Samsung 64GB 6400MHz DDR5 PC5-51200 ECC Registered CL 288-Pin DIMM 1.1V Dual Rank x4 Memory Module – M321R8GA0PB2-CCP

Samsung 64GB DDR5 6400MHz ECC Registered Server Memory — M321R8GA0PB2-CCP

The Samsung M321R8GA0PB2-CCP is a 64GB DDR5 ECC Registered (RDIMM) server memory module operating at 6400MHz (PC5-51200) with 1.1V operating voltage. Built on Samsung”s advanced DDR5 x4 die architecture, this high-density 64GB module delivers the highest DDR5 memory bandwidth available — making it ideal for the most demanding enterprise workloads including large-scale virtualization, in-memory databases, AI/ML inference, and high-performance computing. Error-Correcting Code (ECC) technology continuously detects and corrects single-bit memory errors in real time, ensuring data integrity in mission-critical environments. The registered (buffered) design reduces electrical load on the memory controller, enabling stable high-density multi-DIMM configurations across next-generation enterprise server platforms.

Key Features

• 6400MHz DDR5 — Peak Performance: Highest DDR5 speed tier delivering maximum memory bandwidth for the most demanding enterprise workloads
• On-Die + System-Level ECC: Dual-layer error correction ensures maximum data integrity for mission-critical workloads
• Registered (Buffered) Design: Enables stable, high-density multi-DIMM server configurations without signal degradation
• Samsung x4 DRAM: High-density x4 die organization delivers 64GB per module with Chip Kill ECC support on compatible platforms
• RoHS Compliant: Meets global environmental and safety standards for enterprise deployments

Technical Specifications

• Part Number: M321R8GA0PB2-CCP
• Manufacturer: Samsung
• Memory Type: DDR5 SDRAM
• Module Type: RDIMM (Registered / Buffered)
• Capacity: 64GB
• Speed: 6400MHz (PC5-51200)
• Voltage: 1.1V
• Form Factor: 288-Pin DIMM
• Rank: Dual Rank (2Rx4)
• Die Organization: x4
• Data Width: 72-bit (64-bit + 8-bit ECC)
• Error Correction: SECDED (Single-bit correction, Double-bit detection)
• Operating Temperature: 0°C to 85°C

Use Cases

• Large-Scale Virtualization: VMware vSphere, Microsoft Hyper-V, and KVM deployments requiring maximum memory capacity and bandwidth per server
• In-Memory Databases: SAP HANA, Oracle TimesTen, and Redis clusters demanding the highest memory throughput with large capacity per slot
• AI/ML Inference: GPU-adjacent CPU memory for large language model inference and ML pipeline acceleration at peak bandwidth
• HPC Clusters: MPI-based scientific computing requiring peak per-node memory capacity and inter-node throughput

Compatibility

• Compatible with DDR5 RDIMM slots supporting 6400MHz — verify your platform”s maximum supported DDR5 speed before ordering
• CCP is the base qualification code for this Samsung 64GB DDR5 6400MHz x4 RDIMM PB2 series — verify against your server”s memory QVL before ordering
• Do not mix with DDR5 UDIMMs, LRDIMMs, or lower-speed DDR5 modules in the same channel
• For multi-DIMM stability, populate channels with matched capacity, speed, and rank modules

Frequently Asked Questions

How does PC5-51200 (6400MHz) compare to PC5-44800 (5600MHz) and PC5-38400 (4800MHz)?

PC5-51200 delivers approximately 14% higher peak bandwidth than PC5-44800 and 33% higher than PC5-38400, making it the top DDR5 speed tier for bandwidth-critical enterprise workloads — provided your server platform supports 6400MHz DDR5.

What does the CCP base qualification code indicate?

CCP is Samsung”s base qualification code for this 64GB DDR5 6400MHz x4 RDIMM PB2 series. Variants with extended suffixes (CCPWC, CCPKC, CCPEC) represent specific OEM or regional qualifications — always verify against your server vendor”s QVL before purchase.

What is the advantage of x4 die organization for 64GB modules?

x4 die organization uses narrower 4-bit wide DRAM chips, enabling higher per-module capacity (64GB) and Chip Kill ECC support on compatible platforms — providing stronger error correction than standard SECDED alone for maximum data integrity.

Whether you are maximizing per-server memory capacity for large-scale virtualization, accelerating in-memory database performance at peak DDR5 bandwidth, or building out a high-density AI inference platform, the Samsung M321R8GA0PB2-CCP delivers the 64GB DDR5 6400MHz performance, dual-layer ECC protection, and Samsung manufacturing quality your enterprise server infrastructure demands.