Samsung 32GB DDR5-6400 ECC RDIMM Memory - M321R4GA3EB2-CCP

Give a compatible server room for growing workloads without treating memory selection as a speed-only decision. This Samsung module is intended for systems built around registered DDR5 memory, making it a practical option when expanding an existing configuration or planning a measured capacity upgrade. Its documented capacity, rank organization, and latency provide the details needed to compare it with the platform's memory requirements before committing to an installation.

Key Features

• Enterprise memory architecture: Registered construction buffers command and control signals to support the electrical requirements of server memory platforms.
• Error-correcting capability: ECC support makes this module suitable for compatible systems where memory-data integrity matters alongside capacity.
• Capacity planning flexibility: A per-module upgrade approach lets administrators plan expansion around available slots and the server's required channel layout.
• Clear configuration matching: Published rank and timing information helps buyers compare the module with approved platform configurations instead of relying on capacity alone.

Product Specifications

• Manufacturer: Samsung
• Part Number: M321R4GA3EB2-CCP
• Capacity: 32GB
• Memory Technology: DDR5 SDRAM
• Module Type: Registered DIMM (RDIMM)
• Error Correction: ECC
• Data Rate: 6400MT/s
• Bandwidth Rating: PC5-51200
• CAS Latency: CL52
• Rank Configuration: Dual rank
• DRAM Device Width: x8
• Rank Organization: 2Rx8
• Pin Count: 288
• Form Factor: Full-size DIMM
• Operating Voltage: 1.1V
• Application: Server memory

Use Cases

• Increase host memory available to virtual machines when the existing platform has a supported expansion path.
• Provide additional capacity for database buffers and application services whose working sets have outgrown the current installation.
• Plan consistent memory configurations across supported server deployments using the exact module identity.

Compatibility

Requires a server or workstation supporting 288-pin DDR5 ECC RDIMMs, 32GB modules, and 2Rx8 organization. Processor support, firmware, and slot-population rules determine usable configurations and operating speed.

Frequently Asked Questions

Will this fit a DDR4 memory slot?

No. DDR5 and DDR4 modules are not interchangeable.

Can it replace an unbuffered desktop DIMM?

Not simply because the capacity matches. The system must explicitly support registered memory.

Will it always run at its rated data rate?

No. The installed processor and memory population can limit the operating rate.

What should I check before adding it alongside existing memory?

Review the platform's approved module combinations and channel-population instructions, then compare the installed modules' capacity and organization.

For an effective upgrade, start with the workload's actual memory demand and the system's supported expansion layout. Match this module to that plan before ordering, then follow the platform's installation sequence to keep the configuration balanced. That approach makes the purchase a deliberate capacity investment rather than a trial-and-error attempt to reach a headline speed.