General

Engineer's Note

This DDR4-3200 UDIMM with ECC is tailored for professional workstations and entry-level servers demanding data integrity. Its single-rank x8 organization and unbuffered signal path deliver low latency and broad compatibility, while ECC reliably corrects single-bit errors to maintain stability in memory-intensive workloads.

Technical Specs & Insights

1. ECC memory silently corrects single-bit errors in real time, preserving data integrity for mission-critical virtualization and database workloads and preventing costly silent data corruption.
2. A modest per-DIMM capacity offers a fine-grained building block that allows operators to right-size memory for lightweight containerized services and scale horizontally without wasting resources.
3. High-speed DDR4 data transfers boost per-channel bandwidth, directly accelerating in-memory analytics and reducing response lag for concurrent financial transactions and real-time dashboards.
4. The unbuffered signal path strips out register latency, delivering the minimal request-to-data turnaround essential for ultra-low-latency edge servers and high-frequency trading platforms.
5. A single-rank electrical layout reduces bus loading and crosstalk, ensuring stable signal integrity and full-speed operation in dense server configurations where every DIMM must be rock-solid.

Why These Specs Matter

The Samsung M391A1K43DB2-CWEQY is an 8GB DDR4-3200 UDIMM with ECC, purpose-built for entry-level servers and workstations where silent data corruption is simply not an option. In a small business virtualization host running multiple lightweight VMs, every memory transaction must be exact. The onboard ECC actively detects and corrects single-bit errors caused by background radiation, preventing a flipped bit from cascading into a hypervisor crash or a corrupted customer database. Paired with a 3200MT/s transfer rate and CL22 latency, this module accelerates in-memory caching engines like Redis, ensuring sub-millisecond response times for real-time analytics dashboards. Meanwhile, 1.2V DRAM operation substantially reduces thermal load compared to legacy voltages, which translates directly into lower fan noise and energy bills for a 24/7 NAS appliance that safeguards critical legal documents. And because this is an unbuffered DIMM with direct electrical paths to the CPU, it avoids the additional clock-cycle lag of registered alternatives, making it the cost-effective, low-latency foundation for single-socket platforms that cannot compromise on reliability or speed.

Endurance & Reliability

General Virtualization
For a typical hypervisor host, install at least four identical 8 GB modules (32 GB total) to populate dual-channel or quad-channel memory controllers and maximize throughput. ECC UDIMMs protect guest VMs from single-bit errors, which is essential for stable, long-running services. Scale to eight modules (64 GB) when hosting larger workloads or more VMs, always filling channels symmetrically to avoid bandwidth penalties.

In-Memory Database
In-memory stores like Redis or SAP HANA demand absolute data integrity and low latency. Populate all available channels with these 8 GB ECC UDIMMs to reach 64 GB or higher, combining capacity with error correction for mission-critical operations. Uniform single-rank x8 modules minimize electrical loading, and the 1.2 V rating helps control thermal profiles in dense, 24×7 deployments.

High-Performance Computing (HPC)
HPC jobs benefit from peak memory bandwidth. Use four or eight matched 8 GB DDR4‑3200 UDIMMs to fully leverage multi-channel architectures, ensuring no channel is left empty. ECC is critical for long-running simulations, where a silent data corruption could invalidate results. Maintain identical rank and timings (CL22) across all slots to guarantee stable, repeatable performance under sustained floating-point and vector workloads.

Verified Compatibility

Rigorously tested, compatible with Dell PowerEdge T350, HPE ProLiant DL20 Gen11, and Lenovo ThinkSystem ST250 V3.

FAQ