General

Engineer's Note

This unbuffered ECC UDIMM is optimized for entry-level servers and workstations running data-critical applications such as file servers, light virtualization, or NAS environments. Its Single Rank x8 configuration reduces electrical loading on the memory controller for improved signal integrity, while the 1.35V low-voltage operation and ECC engine deliver enhanced energy efficiency and reliable single-bit error correction to safeguard data integrity.

Technical Specs & Insights

1. ECC error detection and correction silently prevents single-bit memory errors from cascading into data corruption or system crashes, a non-negotiable safeguard for always-on server workloads handling financial or medical records.

2. Unbuffered signal path trims access latency, giving single-socket, entry-level servers a responsiveness advantage in latency-sensitive tasks such as dedicated game hosting or small database serving.

3. Low 1.35V operation curbs power draw and waste heat, enabling higher density within confined rack space while reducing cooling costs for cost-conscious data centers.

4. 1600MT/s transfer rate provides enough peak bandwidth to keep a cluster of lightweight virtual machines running concurrently without memory-side stalling under moderate consolidation.

5. Single Rank x8 organization minimizes electrical loading on the memory channel, ensuring stable signal integrity across all DIMM slots when capacity is scaled up on mainstream server boards.

Why These Specs Matter

For mission-critical microservers and always-on NAS appliances, the Samsung M391B5173BH0-YK0 memory module delivers four real-world advantages that directly protect your operations. Its error-correcting code (ECC) continuously detects and corrects single-bit data errors, preventing silent corruption that can crash a virtualized host or irreversibly damage a ZFS storage pool—your 24/7 services stay intact and your data remains trustworthy. Operating at just 1.35V, this DDR3L module dramatically reduces power draw and heat dissipation, a decisive factor in fanless edge servers where thermal buildup shortens hardware life and inflates energy bills. The 1600MHz speed and CL11 latency then supply the responsive bandwidth needed for in-memory databases and multiple lightweight VMs, eliminating sluggish performance during peak loads. Finally, its unbuffered, single-rank x8 architecture ensures flawless compatibility with entry-level server boards, maintaining clean signal integrity for rock-solid stability. In short, this ECC UDIMM transforms a modest capacity into a dependable, energy-smart backbone for the workloads you simply cannot afford to lose.

Endurance & Reliability

General Virtualization
For general virtualization, reliability and moderate capacity are paramount. Deploy these 4 GB ECC UDIMMs in matched pairs across all available memory channels—typically four modules per socket for a 16 GB pool—to gain interleaved bandwidth while guarding against single-bit errors. This balanced configuration supports multiple light VMs and ensures data integrity under 24×7 operation.

In-Memory Database
An in-memory database demands maximum capacity and fault tolerance. Populate every DIMM slot with these low-voltage modules, aiming for at least 32 GB (eight modules) on a single-socket board. ECC is non-negotiable to prevent silent data corruption, and the 1.35 V operation reduces heat and power stress during sustained high-utilization caching workloads.

High-Performance Computing
HPC workloads thrive on memory bandwidth. Install six or eight identical modules to enable triple- or quad-channel mode, delivering aggregated throughput critical for simulation and modeling. The single-rank design aids signal integrity at 1600 MT/s, while ECC ensures long-running compute jobs produce trustworthy results.

Verified Compatibility

Rigorously tested, compatible with Dell PowerEdge R210 II, HP ProLiant DL360 G7, Lenovo ThinkServer TS140.

FAQ