General

Engineer's Note

Designed as a registered DDR4-3200 RDIMM with ECC, this module targets enterprise servers and workstations running memory-intensive workloads like virtualization and in-memory databases where data integrity is paramount. Its single-rank x4 organization and CL22 latency ensure reliable signal integrity and efficient memory controller loading in multi-DIMM configurations, maximizing throughput for 24/7 mission-critical operations.

Technical Specs & Insights

1. Providing a 32GB capacity per module, this RDIMM enables higher virtual machine density per server, directly lowering per-workload infrastructure costs in consolidated data centers.
2. ECC error correction actively scrubs single-bit faults, preserving transactional integrity for financial ledgers and customer databases around the clock.
3. The registered buffer stabilizes signal distribution across fully loaded memory channels, allowing seamless scale-up for in-memory databases and caching clusters.
4. 3200 MT/s throughput accelerates simultaneous data streams, shrinking query response times in virtualized and containerized environments under heavy user concurrencies.
5. Single Rank x4 organization using wide-bank devices strengthens per-access error coverage, delivering the high reliability demanded by always-on enterprise workloads without throttling bandwidth.

Why These Specs Matter

The M393A4G40BB3-CWE is a 32GB DDR4-3200 Registered DIMM with ECC, purpose-built for servers. Its four cornerstone attributes—ECC, registered buffering, 3200MT/s speed, and Single Rank x4 design—directly combat critical data-center pain points. In virtualized clusters, an uncorrected bit flip can silently corrupt hypervisor memory and crash dozens of VMs; on-die ECC instantly catches and corrects such errors, ensuring uninterrupted services. The register re-drives command and address signals, isolating the controller from heavy electrical loads so you can fully populate all channels with high-capacity modules without sacrificing stability—a must for in-memory databases that demand terabytes of reliable RAM. The 3200MT/s bandwidth slashes latency for real-time analytics and transactional systems, while the single-rank x4 architecture keeps bus traffic clean and signal integrity high, preventing speed degradation in dense server configurations. These features translate directly to maximum uptime, predictable performance under heavy virtualization, and faster query responses—empowering your infrastructure to scale fearlessly.

Endurance & Reliability

General Virtualization
For a typical hypervisor hosting 20–30 mixed VMs, populate with six to eight of these 32 GB RDIMMs per CPU to reach 192–256 GB. The ECC and registered design ensure stability under sustained memory pressure and allow live migration without data integrity concerns. Use balanced DIMMs across all memory channels to maintain uniform latency.

In-Memory Database
Deploy twelve or more modules per dual-socket server to achieve 384 GB–512 GB, keeping the working set entirely in RAM for Redis, Memcached, or SAP HANA. Single‑rank x4 configuration maximizes bandwidth at 3200 MT/s, critical for high transaction throughput. Distribute modules equally among channels to avoid bottlenecks during large in‑memory joins.

High‑Performance Computing
Scale node memory to 256 GB–1 TB using eight to sixteen modules per node, aligning capacity with per‑core requirements (e.g., 4 GB/core). The CL22 latency and 1.2 V power efficiency limit thermal overhead in dense clusters. Install identical RDIMMs in channel pairs to sustain peak memory bandwidth for MPI workloads and large‑scale simulations without throttling.

Verified Compatibility

This rigorously tested server memory is compatible with Dell PowerEdge R760, HPE ProLiant DL380 Gen11, and more.

FAQ