General

Engineer's Note

This is a server-class DDR4-3200 Registered DIMM, ideally suited for enterprise platforms running virtualization, in-memory databases, and workloads demanding uncompromised data integrity. Its dual-rank x4 architecture and ECC Registered signaling deliver enhanced signal stability and error correction, maintaining reliable 3200MHz operation at a low 1.2V.

Technical Specs & Insights

1. A dense 32GB capacity per module maximizes memory footprint per server node, accelerating in-memory databases and high-density virtualization.
2. The 3200MT/s data rate delivers the sustained bandwidth necessary to feed modern multi-core server CPUs, reducing bottlenecks in data-intensive workloads.
3. Integrated ECC corrects single-bit errors and detects multi-bit faults, preserving data integrity for financial transactions and long-running scientific computations.
4. The registered signal architecture stabilizes high-capacity memory arrays, enabling dependable operation in multi-DIMM server platforms where signal integrity is paramount.
5. Dual-rank x4 organization interleaves memory accesses to fully utilize the memory bus, boosting throughput for simultaneous VM and container workloads.

Why These Specs Matter

The Samsung M393A4K40BB2-CWE is a 32GB DDR4-3200 Registered DIMM built for enterprise servers, where unplanned downtime or data corruption carries real financial consequences. Its ECC technology actively detects and corrects single-bit memory errors, which is critical when a flipped bit in an in-memory database like SAP HANA could silently corrupt a financial transaction. The registered signal buffer allows you to populate all memory channels with high-density modules while maintaining clean command-address signaling, so a virtualization cluster running dozens of VMs stays stable under heavy load and you avoid random host crashes that wake your team at 3 a.m. The dual-rank x4 organization and 3200 MT/s bandwidth feed multi-core Xeon processors predictable throughput, reducing latency spikes when multiple VMs compete for memory access during simultaneous backup windows or large-scale analytics queries. Operating at 1.2V, this module also helps keep thermal load in check across densely packed 2U nodes, which extends component lifespan and lowers cooling costs over the server fleet’s life.

Endurance & Reliability

The 32GB DDR4-3200 RDIMM (PC4-25600, dual-rank x4, ECC registered, CL22) is a server-class memory module. Below are capacity planning recommendations for common enterprise workloads using this DIMM.

General Virtualization
For a dual-socket server with eight memory channels per CPU, populate one DIMM per channel (16 modules total) to deliver a balanced 512 GB. This configuration maintains the full 3200 MT/s speed, avoids NUMA imbalance, and comfortably supports dozens of mixed-application virtual machines without over-provisioning.

In-Memory Database
Capacity and data integrity are paramount. Maximize memory by installing two 32GB RDIMMs per channel — this can yield 1 TB on a 16-channel platform. Expect a slight speed drop to 2933 MHz due to dual-rank loading, but the increased footprint keeps entire datasets resident in memory, minimizing storage I/O.

High-Performance Computing
HPC codes demand peak memory bandwidth. To avoid signal degradation, limit each channel to a single 32 GB RDIMM running at 3200 MT/s. A dual-socket server with 16 channels thus provides 512 GB of high-speed, low-latency ECC memory, ideal for simulation meshes and parallel modeling where every clock cycle counts.

Verified Compatibility

Server-grade, rigorously tested, compatible with Dell PowerEdge R750, HPE ProLiant DL380 Gen10 Plus, Lenovo ThinkSystem SR650 V2.

FAQ