General

Engineer's Note

Designed for server platforms, this DDR4-3200 Registered ECC RDIMM with Single Rank x8 configuration and CL22 latency ensures robust data integrity and signal stability under demanding workloads. It is ideally suited for virtualization, in-memory databases, and enterprise applications where reliable, high-capacity memory with hardware error correction is critical.

Technical Specs & Insights

1. ECC error correction silently detects and fixes single-bit memory faults, preserving transactional integrity in financial databases and preventing hypervisor crashes in always-on virtualization clusters.
2. Registered signal type buffers command and address lines, enabling fully loaded server motherboards to run large memory populations without signal skew, a must for dense rack-scale deployments.
3. DDR4-3200 throughput supplies up to 25.6 GB/s per channel, dramatically reducing data delivery latency for in-memory caching and real-time analytics engines under concurrent user load.
4. Single Rank x8 organization minimizes bus loading, allowing the memory controller to sustain peak transfer rates across multiple DIMMs and simplifying qualification for 24/7 mission-critical host configurations.
5. 8 GB capacity offers a granular bill-of-materials option for cloud-native microservices nodes, keeping per-VM memory allocation lean while maintaining full ECC protection for bare-metal container platforms.

Why These Specs Matter

In the data center, the M393A1K43DB1-CWE is engineered specifically for server workloads where every bit and every nanosecond counts. This DDR4-3200 RDIMM features ECC error correction, silently detecting and correcting single-bit memory errors caused by cosmic radiation or electrical interference. In a dense virtualization cluster hosting dozens of VMs, a single uncorrected bit flip can corrupt a guest operating system, trigger an unexplained reboot, or propagate corrupted data into a database. ECC acts as an insurance policy against such silent data corruption, directly protecting uptime and trust.

Its Registered signal type buffers the command and address lines, stabilizing the heavy electrical loads found in fully populated server boards. When you populate all 24 DIMM slots in a rack server for an in-memory database like SAP HANA or Redis, registered buffering prevents signal degradation, ensuring consistent 3200 MT/s throughput under full load. The single-rank x8 organization further optimizes interleaving and reduces latency within a memory channel, allowing the CPU to fetch data faster from parallel banks. Combined with JEDEC-standard 1.2 V efficiency and a 288-pin footprint, the module delivers the reliability, bandwidth scalability, and power-conscious design that your virtualized infrastructure and business-critical OLTP workloads demand—because in a server room, resilience isnt a luxury, its the foundation.

Endurance & Reliability

General Virtualization
Deploy this RDIMM in balanced sets to maximize memory channels—typically six or eight identical modules per socket to populate all channels symmetrically. A common starting point is 64 GB (8 x 8 GB) for light to medium VM density, scaling to 128 GB or more for heavy consolidation. Always match DIMM ranks across channels to maintain consistent latency and avoid NUMA imbalances.

In-Memory Database
For latency-sensitive workloads like Redis or SAP HANA, leverage the module’s single-rank x8 design to keep command-to-data timing tight. Configure with at least four modules per CPU to sustain high bandwidth under concurrent access, and plan for headroom above the working dataset size—often 128 GB to 512 GB total. ECC and registered signaling guard against silent data corruption during sustained writes.

High-Performance Computing
Balance capacity against peak memory bandwidth by populating one DIMM per channel (e.g., eight identical 8 GB sticks across eight channels) to saturate the memory controller. This 8 GB RDIMM suits bandwidth-bound HPC jobs like CFD or molecular dynamics where per-core memory requirements are modest. For capacity-heavy simulation codes, double the module count while keeping population uniform to preserve interleaving and minimize channel contention.

Verified Compatibility

Server-tested and proven compatible with Dell PowerEdge R760, HPE ProLiant DL380 Gen11, Lenovo ThinkSystem SR650 V3.

FAQ