General

Engineer's Note

Designed as an unbuffered ECC UDIMM, this 16GB DDR4-3200 module is purpose-built for entry-level servers and professional workstations where data integrity is critical without the overhead of registered memory. Its dual-rank x8 organization enhances memory interleaving for improved throughput, while ECC automatically corrects single-bit errors to ensure stable operation under continuous compute loads like file serving and light virtualization.

Technical Specs & Insights

1. ECC error correction silently detects and repairs single-bit memory faults, ensuring transactional integrity for always-on databases and virtualization hosts.
2. Unbuffered signal architecture trims access latency, giving lightweight business servers faster data retrieval without the extra clock cycle delay of registered modules.
3. A 16GB capacity per stick offers ample logical space for multiple containerized microservices or moderate VM density in a compact, power-conscious entry server.
4. Dual Rank x8 organization keeps the memory channel busy by interleaving operations, which sustains throughput under concurrent query loads typical of file-sharing and web-caching roles.
5. 3200 MT/s data rate lifts overall memory bandwidth, directly cutting response time for in-memory analytics and high-concurrency SaaS workloads.

Why These Specs Matter

When you are running a local virtualization lab or a network-attached storage appliance that safeguards your business records, a single undetected memory error is all it takes to corrupt a virtual disk or silently flip a bit in a financial file. The Samsung M391A2K43DB1-CWE is engineered to eliminate exactly that fear. This 16 GB DDR4-3200 module is an unregistered ECC UDIMM, which means it delivers true error correction without the extra latency of a registered buffer, keeping your workstation or entry-level server fast and responsive.

The ECC logic continuously catches single-bit upsets caused by background radiation, which is non-negotiable if you leave a media rendering job running overnight or rely on a ZFS-based NAS where in-memory checksums demand absolute integrity. With a dual-rank x8 organization and a 3200 MT/s clock, the module uses rank interleaving to keep data streaming smoothly during heavy multitasking—imagine scrubbing through a 4K timeline while your backup deduplication runs in the background. And because it operates at just 1.2 V, you get all that protection without a thermal penalty, a critical detail in compact tower cases or small-office servers where every watt and degree matters. This is the memory that lets you trust the result, not just the benchmark.

Endurance & Reliability

General Virtualization
For entry-level virtualization, start with four identical 16 GB modules (64 GB total) in a balanced dual‑channel or quad‑channel configuration to comfortably run 10–15 moderate VMs. Scale up by populating all eight DIMM slots for 128 GB, which strengthens memory interleaving and ECC reliability under sustained multi‑tenant loads.

In‑Memory Database
In‑memory databases demand the full working set in RAM. Install the maximum number of modules the server supports—typically eight 16 GB ECC UDIMMs (128 GB) on a single‑socket platform. Even distribution across memory channels delivers consistent low latency and high bandwidth, while ECC eliminates bit errors without performance overhead.

High‑Performance Computing (HPC)
HPC workloads are bandwidth‑sensitive. Populate all memory channels uniformly: use six modules (96 GB) on a six‑channel board, or eight modules (128 GB) on an eight‑channel board. Stick to matched dual‑rank x8 UDIMMs and avoid mixing different ranks or speeds, preserving uniform latency and peak throughput across every channel.

Verified Compatibility

Server memory rigorously tested; compatible with Dell PowerEdge T150, T350, R250, Lenovo ST250 V2, HPE ML30 Gen10 Plus.

FAQ