General

Engineer's Note

This Dual Rank x8 Registered ECC DDR4-2666 RDIMM is engineered for server platforms, where its Registered signal type ensures stable operation in high-density memory configurations and ECC provides critical single-bit error correction for data integrity. Its combination of 1.2V low-power operation, CL19 latency, and dual-rank interleaving delivers the reliable throughput required for virtualization, in-memory databases, and enterprise workloads that cannot tolerate data corruption.

Technical Specs & Insights

1. ECC protection actively detects and corrects single-bit errors, safeguarding transactional databases from silent data corruption and minimizing unexpected server downtime.
2. Registered signal buffering stabilizes command and address lines under heavy DIMM loading, enabling dense rack configurations to maximize total system memory without signal integrity loss.
3. The 16GB capacity per stick strikes an ideal density for virtualization hosts, allowing more virtual machines per rack unit while balancing cost and memory footprint.
4. Dual Rank x8 organization employs rank interleaving to keep data pipelines saturated, delivering consistent throughput for concurrent enterprise analytics and large in-memory workloads.
5. DDR4-2666 speed translates to a peak bandwidth of PC4-21300, ensuring low-latency data movement for content delivery and real-time caching in data-center environments.

Why These Specs Matter

Designed for the relentless demands of modern data centers, the Samsung M393A2K43DB2-CTD6Y is a 16GB DDR4-2666 Registered DIMM that transforms raw specifications into tangible business resilience. Its Error-Correcting Code (ECC) is your silent guardian against silent data corruption. In a virtualized cluster running dozens of VMs, a single cosmic-ray-induced bit flip in memory can crash a critical application or silently corrupt a database record. ECC detects and corrects these errors in real time, meaning your financial transactions stay accurate and your hypervisor remains stable without costly, unscheduled downtime.

The registered signal type, paired with a dual-rank x8 organization, directly addresses the pain of scaling. Every added DIMM channel loads the memory bus, threatening signal integrity at high capacity. The onboard register buffers the command and address signals, allowing your server to populate all 24 slots of a dual-socket motherboard for a massive 384GB pool without compromising stability. This unlocks peak performance for memory-hungry workloads like an in-memory Redis or SAP HANA database. Here, dual-rank interleaving hides refresh cycles and delivers higher sustained bandwidth, ensuring real-time analytics queries return results with sub-millisecond latency even under heavy concurrency. This isn’t just memory; it’s the foundation for uncompromising uptime and velocity in your mission-critical infrastructure.

Endurance & Reliability

General Virtualization
For a virtualized host running multiple VMs, density is key. Deploy this 16GB RDIMM in a balanced configuration—fill half the memory channels (e.g., six modules for a dual-socket system with six channels per CPU) to provide 96GB per host, leaving room for future expansion. Registered ECC memory ensures the stability required when dozens of virtual machines contend for resources, preventing silent data corruption.

In-Memory Database
Low-latency in-memory databases like Redis or SAP HANA demand both capacity and data integrity. Populate all available memory channels with these dual-rank 16GB RDIMMs to maximize bandwidth and achieve symmetrical performance—a fully populated 12-DIMM dual-socket server delivers 192GB, suitable for moderate in-memory datasets. The ECC and registered signaling are non-negotiable for transactional workloads where memory errors could corrupt critical data.

High-Performance Computing
HPC clusters benefit from the balance of capacity and bandwidth these modules provide. Configure nodes with a one-DIMM-per-channel population (typically 8 or 12 modules) to sustain the peak DDR4-2666 speed without dropping to a lower rank frequency. The dual-rank x8 design delivers strong throughput for MPI-based simulations and computational fluid dynamics, while registered ECC preserves result fidelity during multi-day job runs.

Verified Compatibility

Rigorously tested, this Samsung 16GB DDR4 ECC RDIMM is compatible with Dell PowerEdge R740, HPE DL380 Gen10, Lenovo SR650.

FAQ