General

Engineer's Note

This DDR4-3200 ECC Unbuffered DIMM is a dual-rank x8 module purpose-built for entry-level servers and professional workstations where data integrity is critical, such as virtualization hosts or engineering simulation platforms. Its ECC support corrects single-bit errors in real time, while the dual-rank organization improves memory bandwidth via rank interleaving—all at a low 1.2 V to reduce power consumption in always-on deployments.

Technical Specs & Insights

1. ECC protection silently corrects single-bit memory errors, ensuring data integrity for mission-critical applications like financial transactions or virtualization hosts where undetected corruption is unacceptable.
2. Dual Rank x8 organization exploits rank interleaving to boost effective memory bandwidth, accelerating database queries and reducing latency under concurrent multi-tenant workloads.
3. 3200MHz transfer speed elevates the memory throughput ceiling, directly improving the responsiveness of in-memory caches and containerized microservices in dense server deployments.
4. 16GB capacity per module strikes an optimal balance between memory density and cost, allowing SMB servers to maximize usable RAM within limited DIMM slots for virtual machine consolidation.
5. Unbuffered design reduces access latency by eliminating the register chip, benefiting latency-sensitive edge computing and small-scale hosting where every clock cycle contributes to faster request processing.

Why These Specs Matter

The Samsung M391A2K43DB1-CWEQ 16 GB DDR4-3200 ECC UDIMM directly addresses the demands of small server and workstation environments. Its error correction code eliminates silent data corruption—critical when an in-memory database like Redis holds your live transactions; a single bit flip can poison an entire dataset, but ECC ensures every query returns accurate results, preventing costly diagnostic headaches. The 3200 MT/s speed provides 25.6 GB/s bandwidth, shrinking I/O wait time when multiple virtual machines contend for memory. Operating at just 1.2 V, this module draws significantly less power than legacy alternatives, lowering both heat and electricity costs in always-on storage or virtualization hosts. Finally, the dual-rank x8 organization enables rank interleaving, hiding refresh cycles and boosting effective throughput by up to 10% under mixed workloads, which is invaluable for a hypervisor juggling dozens of services. For you, that means fewer unexplained crashes, snappier responses, and lower total cost of ownership.

Endurance & Reliability

Memory Type: Server Memory (ECC UDIMM)
This is a DDR4-3200 ECC Unbuffered DIMM, designed for entry-level servers and workstations that require data integrity without registered clock drivers.

General Virtualization
Balance capacity and cost by populating all memory channels with one 16GB module per channel—typically six or eight modules in a dual-socket system—to provide 96–128GB of ECC-protected memory. This ensures adequate headroom for mixed VM workloads while maintaining interleaved memory bandwidth and avoiding the latency penalty of mixing ranks improperly.

In-Memory Database
Maximize capacity and reliability by installing identical dual-rank x8 modules in every available slot. For a single-socket server with four channels, four 16GB ECC UDIMMs deliver 64GB of fast, error-corrected memory, ideal for Redis or Memcached instances. For larger datasets, validate the platform’s maximum UDIMM support and populate fully to avoid costly page faults.

High-Performance Computing (HPC)
Prioritize sustained memory bandwidth by installing one dual-rank DIMM per channel—usually six or eight modules for a dual-socket compute node. Using 3200MT/s ECC UDIMMs at the native speed maintains high throughput per core for simulation and modeling codes. Keep configurations symmetric across CPUs to exploit all memory controllers equally and reduce thread contention.

Verified Compatibility

Rigorously tested, server-validated ECC UDIMM for Dell PowerEdge T150, HPE ProLiant DL20 Gen10, Lenovo ThinkSystem ST250, and more.

FAQ