General

Engineer's Note

Designed for server environments, this 8GB DDR4-2133 RDIMM with ECC and registered signal buffering ensures data integrity and system stability, making it ideal for virtualization, in-memory databases, and mission-critical enterprise workloads where reliability is paramount. Its dual-rank x8 configuration and CL15 latency enhance memory bandwidth utilization in multi-DIMM channels, delivering consistent performance under heavy concurrent access.

Technical Specs & Insights

1. A moderate module capacity lets operators fully populate memory channels without wasted resources, ideal for scaling out lightweight virtualized services cost-effectively.
2. On-the-fly ECC correction prevents single-bit errors from compromising data integrity, directly protecting financial ledgers or inventory databases from silent corruption.
3. Registered clock buffering strengthens signal control across densely packed DIMM slots, keeping large-memory multi-socket platforms stable under nonstop operation.
4. Dual-rank interleaving raises sustained bandwidth by overlapping internal bank accesses, helping simultaneous analytical queries complete without queuing delays.
5. A conservative CAS latency delivers fast first-word access, sharpening response times in latency-bound ERP and CRM transaction processing.

Why These Specs Matter

The Samsung M393A1G43EB1-CPB is an 8GB DDR4-2133 RDIMM built for server workloads. Its ECC, registered buffer, dual-rank x8 architecture, and 1.2V operation solve critical data center issues. First, ECC instantly corrects single-bit errors. In a virtualized cluster, a silent bit-flip can corrupt a hypervisor and down multiple VMs; ECC eliminates this risk, preserving uptime. Second, the registered interface buffers signals, enabling stable high-density memory configurations. This matters for in-memory databases like Redis, where populating all slots with reliable signal integrity prevents crashes under heavy query traffic. Third, dual rank interleaves data across two ranks, boosting bandwidth and lowering latency. This means a virtualized SQL Server handles more concurrent transactions and accelerates analytics. Finally, the 1.2V power envelope reduces energy draw, preventing costly thermal buildup in dense server racks. These features directly translate to greater reliability, faster database performance, and lower operational expense for your infrastructure.

Endurance & Reliability

Based on the specifications (DDR4-2133, ECC, Registered, RDIMM, 288-pin, 1.2V), this is a server memory module. Below is the capacity planning guidance for typical server workloads.

General Virtualization
Virtualized hosts rely on ample memory per VM. With 8GB RDIMMs, populate all available channels evenly to maximize bandwidth. A typical dual-socket server benefits from 12–16 of these modules (96–128GB total) to comfortably run 20–30 lightweight VMs while leaving headroom for hypervisor overhead.

In-Memory Database
In-memory databases require both capacity and data integrity. ECC Registered DIMMs are essential to prevent silent corruption. Deploy a minimum of 16 modules (128GB) across all memory channels to sustain large datasets entirely in RAM, and populate identical dual‑rank x8 DIMMs for consistent latency under heavy read/write loads.

HPC (High Performance Computing)
HPC clusters demand balanced throughput. Install one module per channel using identical 8GB RDIMMs to achieve maximum bandwidth per core. For a dual‑processor node, fully loading 16–24 DIMM slots delivers over 128GB of reliable, low‑latency ECC memory, critical for large-scale simulations and parallel processing.

Verified Compatibility

This server memory is rigorously tested and compatible with Dell PowerEdge R730, HPE ProLiant DL380 Gen9, and Lenovo ThinkSystem SR650.

FAQ