Samsung 64GB 6400MHz DDR5 PC5-51200 ECC Registered 288-Pin DIMM 1.1V Dual Rank x4 Memory Module — M321R8GA0EB2-CCPEF

The Samsung M321R8GA0EB2-CCPEF is a 64GB DDR5-6400MHz ECC Registered (RDIMM) server memory module operating at 1.1V. Featuring a 288-pin interface and Dual Rank x4 configuration, it delivers next-generation DDR5 bandwidth and enterprise-grade ECC error correction for the latest Intel Xeon and AMD EPYC server platforms requiring high-speed DDR5 registered memory. The CCPEF suffix denotes a specific Samsung production revision.

Key Features

• 64GB DDR5 ECC Registered DIMM for next-generation enterprise servers
• DDR5-6400MHz (PC5-51200) — highest DDR5 bandwidth for demanding workloads
• Registered DIMM (RDIMM) for stability in multi-DIMM DDR5 server configurations
• Dual Rank x4 configuration for high-density DDR5 memory deployment
• 1.1V low-voltage DDR5 operation for improved energy efficiency
• 288-pin interface — standard DDR5 RDIMM form factor

Product Specifications

• Part Number: M321R8GA0EB2-CCPEF
• Manufacturer: Samsung
• Model: 64GB DDR5-6400 ECC Registered DIMM (CCPEF revision)
• OEM Status: Genuine Samsung OEM
• Capacity: 64GB
• Type: DDR5 ECC Registered DIMM (RDIMM)
• Speed: 6400MHz (PC5-51200)
• Voltage: 1.1V
• Rank / Organization: Dual Rank x4
• Pins: 288-Pin
• ECC: Yes

Memory Specifications

• Capacity: 64GB
• DIMM Type: Registered ECC (RDIMM)
• DDR Generation: DDR5
• Pin Count: 288-Pin
• Rank: Dual Rank (2Rx4)
• Voltage: 1.1V
• ECC: Yes (Error-Correcting Code)
• On-Die ECC: Yes (DDR5 native)
• Production Revision: CCPEF

Performance Specifications

• Speed: DDR5-6400MHz
• Bandwidth: PC5-51200
• XMP / JEDEC: JEDEC DDR5 standard
• Bandwidth vs DDR4-3200: Up to 2x improvement

Use Cases

• Next-generation enterprise server memory for DDR5-capable platforms
• High-bandwidth AI/ML and HPC workloads requiring DDR5-6400 speeds
• Large-scale virtualization hosts on DDR5 server platforms
• In-memory database workloads requiring maximum DDR5 bandwidth

Compatibility

• Compatible with servers supporting DDR5 ECC Registered (RDIMM) memory
• Compatible with Intel Xeon Scalable (Sapphire Rapids and later) and AMD EPYC (Genoa and later) platforms
• Not compatible with DDR4 systems — DDR5 is not backward compatible
• Verify server QVL (Qualified Vendor List) before ordering

Frequently Asked Questions

Is DDR5 backward compatible with DDR4 servers?

No. DDR5 uses a different physical connector and is not backward compatible with DDR4 server platforms. Ensure your server supports DDR5 before ordering.

What is the difference between M321R8GA0EB2-CCP and M321R8GA0EB2-CCPEF?

Both are 64GB DDR5-6400 ECC RDIMM modules from the same Samsung family. The CCPEF suffix denotes a specific production revision — they are functionally equivalent with the same specifications.

Is this module compatible with Intel Xeon Sapphire Rapids?

Yes, the M321R8GA0EB2-CCPEF is compatible with Intel Xeon Scalable Sapphire Rapids server platforms supporting DDR5-6400 ECC RDIMM. Verify your specific server's QVL before ordering.

The Samsung M321R8GA0EB2-CCPEF 64GB DDR5-6400 ECC Registered DIMM delivers next-generation DDR5 bandwidth and enterprise-grade reliability for the most demanding server workloads. Order today for genuine Samsung DDR5 RDIMM quality at 64GB capacity.