General

Engineer's Note

This is a server-class DDR4-3200 Registered ECC RDIMM, purpose-built for enterprise platforms running memory-intensive workloads such as virtualization, in-memory databases, and mission-critical applications where data integrity is non-negotiable. Its dual-rank x4 organization with CL22 latency and registered signaling enhances signal stability and interleaving efficiency in dense multi-DIMM configurations, while ECC provides robust single-bit error correction to prevent silent data corruption.

Technical Specs & Insights

1. A dense per-module capacity lowers the total DIMM count needed for large memory footprints, improving airflow and reliability in densely packed server chassis.
2. Hardware-level error correction eliminates the risk of silent bit flips, preserving data accuracy for mission-critical databases and long-running computational jobs.
3. Registered logic re-drives command and address signals, maintaining electrical integrity when all channels are fully populated with high-capacity modules for maximum scalability.
4. The elevated transfer rate feeds high-core-count CPUs with the memory bandwidth required to keep virtualized environments and in-memory analytics running efficiently.
5. Dual-rank interleaving overlaps internal bank accesses, sustaining peak throughput under the concurrent demands of multi-tenant cloud workloads.

Why These Specs Matter

Engineered for enterprise servers and data centers, the M393A4K40EB3-CWE 32GB DDR4-3200 RDIMM transforms how mission-critical workloads perform. Its four defining characteristics directly address the real-world pain points of IT infrastructure managers. The Registered design with an onboard clock driver stabilizes signal integrity when populating all memory channels, allowing dense virtualization clusters to host more virtual machines without boot failures or random crashes. ECC error correction then silently detects and corrects single-bit memory errors, preventing silent data corruption in financial transaction logs or customer databases—a single uncorrected error can cost hours of forensic investigation. The dual-rank x4 organization doubles the bank groups accessible to the memory controller, extracting higher sustained bandwidth through interleaving; this keeps in-memory databases like Redis or SAP HANA responsive under heavy concurrent queries. Finally, the 3200MT/s speed with CL22 latency feeds modern multi-core Xeon processors fast enough to saturate their data pathways, reducing transaction latency in virtualized SQL clusters. For your deployment, this means uncompromised data integrity, scalable capacity, and the predictable low latency that business-critical analytics demand.

Endurance & Reliability

General Virtualization
For a typical hypervisor hosting multiple VMs, population balance is key. Install six or eight identical 32 GB RDIMMs across the server’s memory channels (e.g., one DIMM per channel in a dual-socket system) to maximize bandwidth while leaving room for growth. This yields 192–256 GB of total capacity, comfortably supporting 20–40 moderate VMs without overcommitting memory.

In-Memory Database
Low latency and high capacity are critical for datasets held entirely in RAM. Populate all memory channels with at least one 32 GB dual-rank DIMM each; dual rank x4 modules improve bank-level parallelism for transactional workloads. Target a minimum of 256 GB (8 × 32 GB) per socket to cache large tables and indexes, scaling to 512 GB or 1 TB as data volumes dictate.

High-Performance Computing (HPC)
HPC codes thrive on memory bandwidth. Configure a balanced DIMM-per-channel layout using matched sets of registered 32 GB modules to saturate all memory channels. For dual-socket nodes, 16 × 32 GB (512 GB total) provides substantial capacity for large simulations while maintaining 3200 MT/s speed, avoiding performance penalties from mixed ranks or unbalanced configurations.

Verified Compatibility

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

FAQ