General

Engineer's Note

This unbuffered ECC UDIMM with a single-rank x8 organization and low 1.35V operation is best suited for entry-level servers and small-business NAS systems where data integrity and power efficiency are critical. Its DDR3-1600 speed and CL11 latency provide a balance of bandwidth and responsiveness for light virtualization, file services, and memory-database workloads that require hardware error correction without the cost of registered memory.

Technical Specs & Insights

1. ECC protection corrects single-bit memory errors in real time, safeguarding data integrity for transactional databases and virtualized workloads that cannot tolerate silent corruption.
2. Unbuffered architecture eliminates register latency, enabling faster command-to-data response that benefits latency-sensitive hosting and small-scale financial processing.
3. Single-rank design lightens the electrical load on the memory bus, preserving signal stability when multiple DIMMs are installed in dense entry-level server configurations.
4. Low-voltage operation trims overall power draw and waste heat, directly reducing cooling costs in microserver clusters that run around the clock.
5. A compact capacity targets dedicated lightweight hypervisors and network appliance roles, delivering just enough headroom for the OS stack without wasting energy on unused cells.

Why These Specs Matter

The MT9KSF25672AZ-1G6K1 is a server-grade UDIMM engineered for micro-servers, network-attached storage, and entry-level workstations where data integrity and energy efficiency are non-negotiable. Its four defining characteristics translate directly into tangible operational advantages.

Error Correction Code (ECC) is the module’s backbone. In a NAS that methodically catalogs financial records or patient imaging archives, a single undetected bit-flip from background radiation can corrupt a file system. ECC silently detects and corrects single-bit errors, preserving the integrity of your data at rest and during continuous writes—this is not a luxury, it is insurance against silent data corruption. Coupled with an unbuffered, single-rank x8 design, the UDIMM architecture delivers the lowest electrical loading on the memory bus, ensuring broad compatibility across aging but mission-critical Intel Xeon E3 and AMD Opteron platforms that cannot accept registered memory. It means you can keep a customized legacy control server or a proprietary medical device online without revalidating the entire system.

The 1.35V DDR3L low-voltage operation reduces the thermal strain inside a dense 1U chassis or a fanless industrial enclosure. Less heat generation extends capacitor and VRM lifespan, while the 1600MHz speed at CL11 provides ample bandwidth for a lightweight hypervisor juggling two virtual machines or a caching database instance. In a small retail branch server running real-time inventory queries and point-of-sale encryption, this memory ensures each transaction is processed without timing errors or needless power draw. It transforms a simple 2GB upgrade into a reliability mandate—keeping your always-on services accurate, cool, and affordable.

Endurance & Reliability

Server Memory Identification
The MT9KSF25672AZ-1G6K1 is a 2GB DDR3-1600 ECC Unbuffered UDIMM (1.35V low voltage). Its error correction and unbuffered design target entry-level servers and workstations that support ECC UDIMMs, rather than desktop or laptop systems. Capacity planning must account for the small 2GB capacity while leveraging ECC reliability.

General Virtualization
A hypervisor hosting multiple VMs needs a minimum of 16–32GB to avoid swapping. With 2GB modules, install at least eight identical sticks across dual channels—four per CPU in a two-socket server—to enable balanced interleaving and adequate capacity. Always populate symmetrically; mixing sizes defeats ECC and degrades performance.

In-Memory Database
Real-time databases like Redis or SAP HANA thrive on large, contiguous memory pools. Maximum module count is critical: a dual-socket board with 12 slots yields only 24GB, limiting you to small dev/test instances. For production, plan to replace these with higher-density RDIMMs, as 2GB UDIMMs cannot meet the workload’s typical hundreds of gigabytes.

High-Performance Computing (HPC)
HPC workloads prize bandwidth per core over total capacity. Populate one 2GB module per memory channel to sustain peak throughput and lock-step NUMA locality. Where a node offers eight channels, total 16GB supports bandwidth-sensitive codes with moderate datasets; fill all slots for double-channel interleaving. Monitor for capacity exhaustion and scale out nodes if dataset size grows.

Verified Compatibility

Rigorously tested, this ECC UDIMM fits servers like Dell PowerEdge R210 II, HP ML310e Gen8, Lenovo TS140.

FAQ