General

Engineer's Note

Designed for server platforms, this DDR4-2666 Registered DIMM with ECC is ideally suited for virtualization, in-memory databases, and mission-critical enterprise workloads. Its dual-rank x8 configuration enhances memory bandwidth efficiency, while the registered signal type and ECC ensure robust data integrity and system stability under sustained heavy loads.

Technical Specs & Insights

1. ECC protection silently detects and corrects single-bit errors, ensuring long-running virtualized databases and financial ledgers never suffer silent data corruption.
2. Registered clock buffering preserves signal integrity across fully loaded channels, making it possible to scale multi-terabyte memory capacities without risking node crashes.
3. Sixteen gigabytes per module delivers the density needed to pack more active virtual machines onto a single host, directly improving consolidation ratios in private clouds.
4. Dual-rank x8 organization increases bank-level parallelism, allowing concurrent data requests from many CPU cores to be serviced without choking memory bandwidth.
5. A 2666 MT/s transfer rate supplies consistent throughput to modern dual-socket servers, preventing memory-induced stalls during high-concurrency analytics or OLTP workloads.

Why These Specs Matter

In a data center, the Samsung M393A2K43CB2-CTD6Y 16GB DDR4-2666 RDIMM isn’t just a component—it’s your silent insurance policy against hidden failures and performance bottlenecks. Its ECC technology continuously detects and corrects single-bit memory errors caused by cosmic radiation or electrical noise, meaning your virtualized cluster won’t suffer a mysterious VM crash at 3 a.m. because a flipped bit corrupted a critical transaction. The registered signal buffer stabilizes the command bus under heavy loads, so when you populate all 24 DIMM slots in a dual-socket server to run dozens of containers or a large-scale in-memory database like SAP HANA, the CPU doesn’t waver with electrical strain—your query latency stays predictable. Meanwhile, the dual-rank x8 organization interleaves memory access across two internal banks per module. In practice, this translates directly to higher sustained bandwidth for your Redis cache farm or PostgreSQL buffer pool, allowing you to serve more concurrent users without adding servers. Operating at just 1.2V, it also trims aggregate power draw across a row of racks, lowering your cooling costs while maintaining the rock‑solid 2666MT/s throughput your heavy‑workload applications demand.

Endurance & Reliability

General Virtualization
Registered ECC DDR4-2666 modules are the foundation of stable virtualization hosts. For a general-purpose hypervisor running multiple VMs, install four identical 16GB RDIMMs (64GB total) across balanced memory channels to secure both capacity and dual-channel throughput. Always populate at least one DIMM per channel and keep configurations symmetrical to prevent performance penalties on registered platforms.

In-Memory Database
In-memory databases demand absolute data integrity and generous capacity. Deploy six to eight of these 16GB dual-rank RDIMMs (96–128GB) across all available channels to hold large datasets entirely in RAM. The ECC and registered buffer of the DDR4-2666 specification effectively eliminate single-bit errors and signal degradation, keeping response times low under constant, heavy write loads.

High Performance Computing (HPC)
HPC clusters prioritize bandwidth and consistent latency over pure capacity per node. Fully populate each memory channel with these 16GB dual-rank x8 modules—for example, eight modules for 128GB on an 8-channel server—to maximize rank interleaving and sustain high floating-point throughput. Match the DIMM count exactly to the platform’s memory controller design, avoiding any empty channels that would starve the CPU of aggregate bandwidth.

Verified Compatibility

Rigorously tested registered ECC DDR4 module for Dell PowerEdge R740/R750, HPE DL380 Gen10, Lenovo SR650, and Supermicro servers.

FAQ