Samsung 16GB DDR5 6400MHz ECC Registered Server Memory — M321R2GA3PB2-CCP

The Samsung M321R2GA3PB2-CCP is a 16GB DDR5 ECC Registered (RDIMM) server memory module operating at 6400MHz (PC5-51200) with 1.1V operating voltage. Built on Samsung's DDR5 x8 die architecture, this Single Rank module delivers peak DDR5 memory bandwidth for enterprise server workloads including virtualization, databases, and general-purpose computing. DDR5 introduces on-die ECC (ODECC) for enhanced per-chip error detection, complemented by system-level ECC for comprehensive data integrity protection. The registered (buffered) design enables stable multi-DIMM configurations across next-generation enterprise server platforms.

Key Features

• 6400MHz Peak DDR5 Speed: PC5-51200 delivers the highest DDR5 bandwidth tier for maximum memory throughput
• Dual-Layer ECC: On-die ECC (ODECC) plus system-level ECC provides comprehensive error detection and correction
• Registered (Buffered) Design: Enables stable multi-DIMM server configurations without signal degradation
• Samsung DRAM: Industry-leading manufacturing quality with proven enterprise-grade reliability and longevity
• RoHS Compliant: Meets global environmental and safety standards for enterprise deployments

Technical Specifications

• Part Number: M321R2GA3PB2-CCP
• Manufacturer: Samsung
• Memory Type: DDR5 SDRAM
• Module Type: RDIMM (Registered / Buffered)
• Capacity: 16GB
• Speed: 6400MHz (PC5-51200)
• Voltage: 1.1V
• Form Factor: 288-Pin DIMM
• Rank: Single Rank (1Rx8)
• Die Organization: x8
• Data Width: 72-bit (64-bit + 8-bit ECC)
• Error Correction: On-Die ECC + SECDED system-level ECC
• Operating Temperature: 0°C to 85°C

Use Cases

• Virtualization: VMware vSphere, Microsoft Hyper-V, and KVM deployments on DDR5 server platforms at peak bandwidth
• Database Servers: MySQL, PostgreSQL, Microsoft SQL Server, and Oracle database workloads on DDR5 platforms
• General-Purpose Computing: Enterprise application servers and web servers on DDR5 platforms requiring peak bandwidth
• High-DIMM-Count Configurations: Single Rank modules allow more DIMMs per channel on platforms with rank limits

Compatibility

• Compatible with DDR5 RDIMM slots supporting 6400MHz — verify your platform's maximum supported DDR5 speed before ordering
• CCP is the qualification code for this Samsung 16GB DDR5 6400MHz Single Rank x8 RDIMM PB2 series — verify against your server's memory QVL before ordering
• Do not mix with DDR5 UDIMMs or LRDIMMs in the same system
• For multi-DIMM stability, populate channels with matched capacity, speed, and rank modules

Frequently Asked Questions

Is this module compatible with DDR4 servers?

No — DDR5 and DDR4 are not interchangeable. DDR5 RDIMMs require DDR5-compatible server platforms. Always verify your server's memory type requirement before ordering.

What does the CCP qualification code indicate?

CCP is Samsung's qualification code for this 16GB DDR5 6400MHz Single Rank x8 RDIMM PB2 series — always verify against your server vendor's QVL before purchase.

What is the advantage of Single Rank x8 at 16GB DDR5 6400MHz?

Single Rank modules have lower electrical load per channel, potentially allowing more DIMMs per channel on some platforms. At 6400MHz, this module delivers peak DDR5 bandwidth at an accessible 16GB capacity point — ideal for platforms requiring high-speed DDR5 with flexible DIMM count configurations.

Whether you are deploying new DDR5 server infrastructure at peak bandwidth, expanding virtualization capacity, or building high-DIMM-count configurations, the Samsung M321R2GA3PB2-CCP delivers the 16GB DDR5 6400MHz performance, dual-layer ECC protection, and Samsung manufacturing quality your enterprise server environment demands.