General

Engineer's Note

This 4GB DDR3-1600 RDIMM with ECC and registered signaling is purpose-built for server platforms, delivering the data integrity and stability required for virtualization, in-memory databases, and mission-critical workloads. Its single-rank x4 configuration combined with CL11 latency offers a balanced trade-off between memory density and electrical loading, ensuring reliable operation in multi-slot server environments.

Technical Specs & Insights

1. ECC silently corrects single-bit errors in real time, preserving transactional integrity for virtualized databases and financial services that demand nonstop uptime.
2. Registered buffering decouples command/address signaling from DRAM loading, allowing fully populated server channels to scale memory capacity without signal collapse.
3. A lean capacity module fits perfectly into edge gateways, boot-from-SAN configurations, and lightweight container hosts where overprovisioning would waste power and licensing budgets.
4. Elevated DDR3 throughput keeps agent-based monitoring and web server caches responsive, preventing memory bottlenecks during peak traffic windows.
5. Single Rank x4 organization tightens fault containment and reduces electrical load, delivering the predictable latency required by high-assurance hypervisor clusters.

Why These Specs Matter

When deploying a virtualization cluster, a single undetected memory error can corrupt multiple guest machines simultaneously, leading to cascading failures. The MT18JSF51272PZ-1G6K1FG, a 4GB DDR3-1600 Registered DIMM, is engineered to prevent exactly that. Its Error Correcting Code (ECC) continuously detects and corrects single-bit flips, which are increasingly common in dense server farms due to cosmic radiation and silicon aging. This directly safeguards the integrity of your in-memory databases like Redis, where a flipped bit in a cache entry can return wrong pricing or session data.

Combined with its Registered architecture, the module buffers command and address signals, allowing the memory controller to drive large-capacity configurations across multiple DIMMs per channel without signal degradation. This stability is vital when you expand to 384GB or more for heavy virtualization workloads. The single-rank x4 organization further optimizes bandwidth and reduces loading, ensuring consistent 1600MT/s throughput even under the relentless pressure of hundreds of concurrent database queries and live migrations. For IT managers, this module means uninterrupted uptime, data that remains accurate transaction by transaction, and predictable performance in scale-out server environments where memory integrity and reliability are non-negotiable.

Endurance & Reliability

Server Memory Identified: This is a registered DDR3-1600 ECC RDIMM (PC3-12800, 1.5V, CL11, single rank x4). Its ECC and registered architecture are essential for data integrity and stability in multi-slot server configurations.

General Virtualization
For light to moderate virtualization with a few dozen VMs, populate at least six to eight of these 4GB modules to provide 24–32 GB of memory. Balance DIMMs across memory channels (e.g., one DIMM per channel) to maximize bandwidth while leaving headroom for overcommitment. Avoid mixing ranks unnecessarily; use identical single-rank x4 modules to ensure uniform access timing.

In-Memory Database
In-memory databases demand low latency and high capacity, so saturate all memory channels with at least two DIMMs per channel (2DPC) to reach 64 GB or more. With this 4GB single-rank module, 2DPC configurations will not overload the memory bus, preserving 1600 MT/s speed. Monitor data temperature and scale out with additional nodes when dataset size approaches physical limits.

High-Performance Computing (HPC)
HPC applications require peak memory bandwidth, so install one DIMM per channel across all available channels (1DPC) to avoid speed downclocking. With 4GB modules this yields modest capacity per node, but memory bandwidth per core is optimized. For memory-bound workloads, consider populating all slots with identical registered DIMMs to maintain uniform thermal and electrical characteristics under continuous load.

Verified Compatibility

This rigorously tested DDR3 RDIMM is compatible with Dell PowerEdge R720, HP DL380p Gen8, and Lenovo RD430 servers.

FAQ