Samsung M321R4GA3PB0-CWM 32GB DDR5-5600 ECC RDIMM Server Memory
The Samsung M321R4GA3PB0-CWM is a 32GB DDR5-5600 ECC Registered DIMM (RDIMM) designed for enterprise servers and professional workstation platforms.
Featuring DDR5-5600 performance, ECC error correction, Registered DIMM architecture, dual-rank 2Rx8 organization, and a 288-pin DIMM design, this Samsung memory module provides high-capacity, reliable memory for demanding server and workstation workloads
Description
The Samsung M321R4GA3PB0-CWM is a high-performance 32GB DDR5 server memory module engineered for systems that support registered ECC DDR5 memory.
Operating at 5600 MT/s, the module provides increased memory bandwidth compared with previous-generation DDR4 server memory. Its ECC capability helps detect and correct certain memory errors, making it appropriate for server environments where data integrity and system reliability are important.
The module uses Registered DIMM (RDIMM) technology, which buffers/registers command and control signals to support high-density server memory configurations. It is therefore intended for compatible server and workstation platforms rather than conventional desktop systems.
The exact M321R4GA3PB0-CWM part number appears on qualified component lists from server manufacturers including ASUS and MSI for DDR5-5600 ECC RDIMM configurations.
Key Specifications
| Specification | Details |
|---|---|
| Manufacturer | Samsung |
| Part Number | M321R4GA3PB0-CWM |
| Memory Type | DDR5 SDRAM |
| Capacity | 32GB |
| Module Type | ECC Registered DIMM (RDIMM) |
| Memory Speed | DDR5-5600 |
| Data Rate | 5600 MT/s |
| PC Standard | PC5-44800R |
| Rank | Dual Rank |
| Organization | 2Rx8 |
| ECC | Yes |
| Registered | Yes |
| Form Factor | DIMM |
| Pins | 288-pin |
| Voltage | 1.1V |
| DRAM Organization | 2G × 8 |
| DRAM Packages | 20 FBGA |
| Memory Application | Server / Workstation |
| Standard | JEDEC DDR5 |
| PoE | Not Applicable |
The exact module specifications are corroborated by memory-specialist technical listings and server manufacturer qualification documents.
32GB DDR5-5600 Capacity
With 32GB of memory capacity, the M321R4GA3PB0-CWM is suitable for expanding server memory while maintaining the ECC and registered-memory characteristics required by many enterprise platforms.
Multiple modules can be installed in supported systems to increase total memory capacity, subject to the server’s maximum memory capacity, DIMM population rules, CPU memory-channel configuration, and supported memory speeds.
DDR5-5600 Performance
The module operates at 5600 MT/s, providing high memory bandwidth for modern server processors.
DDR5-5600 is well suited for workloads involving:
- Virtualization
- Database applications
- Cloud infrastructure
- Enterprise applications
- Data analytics
- High-performance computing
- Software development
- Professional workstation applications
Actual operating speed depends on the memory controller, processor, BIOS/firmware, DIMM population, and server platform. A system may reduce the memory speed when required by its platform specifications.
ECC Error Correction
The M321R4GA3PB0-CWM uses ECC memory, providing error-detection and correction capabilities that are important for enterprise computing.
ECC can help improve system reliability by detecting and correcting certain single-bit memory errors, reducing the risk of memory-related data corruption and system instability.
This makes ECC RDIMM memory particularly appropriate for:
- Mission-critical servers
- Virtualization hosts
- Database servers
- Enterprise applications
- Storage systems
- Data-center infrastructure
Registered DIMM Architecture
Unlike standard desktop UDIMMs, the M321R4GA3PB0-CWM is a Registered DIMM (RDIMM).
RDIMM technology uses a register to buffer memory command and control signals. This architecture allows compatible server platforms to support larger and more structured memory configurations.
RDIMM and UDIMM modules are not interchangeable.
The target server must specifically support DDR5 ECC RDIMM memory.
Dual-Rank 2Rx8 Organization
The module uses a 2Rx8 dual-rank organization.
| Memory Characteristic | Specification |
|---|---|
| Rank Configuration | 2R |
| Data Organization | x8 |
| Module Organization | 2Rx8 |
| Capacity | 32GB |
The memory organization should be considered when configuring multiple DIMMs because server platforms may have specific requirements for rank population, DIMM placement, and memory-channel balance.
288-Pin DIMM Form Factor
The Samsung M321R4GA3PB0-CWM uses a standard 288-pin DDR5 DIMM form factor.
However, the fact that a module has 288 pins does not mean it is compatible with every 288-pin DDR5 system. Server platforms require the correct memory technology, including ECC, RDIMM support, capacity, rank configuration, and supported speed.
Server & Workstation Applications
The M321R4GA3PB0-CWM is intended for compatible professional computing platforms.
Recommended applications include:
- Enterprise servers
- Data-center servers
- Virtualization servers
- Database servers
- Cloud computing infrastructure
- Storage servers
- High-performance workstations
- Engineering workstations
- Scientific computing
- Professional applications
ASUS and MSI server qualification documents list this exact Samsung part number as a supported 32GB DDR5-5600 ECC RDIMM.
Compatibility Considerations
Before purchasing or installing the M321R4GA3PB0-CWM, verify that the target system supports:
- DDR5 memory
- ECC memory
- Registered DIMM / RDIMM
- 32GB DIMM capacity
- DDR5-5600 memory
- 2Rx8 memory organization
- 288-pin DIMMs
Also verify the server manufacturer’s recommended DIMM population sequence.
Do not install this RDIMM in a platform designed only for DDR5 UDIMM or DDR5 SODIMM memory.
Memory Population & Configuration
For multi-DIMM server configurations, optimal performance generally requires following the server manufacturer’s recommended memory-channel population order.
When installing multiple modules, matching:
- Capacity
- Speed
- Rank
- Memory type
- ECC configuration
- Manufacturer/part number
can help maintain predictable system behavior.
For the best compatibility, use the exact qualified memory part number specified by the server manufacturer whenever possible.
Key Features & Benefits
- 32GB memory capacity
- Samsung enterprise-grade memory
- DDR5 technology
- 5600 MT/s data rate
- ECC error correction
- Registered DIMM architecture
- Dual-rank 2Rx8 organization
- 288-pin DIMM
- 1.1V operating voltage
- PC5-44800R
- Designed for server and workstation platforms
- Suitable for virtualization and enterprise workloads
- Suitable for high-density server memory configurations
- Exact part number qualified by multiple server manufacturers
Important Compatibility Note
The M321R4GA3PB0-CWM is server RDIMM memory and should not be treated as a generic desktop DDR5 module.
RDIMM, UDIMM and SODIMM memory are different technologies and are generally not interchangeable.
Always verify the target server’s CPU generation, motherboard/server model, BIOS support, DIMM type, maximum supported capacity, memory population rules, and supported operating frequency before ordering.
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