M393A4G43BB4-CWE 32GB DDR4-3200 2Rx8 ECC RDIMM

M393A4G43BB4-CWE

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Introduction

The Samsung M393A4G43BB4-CWE is a 32GB DDR4-3200 ECC Registered DIMM for compatible enterprise servers. Its 32GB capacity supports higher memory density per slot, while the 2Rx8 organization is an important detail when planning upgrades or matching an existing server configuration.

Intel DDR4 RDIMM validation results list this model with CL22 timing, an E4 raw-card layout, and Samsung K4AAG045WB-BCWE 16 Gb x8 DRAM devices. These identifiers help distinguish it from 32GB x4-based RDIMMs that can share the same capacity and speed but use a different memory organization.

At 3200 MT/s, the module can deliver a theoretical 25.6 GB/s per 64-bit memory channel when the platform supports DDR4-3200 at the installed DIMMs-per-channel configuration. Processor generation, BIOS, and population rules can reduce the actual operating speed.

For an upgrade, users should verify more than capacity. The server must support ECC RDIMM, 2Rx8 organization, and the intended population pattern. RDIMM, LRDIMM, and UDIMM are not interchangeable, and support for two or three DIMMs per channel depends on the server platform rather than the DIMM alone.

For exact-part sourcing and server memory configuration support, we at Huaying Hengtong assist customers with enterprise server memory requirements.

Before installation, compare existing DIMMs by capacity, rank, device width, speed, and module type, then follow the server vendor’s channel population rules. Mixed capacities or speeds may work on some platforms, but can change operating frequency or memory-channel balance.

Specifications

Product Model	M393A4G43BB4-CWE
Memory Type	DDR4
Module Type	Registered DIMM / RDIMM
Application	Server
Capacity	32GB
Memory Speed	3200 MT/s
Speed Classification	DDR4-3200 / PC4-25600R
Memory Organization	2Rx8
DRAM Component	Samsung K4AAG045WB-BCWE / 16 Gb x8
Error Correction	ECC Supported
CAS Latency	CL22
Operating Voltage	1.2V
Form Factor	288-pin DIMM

Key Product Features

32GB Capacity for Slot-Efficient Expansion

A 32GB module can reach a target memory capacity with fewer DIMMs than 16GB modules. This is useful when free slots are limited or when administrators want to preserve slots for later expansion, provided the server supports 32GB DDR4 RDIMMs.

2Rx8 Dual-Rank Architecture

M393A4G43BB4-CWE uses a 2Rx8 organization with two ranks of x8-width DRAM devices. Rank count and device width should be checked during replacement because a 32GB 2Rx8 RDIMM is not automatically equivalent to a 32GB x4-based module.

16 Gb x8 DRAM Identification

Intel validation data identifies Samsung K4AAG045WB-BCWE 16 Gb x8 DRAM and an E4 raw-card layout for this model. These BOM-level identifiers give procurement and maintenance teams another way to confirm the exact part beyond the 32GB DDR4-3200 label.

DDR4-3200 CL22 Compatibility Checks

The module is specified for DDR4-3200 operation with CL22 timing and a 1.2V, 288-pin registered interface. To use the rated speed, confirm processor support, BIOS qualification, DIMMs-per-channel limits, and balanced installation across memory channels.

M393A4G43BB4-CWE is best evaluated as a specific 32GB DDR4-3200 2Rx8 server-memory component. Its dual-rank x8 topology, 16 Gb x8 DRAM identification, and 32GB per-DIMM capacity provide practical reference points for upgrade planning and like-for-like replacement.