General

Engineer's Note

This DDR4-3200 Registered ECC RDIMM is engineered for server platforms, ideally suited for memory-intensive workloads such as virtualization and in-memory databases where data integrity is non-negotiable. Its single-rank x4 configuration and 1.2 V operating voltage deliver a strong balance of signal integrity and power efficiency, while the registered signal type ensures stable operation across high-density memory configurations.

Technical Specs & Insights

1. Registered signal type buffers command and address lines, enabling stable operation with multiple DIMMs per channel and maximizing memory capacity in heavily virtualized servers.
2. ECC error correction identifies and fixes single-bit errors in real time, preventing silent data corruption that could crash financial databases or long-duration scientific simulations.
3. 3200 MT/s data rate delivers the bandwidth needed to accelerate in-memory caching and real-time analytics, keeping latency low even as VM density increases.
4. Single Rank x4 organization minimizes bus loading, allowing fully populated memory slots to sustain high clock speeds without compromising signal integrity in dense rack deployments.
5. 1.2V operating voltage cuts energy draw per module, reducing cooling overhead and enabling higher rack-level power efficiency under continuous 24/7 workloads.

Why These Specs Matter

The Samsung M393A2K40DB3-CWEBY is a 16GB DDR4-3200 Registered DIMM engineered for enterprise servers, and four of its characteristics translate directly into operational resilience where it matters most. First, ECC actively detects and corrects single-bit memory errors, a non-negotiable safeguard when a silent bit-flip in a virtualized cluster could corrupt a financial transaction or abruptly crash dozens of tenants. Second, the Registered clock driver stabilizes address and command signaling, empowering you to populate all channels without signal degradation—this maximizes VM density and keeps large in-memory datasets reliably accessible. Third, the 3200 MT/s interface combined with Single Rank x4 organization delivers up to 25.6 GB/s bandwidth while keeping command latency low; in an in-memory database like Redis or SAP HANA, this accelerates query responses and streamlines real-time analytics under heavy concurrent loads. Finally, the 1.2V operating voltage reduces energy consumption per module, cutting cooling overhead in densely packed racks and lowering total cost of ownership across your fleet. These features are not mere specifications—they are your assurance of data integrity, unimpeded scalability, and predictable performance in mission-critical workloads.

Endurance & Reliability

Server Memory (RDIMM ECC DDR4-3200)
This 16GB DDR4-3200 registered ECC module is purpose-built for enterprise servers, offering data integrity and signal stability for multi-DIMM configurations.

General Virtualization
Populate at least four modules (64GB total) across balanced memory channels to avoid NUMA bottlenecks. For moderate virtual machine density, a 6×16GB (96GB) setup provides sufficient headroom for hypervisor overhead and guest memory overcommit without excessive cost.

In-Memory Database
Aim for the maximum supported capacity per socket by fully populating all channels—for example, 8×16GB (128GB) or 12×16GB (192GB)—to keep entire datasets in DRAM. Favor single-rank x4 DIMMs like this one to sustain lower latency and higher clock speeds when all slots are occupied.

High-Performance Computing (HPC)
Balance bandwidth and capacity by installing one DIMM per channel (e.g., 8×16GB) to achieve full memory interleaving and peak throughput. For memory-bound simulation workloads, scaling to 16×16GB (256GB) across dual-socket nodes ensures large working sets fit into low-latency local memory, minimizing I/O wait.

Verified Compatibility

Validated for servers. Compatible with Dell PowerEdge R750, HPE ProLiant DL380 Gen10 Plus, Lenovo ThinkSystem SR650 V2.

FAQ