M391A4G43AB1-CWE Samsung 1x32GB DDR4 ECC RAM

Enterprise DDR4 ECC UDIMM Memory Expansion for 1DPC Platforms with the M391A4G43AB1-CWE

The M391A4G43AB1-CWE is a 32GB DDR4-3200 ECC unbuffered UDIMM designed for CPU platforms that implement DDR4 UDIMM channels, typically entry servers and workstation-class systems where reliable memory is required without registered buffering. In these architectures, the M391A4G43AB1-CWE supports predictable latency characteristics by keeping the signal path direct, aligning with 1DPC (one DIMM per channel) configurations that target stability at JEDEC operating points.

With a 288-pin DDR4 layout and dual-rank x8 organization, the M391A4G43AB1-CWE increases per-channel capacity while maintaining ECC protection across a 72-bit data path. This is a practical approach for virtualization hosts, application servers, and development systems that need incremental memory scaling while preserving CPU-to-memory balance. The module operates at DDR4-3200 with JEDEC-standard CL22 timings at 1.2V, supporting consistent behavior across validated server boards, and its low-profile form factor aids clearance in dense chassis and airflow-optimized layouts.

Why Choose the M391A4G43AB1-CWE?

The M391A4G43AB1-CWE provides an efficient density-to-compatibility profile for DDR4 UDIMM infrastructures that require ECC integrity without the electrical load characteristics of RDIMMs. It is suited to controlled scaling—adding capacity per node while keeping deployment straightforward—supporting repeatable performance across homogeneous fleets and minimizing qualification risk in ECC-capable platforms.

Samsung memory engineering emphasizes JEDEC compliance, controlled component binning, and long-term supply alignment for enterprise refresh cycles. The design focus is on stable operation within standard voltage and timing envelopes, supporting modern data centre expectations for reliability, serviceability, and predictable interoperability.

Key Applications:

• DDR4 ECC UDIMM server memory expansion
• Entry server and workstation upgrades
• General virtualization host scaling
• Application and web server memory uplift

At Happyware - Server Hardware you benefit from Bulk Order Discount options for standardized rollouts of the M391A4G43AB1-CWE, and you can extend the warranty up to 6 years to align coverage with enterprise lifecycle planning.