code (ECC) support
• Registered buffer for signal integrity
• Optimized CL52 latency timing

Technical Configuration

Module Organization

• Single module configuration (1x32GB)
• Dual-rank X8 design
• 1.1V low-power operation

Physical Dimensions

• 288-pin RDIMM form factor
• Compact profile: 1" height
• Standard 6.75" module length

System Compatibility

• Designed for next-generation servers
• Ideal for data-intensive applications
• Enterprise workstation compatible

Shipping Information

• Lightweight design: 0.2 pounds per module
• Retail-ready packaging

Quality Assurance

• Manufacturer-certified reliability
• Industrial-grade components
• Rigorously tested for stability

Samsung DDR5 Registered ECC RDIMM Server Memory 

The M321R4GA3PB2-CCPEC Samsung PC5-51200 DDR5-6400MHz 32GB ECC DDR5 SDRAM 288-pin RDIMM Memory Module represents the cutting edge in server-grade memory technology. Specifically designed for data center workloads, enterprise servers, and high-performance computing (HPC) systems, this memory module leverages the superior bandwidth, reliability, and energy efficiency of DDR5 architecture.

Benefits of DDR5 ECC RDIMM Server Memory

DDR5 RDIMM ECC modules offer a significant performance uplift compared to their DDR4 predecessors. Built with enhanced channel architecture, higher density, and smarter power management, DDR5 RDIMM memory is designed to meet the growing demands of modern servers and workstations.

ECC Matters in Enterprise Deployments

Enterprise and cloud infrastructures depend on memory stability to maintain service continuity. ECC RAM modules like the M321R4GA3PB2-CCPEC ensure system stability across long runtimes and under heavy loads, making them a preferred choice for server farms and cloud-native applications.

Built for Scalability

The M321R4GA3PB2-CCPEC is optimized for systems that require scalable memory configurations. It supports higher density and improved power efficiency through DDR5's on-die ECC and dual 32-bit subchannel design, reducing latency and increasing data integrity.

Advantages of RDIMM Architecture:

The register reduces the electrical load seen by the memory controller. Instead of the controller driving dozens of DRAM chips directly, it drives a single register per module. This drastically improves signal integrity.

Capacity: 32GB

This M321R4GA3PB2-CCPEC electrical efficiency allows servers to support more memory modules per channel (commonly 2DPC - 2 DIMMs Per Channel) and much higher total memory capacities—essential for virtualization, large databases, and in-memory computing. For systems with large memory footprints, RDIMMs are the only viable path to ensure reliable operation. Unbuffered modules (UDIMMs) would cause signal degradation, leading to instability and boot failures in multi-DIMM configurations.

Primary Deployment Modern Server Platforms

This module is designed for next-generation servers based on Intel Xeon Scalable Processors (Sapphire Rapids, Emerald Rapids, and beyond) and AMD EPYC 9004 "Genoa" and 8004 "Siena" series processors. These platforms natively support DDR5 memory with RDIMM and ECC functionality.

Reliability 

Samsung M321R4GA3PB2-CCPEC modules undergo rigorous testing and validation. Using in-house DRAM ensures component-level quality control, leading to exceptional compatibility, longevity, and low failure rates—key for minimizing downtime in critical infrastructure. With built-in Error-Correcting Code (ECC), this module ensures data accuracy by detecting and correcting common internal memory errors. This reduces system crashes and data corruption—making the module ideal for cloud servers, analytics engines, engineering workloads, and virtualized systems that require dependable memory performance. The registered design stabilizes command and signal pathways, helping maintain consistent operations even under heavy workloads.

Thermal Management

High-speed DDR5 modules may produce more heat, especially under sustained loads. Ensure adequate airflow and cooling, particularly in rackmount server environments.

Compatibility

Samsung M321R4GA3PB2-CCPEC RDIMMs are validated for compatibility with major server platforms including those from Dell EMC, HPE, Lenovo, Cisco, Super micro, and more. Each module undergoes stringent quality assurance to ensure optimal operation in 24/7 environments.