M391A2K43DB1-CWE Samsung 1x16GB DDR4 UDIMM ECC RAM

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Happyware Article Number:

SH9R5391-405994

Manufacturer Number:

M391A2K43DB1-CWE

Brand:

Samsung

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M391A2K43DB1-CWE

Enterprise DDR4 ECC UDIMM Server Memory for Stable Edge Compute with the M391A2K43DB1-CWE

The M391A2K43DB1-CWE is a Samsung 16GB DDR4-3200 ECC UDIMM designed for workstation and entry-server CPU platforms that require unbuffered memory, such as modern Intel Xeon E and select AMD server/workstation generations with ECC UDIMM support. In these architectures, the M391A2K43DB1-CWE delivers error correction at the memory channel level while preserving the electrical characteristics expected by UDIMM-only memory controllers.

By operating at DDR4-3200 JEDEC timings and 1.2V, the M391A2K43DB1-CWE supports balanced throughput for mixed CPU-bound and I/O-driven workloads where PCIe expansion and NVMe storage performance can be limited by memory latency and stability. The dual-rank design improves bank-level parallelism for virtualization and appliance services, while the low-profile 288-pin form factor supports dense chassis layouts and airflow constraints in edge nodes. Note that the M391A2K43DB1-CWE is UDIMM-only and is not compatible with RDIMM/LRDIMM memory populations.

Why Choose the M391A2K43DB1-CWE?

The M391A2K43DB1-CWE is a targeted upgrade for ECC UDIMM platforms where capacity scaling must remain within unbuffered limits while maintaining enterprise reliability. It enables predictable memory behavior across multi-DIMM configurations, supports straightforward field expansion, and aligns well with space- and power-conscious deployments that prioritize uptime over maximal DIMM density.

Samsung engineers server DRAM for sustained duty cycles, signal integrity, and strict validation against industry memory standards. This approach helps ensure the M391A2K43DB1-CWE integrates cleanly into modern data centre and edge operating models where consistency, traceability, and long-term availability matter.

Key Applications:

Entry server memory expansion
ECC-enabled workstation upgrades
Edge and SMB virtualization nodes
Network and security appliances
Storage gateway and caching services

At Happyware - Server Hardware you benefit from non-binding offers tailored to your build requirements for the M391A2K43DB1-CWE and bulk order discounts for standardizing memory across multiple nodes.

Technical details of M391A2K43DB1-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

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 M391A2K43DB1-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.