General

Engineer's Note

This 64GB DDR4-2133 Registered ECC RDIMM is engineered for enterprise-class servers and virtualization platforms, where its quad-rank x4 configuration maximizes memory density and ECC protection ensures data integrity in critical workloads such as in-memory databases and large-scale hypervisor deployments. The registered signal topology and CL15 latency deliver robust multi-DIMM per channel stability, making it the ideal choice for sustained, mission-command operations that demand uncompromising reliability.

Technical Specs & Insights

1. Massive module capacity allows dense server consolidation, satisfying the voracious memory appetite of hundreds of containers and VMs simultaneously.
2. On-die ECC corrects single-bit errors in real time, preserving data integrity for mission-critical databases and financial transactions.
3. Registering the command and address buses sharpens signal integrity, enabling stable operation across fully loaded multi-DIMM server channels.
4. Quad Rank x4 organization keeps all memory bank groups busy, maximizing the data pipeline and sustaining throughput during heavy parallel workloads.
5. DDR4 technology delivers the sweet spot of bandwidth per watt, essential for power-conscious hyperscale data centers running around the clock.

Why These Specs Matter

For a virtualization cluster or an in-memory database engine, the Samsung M393A8K40B21-CRB 64GB DDR4-2133 RDIMM is not just a memory module—it directly defines whether your services stay online. Its ECC technology silently corrects single-bit errors in real time, preventing silent data corruption that could crash fleets of virtual machines or introduce financial inaccuracies into a live Redis or SAP HANA dataset. Registered command-address buffering then keeps signals clean even when all eight DIMM slots are populated, meaning you can confidently scale past half a terabyte of stable memory per host without signal roll-off. The quad rank x4 organization packs that 64GB into a single slot while rank interleaving boosts effective bandwidth for concurrent queries, shrinking response times for hundreds of analytics users. Operating at just 1.2V, the module also trims power and cooling overhead across the rack. For IT teams, these four capabilities transform a fragile memory subsystem into a fault-resilient backbone where neither a stray cosmic ray nor peak load causes downtime.

Endurance & Reliability

General Virtualization
This 64GB DDR4-2133 Registered ECC RDIMM is ideal for dense virtualization hosts. Deploy modules in multiples of four or eight across memory channels to maximize bandwidth and maintain balanced NUMA topology. A common configuration uses eight of these DIMMs for 512GB total, comfortably supporting dozens of mixed-workload VMs while ensuring data integrity through ECC.

In-Memory Database
In-memory databases like Redis or SAP HANA demand high capacity and rock‑solid reliability. Populate all memory channels with identical 64GB RDIMMs, aiming for a fully balanced configuration to avoid performance penalties. The registered ECC design protects against single‑bit errors, which is critical for transactional data, while quad‑rank construction allows large footprints of 1TB or more per server.

High-Performance Computing
HPC clusters favor memory bandwidth over raw capacity, yet large problem sets require substantial per‑node memory. Install six or eight modules per socket to saturate all DDR4 channels, enabling the highest aggregate throughput. The 2133MHz speed, combined with CL15 latency and registered signaling, delivers stable, predictable performance for tightly coupled parallel simulations and large‑scale data analysis.

Verified Compatibility

Rigorously tested and validated for servers like Dell PowerEdge R750, HPE ProLiant DL380 Gen10, Lenovo ThinkSystem SR650.

FAQ