General

Engineer's Note

This RDIMM with ECC and a registered signal type is engineered for server platforms, delivering strong data integrity and stability critical for virtualization, in-memory databases, and enterprise workloads. Its dual-rank x8 organization improves memory bandwidth utilization, while the 3200 MT/s speed at CL22 ensures a solid balance of latency and throughput for sustained heavy-load operation.

Technical Specs & Insights

1. A generous capacity per module allows denser memory configurations in rack servers, supporting more virtual machines and larger in-memory database caches without hitting capacity ceilings.
2. The elevated data rate supplies the bandwidth essential for real-time analytics, AI inference, and heavily multi-threaded enterprise workloads without stalling processors.
3. Integrated ECC actively detects and corrects memory errors, delivering the rock-solid data integrity demanded by financial ledgers, hypervisors, and around-the-clock mission-critical services.
4. Registered signal architecture buffers commands and addresses, preserving signal integrity at high capacities so that multi-slot server boards can scale memory without sacrificing stability.
5. Dual Rank x8 organization employs rank interleaving to keep the channel saturated, sustaining consistent throughput under heavy virtualization consolidation and concurrent database operations.

Why These Specs Matter

The M393A2K43EB3-CWE is a DDR4-3200 Registered DIMM with ECC, engineered specifically for server workloads where uptime and data fidelity are non-negotiable. Its ECC actively corrects single-bit errors in real time—when a stray alpha particle strikes a memory cell in a virtualized cluster, your hypervisor remains stable and financial transactions never silently corrupt. The registered buffer reduces electrical load on the memory controller, so you can fully populate 16GB modules across all channels without signal degradation, vital for scaling an in-memory database like Redis to massive capacities. Dual-rank x8 organization leverages rank interleaving: while one rank executes a refresh cycle, the other serves read requests, effectively doubling random access throughput for low-latency analytics and hot datasets. Finally, operating at 3200MT/s with a low 1.2V voltage, it simultaneously pushes 25.6 GB/s per channel and trims power consumption—directly lowering cooling costs in dense server farms. These four characteristics translate directly to infrastructure that delivers consistent performance and uncompromised data integrity, keeping your mission-critical services available around the clock.

Endurance & Reliability

General Virtualization
Populate all available memory channels per CPU socket with these 16GB DDR4-3200 ECC RDIMMs to maximize both capacity and bandwidth. For a dual-socket server with eight channels each, installing eight modules per CPU yields 128 GB of balanced, low-latency memory, which efficiently supports dozens of virtual machines without NUMA bottlenecks.

In-Memory Database
Latency-sensitive in-memory databases benefit from dual-rank x8 modules operating at 3200 MT/s. Deploy these DIMMs in a fully symmetric configuration across all memory controllers—sixteen modules deliver 256 GB of high-throughput, error-correcting capacity ideal for real-time analytics or caching layers. Always populate identical DIMMs per channel to maintain uniform access times.

High-Performance Computing (HPC)
In compute-bound HPC nodes, memory bandwidth is paramount. Install eight of these registered ECC modules per socket in a balanced 1-DIMM-per-channel arrangement to achieve the full 3200 MT/s data rate. A 128 GB pool built from 16 GB dual-rank RDIMMs provides the capacity and sustained throughput required for large-scale simulations, CFD workloads, and parallel matrix operations.

Verified Compatibility

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

FAQ