General

Engineer's Note

This ECC Unbuffered DIMM targets professional workstations and entry-level servers that demand data integrity for critical workloads like memory-resident databases and virtualization. Its dual-rank x8 organization maximizes interleaving efficiency, while the native ECC and CL17 latency at 2400MHz deliver reliable, responsive throughput for compute-intensive environments.

Technical Specs & Insights

1. ECC error correction proactively detects and corrects single-bit memory faults, safeguarding data integrity for always-on financial services and database transaction logs.
2. A generous sixteen-gigabyte capacity per module supports densely consolidated virtual machines, allowing more guest instances per node without sacrificing memory headroom.
3. Dual Rank x8 configuration leverages rank interleaving to keep the memory channel fully pipelined, which directly improves throughput under heavy concurrent query loads typical of back-end analytics servers.
4. The standard DDR4-2400 bandwidth provides a reliable performance floor for entry-level servers, ensuring steady response rates for structured data operations and content delivery.
5. Low 1.2V operation trims overall platform power consumption, helping to reduce thermal buildup and operational expense in multi-slot rack environments where every watt counts.

Why These Specs Matter

Imagine deploying a reliable virtualization host for your small business or running a sensitive in-memory database like Redis where every bit counts. The Samsung M391A2K43BB1-CRCQY is engineered to eliminate the risks that keep you awake at night. With hardware ECC, this 16GB DDR4 module detects and corrects single-bit errors caused by background radiation, so a flipped bit in a virtual machine’s memory won’t silently corrupt a financial transaction or crash your database mid-query. Its unbuffered design, paired with a dual-rank x8 organization, directly feeds the CPU’s memory controller with low-latency access while interleaving memory banks for higher throughput. This means your multiple VMs or containerized applications experience smoother multitasking and faster data retrieval under load. Operating at just 1.2V, the module draws significantly less power than older generations, reducing thermal buildup inside your 24/7 server or NAS enclosure. The result: tangible savings on electricity and cooling, plus rock-solid stability you can trust for your always-on services, from file sharing to real-time analytics.

Endurance & Reliability

General Virtualization
Deploy identical UDIMM ECC modules in balanced channels to maximize VM density. Start with four 16GB sticks for 64GB total across a dual-socket platform, which comfortably supports 20–30 light VMs, and scale to eight modules for 128GB when consolidating heavier workloads. Always populate identical DIMMs per memory channel to maintain error correction integrity and avoid NUMA imbalances.

In-Memory Database
Minimize latency and maximize capacity by filling all available channels with dual-rank x8 modules, as the dual-rank organization provides higher bank-level parallelism critical for real-time analytics. Configure six or eight 16GB UDIMMs (96–128GB) to keep entire datasets resident, preventing swap I/O penalties. Pair with a low-CAS-latency kit and ensure adequate airflow, since increased capacity raises thermal load.

High-Performance Computing (HPC)
Optimize bandwidth per core by populating one 16GB DIMM per memory channel—typically eight modules on a dual-socket Xeon E-2300 or entry-level Scalable node—to saturate memory controllers. Dual-rank x8 DDR4-2400 ECC UDIMMs deliver reliable 19.2 GB/s per channel, ideal for simulation codes whose working sets fit within 128GB. Balance capacity against core count, and verify that no buffering overhead limits bursty access patterns common in MPI jobs.

Verified Compatibility

Rigorously tested, this ECC UDIMM fits Dell PowerEdge T140, R240, HPE ML30 Gen10, Lenovo ST250, and more.

FAQ