Samsung M393A2G40DB3-CWE 16GB DDR4-2400 ECC RDIMM Server Memory

Description

The Samsung M393A2G40DB3-CWE is a 16GB DDR4 server memory module engineered for systems supporting ECC Registered DDR4 RDIMM technology.

Operating at DDR4-2400, the module provides a rated memory-transfer rate of 2400 MT/s and is associated with the PC4-19200 memory standard. Its ECC capability helps improve data integrity by detecting and correcting certain memory errors, while the registered architecture buffers memory control signals for stable operation in compatible server configurations.

The module uses a 288-pin DDR4 DIMM form factor and operates at 1.2V. It is intended specifically for server environments rather than standard desktop or laptop systems.

The exact M393A2G40DB3-CWE part number is identified as a 16GB Samsung DDR4 RDIMM and is referenced for use with compatible enterprise server platforms.

Key Specifications

Note: Server manufacturers may configure supported memory speeds, ranks, and DIMM population rules differently. Always verify the exact server platform before installation.

16GB Memory Capacity

The 16GB capacity provides a practical memory expansion option for compatible DDR4 enterprise servers.

Installing additional 16GB RDIMMs can increase available system memory for workloads such as:

• Server virtualization
• Database applications
• Enterprise applications
• File and storage services
• Network infrastructure
• Web and application servers
• Cloud infrastructure
• Business applications
• General-purpose server workloads

The maximum supported memory depends on the server model, processor, motherboard, BIOS/firmware, and available DIMM slots.

DDR4-2400 Performance

The M393A2G40DB3-CWE operates at DDR4-2400, providing a rated transfer rate of 2400 MT/s.

The PC4-19200 designation corresponds to a theoretical peak bandwidth of approximately 19.2 GB/s per 64-bit memory channel under ideal conditions.

Actual operating performance can vary depending on:

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

A server may automatically operate the memory below its rated speed when required by the processor or platform configuration.

ECC Error-Correcting Memory

The M393A2G40DB3-CWE is designed as ECC server memory.

ECC technology helps detect and correct certain types of memory errors, improving data integrity and system reliability. This is particularly important in environments where servers are expected to operate continuously.

Typical applications include:

• Enterprise servers
• Virtualization hosts
• Database servers
• Storage systems
• Data-center infrastructure
• Cloud platforms
• Mission-critical applications

Registered DIMM Architecture

The module uses Registered DIMM (RDIMM) technology.

RDIMM memory incorporates register/buffering circuitry for memory control and command signals. This architecture is commonly used in enterprise server platforms to support stable operation across larger memory configurations.

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

The target system must specifically support DDR4 ECC Registered DIMMs.

288-Pin DDR4 DIMM

The Samsung M393A2G40DB3-CWE uses a 288-pin DDR4 DIMM form factor.

Compatibility is determined by more than the physical pin count. The server must also support:

• DDR4 memory
• ECC memory
• Registered DIMMs
• 16GB DIMMs
• DDR4-2400 operation
• The module’s supported organization
• The appropriate memory-channel configuration

Server & Data-Center Applications

The M393A2G40DB3-CWE is intended for compatible enterprise and server-class systems.

Recommended applications include:

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

Memory Population & Configuration

For multi-DIMM configurations, memory should be installed according to the server manufacturer’s recommended DIMM population sequence.

For best compatibility and predictable performance, matching modules by the following characteristics is recommended:

• Capacity
• DDR generation
• Speed
• ECC capability
• Registered architecture
• Rank/organization
• Manufacturer
• Part number

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

Compatibility Considerations

Before purchasing or installing the Samsung M393A2G40DB3-CWE, verify that the target server supports:

• DDR4 ECC RDIMM
• 16GB DDR4 DIMMs
• DDR4-2400
• 288-pin DDR4 DIMMs
• 1.2V DDR4 memory
• The required rank/organization
• The server’s specified DIMM population rules

The module is intended for server platforms, not conventional desktop or laptop systems.

DDR4 Generation Compatibility

The M393A2G40DB3-CWE is a DDR4 memory module.

It is not compatible with DDR5-only systems. DDR4 and DDR5 use different electrical characteristics and memory-module architectures.

Always verify that the target server specifically supports DDR4 ECC Registered memory.

Important Memory Mixing Note

For reliable server operation, avoid mixing the M393A2G40DB3-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

• 16GB memory capacity
• Samsung enterprise server memory
• DDR4 technology
• DDR4-2400 performance
• 2400 MT/s data rate
• PC4-19200
• ECC error correction
• Registered DIMM architecture
• 288-pin DDR4 DIMM
• 1.2V operating voltage
• Designed for enterprise server platforms
• Suitable for virtualization workloads
• Suitable for database applications
• Suitable for storage and data-center environments
• Suitable for enterprise application servers

Important Compatibility Note

The Samsung M393A2G40DB3-CWE is a 16GB 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.

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.