M391A2G43BB2-CWE Samsung 1x16GB DDR4 UDIMM ECC RAM

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Happyware Article Number:

SH3R4825-654929

Manufacturer Number:

M391A2G43BB2-CWE

Brand:

Samsung

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M391A2G43BB2-CWE

Enterprise DDR4 ECC UDIMM Memory Expansion with the M391A2G43BB2-CWE for Reliable Server Nodes

The M391A2G43BB2-CWE is a Samsung DDR4 ECC UDIMM engineered for CPU platforms that explicitly support unbuffered ECC memory, making it a precise fit for edge servers, branch nodes, and appliance-class systems. By providing 16GB capacity at DDR4-3200, the M391A2G43BB2-CWE targets predictable latency and consistent bandwidth for general-purpose x86 workloads where data integrity must be maintained without the buffering behavior of RDIMM/LRDIMM designs.

Architecturally, the M391A2G43BB2-CWE enables scalable memory population in 288-pin DDR4 UDIMM slots while preserving ECC protection across the 72-bit data path. Dual-rank x8 organization supports balanced interleaving on compatible memory controllers, and the 1.2V operating profile aligns with modern power envelopes in dense chassis. This module integrates cleanly into systems where PCIe expansion and storage performance are already provisioned, ensuring memory is not the limiting factor for OS boot stability, virtualization overhead, or service responsiveness. Compatibility is deployment-critical: the M391A2G43BB2-CWE is intended for ECC UDIMM-capable platforms and is not interchangeable with RDIMM or LRDIMM memory architectures.

Why Choose the M391A2G43BB2-CWE?

The M391A2G43BB2-CWE delivers an enterprise-appropriate density-to-power ratio with ECC resilience in a UDIMM form factor, supporting straightforward capacity scaling for distributed infrastructure. It is well suited for standardized rollouts where deterministic behavior, low-profile mechanical fit, and repeatable qualification matter across many identical nodes.

Samsung designs server memory with a focus on signal integrity, thermal stability, and sustained reliability under continuous duty cycles, aligning with current data centre validation practices and lifecycle-managed hardware baselines.

Key Applications:

Server boot and system memory expansion
Edge and branch compute nodes
Security and networking appliances
Virtualization host RAM upgrades

At Happyware - Server Hardware you benefit from non-binding offers tailored to your platform requirements for the M391A2G43BB2-CWE, enabling efficient procurement for planned rollouts and compatibility-controlled upgrades.

Technical details of M391A2G43BB2-CWE

Capacity:

16GB

Generation:

DDR4

Single Module Capacity:

16GB

Frequency:

3200MHz

Form Factor:

DIMM

DIMM Type:

DDR4

ECC:

ECC

Registered/Buffered:

Unbuffered

Modules Quantity:

Pins:

288

Voltage:

1.2V

Rank:

Dual-Rank x8

Module height:

JEDEC:

PC4-25600E

CAS Latency:

Row-to-Column Delay (tRCD):

Row Precharge Time (tRP):

How long is the Warranty and how you can get technical support for M391A2G43BB2-CWE

Warranty:	24 months (part)
RMA through customer:	yes
RMA Url:	https://www.samsung.com/us/support/service/
Description:	Items must be returned first; no advance replacements. Guaranteed repair or replacement times may vary by product type. On-site service is available for specific products such as large home appliances and large TVs.