General

Engineer's Note

This DDR3-1600 UDIMM with ECC is a server-grade module purpose-built for entry-level servers and workstations, delivering single-bit error correction to ensure data integrity in platforms running light virtualization or file services. The single-rank x8 configuration and unbuffered design provide broad compatibility and stable signal integrity, making it an ideal cost-effective upgrade for systems that require reliable 24/7 operation without the overhead of registered memory.

Technical Specs & Insights

1. ECC error correction safeguards transactional data integrity, essential for entry-level servers handling financial records or small databases without risking silent corruption.
2. Unbuffered signal design reduces access latency, benefiting latency-sensitive edge server applications like real-time monitoring or caching proxies.
3. A modest 2GB capacity fits purpose-built server appliances where a lean, dedicated memory footprint prevents unnecessary OS paging.
4. 1600MHz clock speed provides sufficient throughput for steady network services, ensuring consistent responsiveness under moderate concurrent requests.
5. Single Rank x8 configuration lightens the memory controller load, improving stability in always-on microservers where reliability outweighs peak bandwidth.

Why These Specs Matter

Based on the 240-pin UDIMM form factor and the inclusion of Error Correcting Code, the M391B5773DH0-CK0 is unambiguously a server-grade DDR3 memory module, purpose-built for entry-level servers and small business workstations where data fidelity takes absolute precedence over sheer capacity. Its four critical attributes collectively prevent costly downtime and silent data corruption in real-world infrastructure.

First, the ECC engine directly guards against single-bit errors caused by cosmic radiation or electrical noise. In a ZFS-powered NAS that safeguards years of financial records or CAD files, this error correction is the difference between a trusted archive and a slowly corrupting backup. Second, the unbuffered, single-rank x8 design minimizes command latency and electrical loading on the memory controller, a decisive advantage when the module is deployed in a lightweight virtualization host running a pfSense firewall and a Dockerized Redis cache. Every millisecond of response delay is shaved off, keeping real-time services snappy even under simultaneous VM pressure. Finally, the 1600 MHz clock wrapped in a standard 1.5V envelope guarantees broad compatibility across legacy server boards while delivering the 12.8 GB/s bandwidth needed to feed multiple essential services. For the IT manager maintaining a reliable micro-server cluster, this memory means deploying a zero-surprise, integrity-hardened workhorse rather than a risky consumer part.

Endurance & Reliability

Server Memory Identification
The Samsung M391B5773DH0-CK0 is a DDR3-1600 ECC Unbuffered DIMM (UDIMM) with a 2 GB capacity and 1.5V operating voltage. Its ECC support and 240-pin form factor place it exclusively in entry-level servers or workstations using platforms like Intel Xeon E3/E5-1600/2600 single-socket boards. Below are capacity planning recommendations for typical server workloads, accounting for the module’s limited per-DIMM density.

General Virtualization
Lightweight hypervisors can start with a balanced configuration of four identical modules (8 GB total) installed in pairs across dual-channel memory banks, enabling basic redundancy and ECC protection. For more demanding virtual machine fleets, populate all available slots—often up to eight modules (16 GB)—on the motherboard to maximize capacity without sacrificing interleaving. Always use matched 2 GB UDIMMs per channel to maintain consistent timing and avoid BIOS training issues.

In-Memory Database
In-memory databases require maximum capacity and low latency. Install a full complement of these 2 GB modules across every channel (e.g., 8×2 GB = 16 GB) to provide the largest possible footprint on a single-socket UDIMM platform. Leverage the single-rank x8 design for efficient command scheduling, and keep all channels populated identically to sustain high throughput. Consider memory mirroring only if absolute data integrity outweighs the halved capacity, though 16 GB is already tight.

High-Performance Computing (HPC)
HPC workloads benefit most from peak memory bandwidth. Populate one module per channel (e.g., four modules on a dual-channel Xeon E3 or six on a triple-channel Xeon 3600/5600 series) to activate symmetric multi-channel interleaving. This yields 8–12 GB of ECC-protected memory with minimized access latency. Avoid using unmatched DIMMs or leaving channels empty, as bandwidth degrades significantly. Given the small module size, prioritize applications with modest memory footprints but heavy floating-point or simulation demands.

Verified Compatibility

Engineered for servers, rigorously tested. Compatible with Dell PowerEdge R210 II, HP ProLiant DL320e Gen8, Lenovo ThinkServer TS140.

FAQ