General

Engineer's Note

This unbuffered ECC UDIMM is purpose-built for entry-level servers and small-business NAS or workstation platforms, where ECC error correction ensures data integrity in always-on memory database and light virtualization workloads. Its dual-rank x8 organization and 240-pin 1.5V DDR3-1600 design deliver stable, unbuffered signaling and improved bandwidth efficiency compared to single-rank modules, making it ideal for capacity-conscious systems that cannot tolerate silent data corruption.

Technical Specs & Insights

1. ECC protection detects and corrects single-bit errors in real time, safeguarding transactional data integrity for always-on small business servers and NAS appliances.
2. Unbuffered signal type reduces memory access latency, improving responsiveness for lightweight virtualization hosts where every microsecond of service time matters.
3. Dual Rank x8 organization enables rank interleaving, boosting effective memory bandwidth during peak multi-VM workloads without adding extra DIMMs.
4. The 1600MHz clocked data rate delivers 12.8 GB/s of peak throughput per channel, comfortably feeding modern hypervisor schedulers under moderate consolidation.
5. CL11 timing strikes a balance between access speed and stability, keeping command processing predictable in thermally constrained 1U server enclosures.

Why These Specs Matter

In servers and workstations where uptime and data accuracy are non‑negotiable, the MT18JSF51272AZ‑1G6K1 memory module directly addresses the hidden risks that keep IT managers awake at night. This is an unbuffered ECC UDIMM with a 240‑pin layout, purpose‑built for platforms that demand error correction without the higher latency of registered memory. Its ECC feature automatically detects and corrects single‑bit errors—an essential safeguard in any environment where cosmic radiation or electrical noise could silently corrupt a memory cell. For a virtualized cluster running multiple VMs on a single host, that protection means a flipped bit will not cascade into a kernel panic, keeping your entire tenant stack stable. In an in‑memory database such as Redis or Memcached, where data lives entirely in RAM, ECC prevents a single undetected error from poisoning transactions or triggering costly data reconstruction.

The dual‑rank x8 organization also matters more than most spec sheets reveal. It allows the memory controller to interleave access across two internal ranks, which raises effective bandwidth under concurrent loads. When your hypervisor is juggling a dozen virtual machines, that interleaving reduces stalls and delivers more consistent read latency than a single‑rank module would—practical responsiveness you’ll notice during peak database query storms. Meanwhile, the DDR3‑1600 speed and standard 1.5 V operating voltage strike a balance between thermal headroom and performance, keeping your 24/7 server builds reliable without excessive power draw. This module turns a routine memory upgrade into a pillar of integrity for small business servers, NAS units, and entry‑level workstation builds that simply cannot afford silent data degradation.

Endurance & Reliability

This is a server-grade DDR3-1600 ECC Unbuffered DIMM (UDIMM) with 1.5 V and dual-rank x8 organization, ideal for single-socket workstations and entry-level servers where data integrity and moderate density are required. Capacity planning guidance follows.

General Virtualization
For light consolidation on a Xeon E3 platform, deploy a matched pair of these 4 GB modules (8 GB total) to enable dual-channel interleaving and safeguard ECC functionality. As VM counts grow, populate all four DIMM slots with identical 4 GB sticks (16 GB) to maintain symmetric channels and predictable latency under hypervisor memory overcommit.

In-Memory Database
In-memory stores like Redis or small analytical databases benefit from low-latency, error-protected capacity. Fill every memory slot on the motherboard with four 4 GB UDIMMs (16 GB) to achieve maximum channel utilization and to avoid unbalanced memory access. The dual-rank design improves command/address parallelism, while ECC corrects single-bit faults that could corrupt cached datasets.

High-Performance Computing
Density-optimized single-socket HPC nodes can use these modules in a fully balanced configuration of four identical 4 GB DIMMs (16 GB), providing predictable bandwidth for memory-bound parallel tasks. If workload scaling demands more capacity, evaluate the migration to registered DIMMs; within this UDIMM limit, schedule jobs to fit the 16 GB footprint and rely on ECC to maintain result reliability during extended runs.

Verified Compatibility

Validated for servers: fits Dell PowerEdge R210 II, T20, HP ProLiant ML310e Gen8, and more.

FAQ