General

Engineer's Note

Optimized for enterprise server platforms, this DDR4-2133 Registered DIMM with ECC ensures data integrity in virtualized environments, in-memory databases, and mission-critical workloads where silent data corruption is unacceptable. Its dual-rank x4 organization and CL15 latency strike an effective balance between high-density memory capacity and reliable command/address stability through the registered signal type, reducing electrical loading on the memory bus in multi-DIMM configurations.

Technical Specs & Insights

1. Error-correcting code protection proactively detects and fixes single-bit memory errors, preserving vital data integrity for always-on enterprise databases and financial processing.
2. Registered signal buffering stabilizes command and address paths, enabling fully populated server boards to run reliably without signal degradation under heavy load.
3. Dual Rank x4 organization interleaves memory bank access, sustaining high command throughput and consistent bandwidth that keeps virtual machine response smooth during consolidation peaks.
4. Generous per-module capacity allows denser memory configurations in a limited number of slots, directly raising virtual machine density and data center consolidation ratios.
5. This mainstream DDR4 frequency delivers ample sustained throughput for concurrent business workloads while maintaining the low power envelope that simplifies server cooling and reduces OpEx.

Why These Specs Matter

The Samsung M393A2G40DB0-CPB3Q is a server-grade Registered DIMM engineered for mission-critical enterprise environments. In a dense virtualization cluster, its Error Correcting Code (ECC) silently detects and corrects single-bit memory errors caused by cosmic rays or electrical noise—without ECC, a flipped bit in a hypervisor could corrupt multiple virtual machines or crash an entire node, turning routine operations into costly outages. The Registered signal buffer is equally vital: it re-drives address and command signals across high-density memory channels, allowing you to populate all 24 DIMM slots per server without signal degradation, which directly safeguards the dozens of virtual machines relying on that capacity. For in-memory databases like SAP HANA or Redis, the dual-rank x4 organization interleaves memory accesses across two internal ranks per module, substantially boosting bandwidth under concurrent reads and writes. This means a financial analytics query that scans billions of rows completes seconds faster, every time. Operating at 1.2V DDR4-2133 with CL15, it also minimizes thermal load inside your rack, so higher DIMM counts don’t force you to compromise on cooling or energy budgets. Together, these four properties—ECC integrity, registered stability, dual-rank throughput, and low-voltage efficiency—translate directly to fewer application hiccups, denser server consolidation, and predictable performance when every millisecond counts.

Endurance & Reliability

General Virtualization
For a typical hypervisor hosting multiple VMs, populate at least six to eight identical 16 GB RDIMMs across all memory channels to maximize bandwidth and leave room for growth. A balanced 96–128 GB configuration using these ECC registered modules ensures reliable memory overcommit and failover capabilities without excessive power draw.

In-Memory Database
In-memory analytics and caching platforms demand both capacity and data integrity; equip the server with a fully populated bank of these 16 GB ECC RDIMMs—often 256 GB or more—spread evenly across processors. The registered dual-rank x4 design reduces electrical loading, sustaining stable operation under sustained 100 % memory utilization.

HPC
High-performance computing clusters benefit from maximum memory bandwidth per node. Install one DIMM per channel (e.g., eight modules for a 128 GB pool) to avoid performance penalties of mixed ranks, while ECC protects long-running simulations from silent data corruption. This 2133 MT/s registered DDR4 provides a cost-effective, densely ranked foundation for throughput-sensitive parallel jobs.

Verified Compatibility

Thoroughly tested for server compatibility: works with Dell PowerEdge R740, HPE ProLiant DL380 Gen10, Lenovo ThinkSystem SR650, and more.

FAQ