Full Specifications & Decoding the Model Number

• Manufacturer: Samsung

• Capacity: 32GB (32G)

• Type: DDR4 SDRAM

• Speed: 3200 MT/s (Often referred to as “3200MHz”)

• Module Type: RDIMM (Registered ECC DIMM)

• Form Factor: 288-pin DIMM

• Rank: Likely Dual Rank (2Rx4) – Common for this capacity and type.

• Voltage: 1.2V (Standard for DDR4)

• Part Number Breakdown:

  • M: Memory Module

  • 393: Server/Enterprise (RDIMM)

  • A: 1.2V

  • 4G: 4Gb DRAM density chips. 32GB capacity is achieved with these chips.

  • 43: Component organization and width (x4 data I/O).

  • BB: The specific revision/design.

  • C: 3rd Generation (in Samsung’s line).

  • WE: 3200MHz speed grade.

Key Feature: RDIMM (Registered ECC)

This is the most critical point for suitability:

1. Registered (Buffered): Contains a register (buffer) on the module that reduces electrical load on the server’s memory controller. This allows for higher capacities and more modules per channel (essential for servers with large amounts of RAM).

2. ECC (Error-Correcting Code): Detects and corrects common types of internal data corruption, ensuring data integrity and system stability for critical workloads.

Is It Suitable For Your Server?

This module is exclusively suitable for servers and workstations that support DDR4 RDIMM memory. It will NOT work in:

• Standard desktop PCs (they use UDIMMs).

• Laptops (they use SODIMMs).

• Systems that only support Unbuffered or LRDIMM memory.

To ensure 100% compatibility, you must check your server’s documentation:

1. Consult the Manual: Check your server’s technical specifications or user manual (e.g., for Dell PowerEdge, HPE ProLiant, Lenovo ThinkSystem, Cisco UCS, Supermicro, etc.).

2. QVL (Qualified Vendor List): The best practice is to find your server model’s QVL. This is a list of memory modules the manufacturer has tested and certified to work flawlessly with your specific model. Look for this Samsung part number or a similar 32GB 3200MT/s RDIMM on the list.

3. Key Compatibility Checks:

   • Does the server support DDR4?

   • Does it support RDIMMs (not just UDIMMs)?

   • What are the maximum speed and capacity per slot? (E.g., a motherboard that only supports up to 2933MT/s will run this module at 2933MT/s).

   • Mixing Rules: For best results, populate memory in identical sets (same size, speed, rank, and ideally same manufacturer/part number) across channels.

Typical Use Cases

This is professional-grade memory designed for:

• Enterprise Servers

• Data Centers

• High-Performance Computing (HPC)

• Workstations for CAD, 3D Rendering, Scientific Simulation

• Virtualization Hosts (VMware ESXi, Hyper-V)

• Database Servers (SQL, Oracle)

Summary

The Samsung M393A4G43BB4-CWE is a high-performance, reliable 32GB DDR4-3200 server memory module. Its RDIMM with ECC design makes it ideal for mission-critical, multi-channel server environments where stability, capacity, and data integrity are paramount.

Final Step: Always verify compatibility with your specific server motherboard/model before purchasing. Using the QVL is the most reliable method.