Samsung M393A1K43DB2-CWE 8GB DDR4-3200 ECC RDIMM Server Memory

Description

The Samsung M393A1K43DB2-CWE is an 8GB DDR4 server memory module engineered for systems supporting ECC Registered DDR4 RDIMM technology.

Operating at DDR4-3200, the module provides a rated data-transfer rate of 3200 MT/s and uses the PC4-25600 memory specification. Its ECC capability helps detect and correct certain memory errors, while the registered architecture buffers memory control signals for stable operation in compatible enterprise server configurations.

The module uses a single-rank 1Rx8 organization, 288-pin DDR4 DIMM form factor, and 1.2V operating voltage. The exact Samsung part number is documented as an 8GB DDR4-3200 RDIMM with ECC and Registered signaling.

Key Specifications

The exact M393A1K43DB2-CWE is documented with 8GB capacity, DDR4-3200, ECC Registered operation, 1Rx8 organization, 288 pins, 1.2V, and CL22.

8GB Memory Capacity

With 8GB of capacity in a single DIMM, the M393A1K43DB2-CWE provides a practical memory expansion option for compatible DDR4 server platforms.

It can be used to increase available system memory while maintaining compatibility with server configurations designed for lower-capacity DDR4 RDIMMs.

Suitable workloads include:

• Enterprise applications
• Virtualization
• Database services
• File and storage services
• Network infrastructure
• Web servers
• Application servers
• Cloud infrastructure
• Business applications
• General-purpose server workloads

The maximum supported system memory depends on the server model, processor, motherboard, BIOS/firmware, and DIMM population configuration.

DDR4-3200 Performance

The M393A1K43DB2-CWE operates at DDR4-3200, providing a rated transfer rate of 3200 MT/s.

The PC4-25600 specification corresponds to a theoretical peak bandwidth of approximately 25.6 GB/s per 64-bit memory channel under ideal conditions.

Actual operating speed and bandwidth may depend on:

• Server model
• Processor generation
• Integrated memory controller
• BIOS/firmware
• Number of installed DIMMs
• DIMM population
• Memory-channel configuration

A server may operate the DIMM below its rated DDR4-3200 speed depending on platform requirements.

ECC Error-Correcting Memory

The M393A1K43DB2-CWE uses ECC (Error-Correcting Code) memory.

ECC helps detect and correct certain types of memory errors, supporting improved data integrity and system reliability in compatible server environments.

This makes ECC RDIMM memory suitable for:

• Enterprise servers
• Virtualization hosts
• Database servers
• Storage systems
• Data-center infrastructure
• Cloud computing
• Network infrastructure
• Business-critical applications

Registered DIMM Architecture

The module uses Registered DIMM (RDIMM) technology.

RDIMMs incorporate register/buffering circuitry for memory command and control signals. This architecture is designed for enterprise server platforms that require reliable memory operation.

RDIMM, UDIMM, and SODIMM memory are different technologies and are not interchangeable.

The target system must specifically support DDR4 ECC Registered DIMMs.

Single-Rank 1Rx8 Organization

The M393A1K43DB2-CWE uses a single-rank 1Rx8 configuration.

The 1Rx8 organization is an important consideration when configuring multiple DIMMs because server platforms can impose specific rank and memory-channel population requirements.

288-Pin DDR4 DIMM

The Samsung M393A1K43DB2-CWE uses a 288-pin DDR4 DIMM form factor.

However, physical compatibility alone is not sufficient. The target server must also support:

• DDR4 memory
• ECC memory
• Registered DIMMs
• 8GB DIMM capacity
• DDR4-3200 operation
• 1Rx8 organization
• 1.2V DDR4 memory
• The appropriate DIMM population configuration

Server & Data-Center Applications

The M393A1K43DB2-CWE is intended for compatible enterprise server and professional computing platforms.

Recommended applications include:

• Enterprise server upgrades
• Data-center infrastructure
• Virtualization hosts
• Database servers
• Storage servers
• Application servers
• Network infrastructure
• Cloud computing
• Business applications
• Professional computing

The exact Samsung part number is also included in Intel’s DDR4 RDIMM validation documentation for 3200/2933-class server memory.

Memory Population & Configuration

When installing multiple DIMMs, follow the server manufacturer’s recommended memory population sequence.

For predictable compatibility and performance, it is recommended to match:

• Capacity
• DDR generation
• Speed
• Rank
• Organization
• ECC configuration
• Registered architecture
• Manufacturer
• Part number

Balanced memory-channel configurations can help maximize available memory bandwidth.

Compatibility Considerations

Before purchasing or installing the M393A1K43DB2-CWE, verify that the target server supports:

• DDR4 ECC RDIMM
• 8GB DDR4 DIMMs
• DDR4-3200
• 1Rx8 organization
• 288-pin DDR4 DIMMs
• 1.2V DDR4 memory
• The required DIMM population configuration

The module is intended for server platforms, rather than conventional desktop or laptop systems.

DDR4 Generation Compatibility

The M393A1K43DB2-CWE is a DDR4 module and is not compatible with DDR5-only server platforms.

DDR4 and DDR5 use different electrical characteristics and memory-module architectures.

The target server must specifically support DDR4 ECC Registered RDIMM memory.

Important Memory Mixing Note

For reliable server operation, avoid mixing the M393A1K43DB2-CWE with unsupported memory types such as:

• DDR3 memory
• DDR5 memory
• DDR4 UDIMM
• DDR4 SODIMM
• Unsupported LRDIMM configurations
• Non-ECC memory
• Unsupported rank configurations

When expanding an existing server, using matching Samsung modules or memory listed in the server manufacturer’s qualified configuration is recommended.

Key Features & Benefits

• 8GB memory capacity
• Samsung enterprise server memory
• DDR4 technology
• DDR4-3200 performance
• 3200 MT/s data rate
• PC4-25600
• ECC error correction
• Registered DIMM architecture
• Single-rank 1Rx8 organization
• 288-pin DDR4 DIMM
• 1.2V operating voltage
• CL22 latency
• Designed for enterprise server platforms
• Suitable for virtualization and database workloads
• Suitable for storage and data-center environments
• Suitable for enterprise application servers
• Validated in server RDIMM environments

Important Compatibility Note

The Samsung M393A1K43DB2-CWE is an 8GB DDR4 ECC Registered DIMM (RDIMM) and should be marketed specifically as server memory.

It is not a standard consumer DDR4 desktop UDIMM or laptop SODIMM.

RDIMM, UDIMM, and SODIMM technologies are different and generally cannot be substituted for one another.

Always verify the target system’s:

• Server model
• CPU generation
• Motherboard
• BIOS/firmware
• Maximum supported memory
• RDIMM support
• DIMM capacity
• Memory speed
• Rank and organization
• DIMM population rules

before ordering.