M386A8K40DM2-CWE Samsung 1x64GB DDR4 RDIMM ECC RAM

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Happyware Article Number:

SH9R3805-415532

Manufacturer Number:

M386A8K40DM2-CWE

Brand:

Samsung

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M386A8K40DM2-CWE

High-Density DDR4 ECC LRDIMM Server Memory Expansion with the M386A8K40DM2-CWE

The M386A8K40DM2-CWE is a 64GB DDR4-3200 ECC LRDIMM designed for enterprise servers that require higher per-socket memory capacity without sacrificing signal integrity at scale. By using a load-reduced architecture, the M386A8K40DM2-CWE supports larger memory populations on compatible CPU platforms while maintaining stable operation under continuous, multi-tenant workloads.

Deployed in modern x86 server generations that support RDIMM/LRDIMM channels, the M386A8K40DM2-CWE enables denser virtualization and in-memory datasets by reducing electrical loading compared with standard RDIMMs. This aligns with architectures that prioritize PCIe expansion for accelerators and high-speed NICs while keeping memory bandwidth and capacity balanced for database, analytics, and software-defined storage nodes. With DDR4-3200 performance and ECC protection, the M386A8K40DM2-CWE helps sustain predictable latency behavior for transaction-heavy applications and consolidation-focused clusters.

Why Choose the M386A8K40DM2-CWE?

The M386A8K40DM2-CWE is selected when platform scalability and capacity-per-slot are decisive, particularly in LRDIMM-qualified systems where quad-rank density is necessary. It provides a practical density-to-performance profile for expanding hosts without redesigning storage or PCIe layouts, while ECC and server-grade validation support operational continuity in enterprise change windows.

Samsung engineers server DRAM with a focus on consistent manufacturing control, qualification discipline, and long-life availability aligned to data centre standards. The M386A8K40DM2-CWE follows this approach with low-profile mechanical compatibility and parameters tailored for predictable deployment in high-density racks.

Key Applications:

Enterprise server memory upgrades for DDR4 LRDIMM platforms
Virtualization and private cloud hosts
In-memory databases and caching tiers
Analytics and reporting nodes
Scale-up application servers

At Happyware - Server Hardware you benefit from non-binding offers tailored to your rollout plan for M386A8K40DM2-CWE deployments and from bulk order discounts for standardized capacity expansion across clusters.

Technical details of M386A8K40DM2-CWE

Capacity:

64GB

Generation:

DDR4

Single Module Capacity:

64GB

Frequency:

3200MHz

Form Factor:

DIMM

DIMM Type:

DDR4 LRDIMM

ECC:

ECC

Registered/Buffered:

Registered

Modules Quantity:

Pins:

288

Voltage:

1.2V

Rank:

Quad-Rank x4

Module height:

JEDEC:

PC4-25600L

CAS Latency:

Row-to-Column Delay (tRCD):

Row Precharge Time (tRP):

How long is the Warranty and how you can get technical support for M386A8K40DM2-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.