General

Engineer's Note

Designed for server-class platforms, this 16GB DDR4-3200 Registered ECC module provides strong data integrity and system stability for virtualized environments and in-memory databases. Its single-rank x8 organization with CL22 latency and registered signaling ensures reliable operation at full speed in dense, multi-DIMM configurations where signal integrity and error correction are critical.

Technical Specs & Insights

1. ECC protection silently corrects single-bit memory errors, preserving data integrity in virtualization and database servers where uptime and accuracy are non-negotiable.

2. Registered signal type buffers command and address lines, allowing multiple DIMMs per channel to operate reliably under the heavy load of dense cloud and enterprise workloads.

3. A capacity of sixteen gigabytes per module delivers the granular scaling needed to right-size memory for container hosts and mid-tier virtualized applications without wasting resources.

4. DDR4-3200 speed raises the peak throughput ceiling, accelerating in-memory analytics and reducing query latency under concurrent access patterns.

5. Single Rank x8 organization ensures lower electrical loading on the memory bus, improving signal integrity and energy efficiency in fully populated rack servers.

Why These Specs Matter

As a server-grade RDIMM, the M391A2G43BB2-CWE integrates four critical attributes that directly address the demands of modern data centers. First, its ECC technology continuously detects and corrects single-bit memory errors, preventing silent data corruption that could lead to incorrect financial calculations or application crashes in virtualized clusters. Second, the registered design employs a command/address buffer, stabilizing signal integrity when populating high-density memory configurations—meaning you can confidently scale to terabytes of RAM for large-scale virtualization without compromising reliability. Third, the 3200MT/s speed and Single Rank x8 organization deliver a balanced combination of high bandwidth and low latency; in in-memory databases like SAP HANA or Redis, this accelerates real-time analytics and transaction processing, where memory access delays directly impact business outcomes. Fourth, operating at an ultra-efficient 1.2V, it reduces power consumption and thermal stress in densely packed server racks, lowering both energy costs and cooling requirements. Together, these features ensure maximum uptime, scalability, and performance efficiency for mission-critical enterprise workloads.

Endurance & Reliability

This 16GB DDR4-3200 ECC Registered DIMM (M391A2G43BB2-CWE) is intended for server platforms. Capacity planning guidance follows.

General Virtualization
Install one module in every memory channel to achieve symmetric interleaving. A dual‑socket machine with eight channels per CPU, fully populated, delivers 256GB at full 3200MT/s. This supports substantial VM density, prevents bottlenecks, and ensures data integrity through ECC.

In-Memory Database
For highest capacity, place two DIMMs per channel, understanding speed may reduce to 2933MT/s. When latency matters more, use one DIMM per channel at native 3200MT/s and scale across additional nodes. Always employ identical single‑rank x8 modules to maintain stable signal timing.

High-Performance Computing
Populate all channels with one single‑rank 16GB module to run at maximum 3200MT/s without performance penalties. The resulting 256GB of low‑latency, ECC memory in a dual‑socket system accelerates simulation, computational fluid dynamics, and large‑scale analytics.

Verified Compatibility

Rigorously tested server memory, compatible with Dell PowerEdge R750, HPE ProLiant DL380 Gen10 Plus, Lenovo ThinkSystem SR650 V2, and more.

FAQ