General

Engineer's Note

Designed for server platforms, this 16GB DDR4-3200 RDIMM with ECC and registered signaling delivers uncompromising data integrity and stability, making it ideal for memory-intensive workloads such as virtualization, in-memory databases, and enterprise computing. Its single-rank x4 organization optimizes memory bus loading for higher density deployments while the CL22 latency ensures consistent response under sustained, heavy access patterns.

Technical Specs & Insights

1. ECC protection silently detects and corrects single-bit errors, safeguarding transactional data integrity in always-on database servers.

2. Registered signal buffering stabilizes high-capacity memory arrays, essential for maintaining reliability across densely populated dual-socket platforms.

3. A generous sixteen-gigabyte capacity allows multiple virtual machines to reside comfortably in memory, reducing hypervisor swapping and preserving guest responsiveness.

4. High-speed 3200 megatransfers amplify throughput for in-memory analytics, accelerating real-time decision engines without bottlenecking modern server processors.

5. Single-rank x4 organization optimizes per-channel loading, enabling full memory speed even when populating all DIMM slots for maximum capacity in scale-out deployments.

Why These Specs Matter

The Samsung M393A2K40DB3-CWECQ is a 16GB DDR4-3200 Registered ECC DIMM engineered for enterprise servers. Its four key attributes—ECC error correction, registered clock buffering, a single‑rank x4 configuration, and 3200 MT/s speed—directly address the critical demands of modern data centers. In a virtualization cluster running dozens of virtual machines, bit flips caused by cosmic rays can corrupt in‑memory data and crash entire workloads. The built‑in ECC detects and corrects single‑bit errors, preserving data integrity and maximizing uptime. Meanwhile, the registered buffer isolates the chipset from electrical loading, allowing you to populate all memory channels with high‑capacity modules without sacrificing signal stability. This is vital for large‑scale database servers such as in‑memory SQL or Redis, where consistent low latency is non‑negotiable. The single‑rank x4 design further refines signal integrity, enabling reliable operation at the full 3200 MT/s bandwidth. That means faster query responses during peak transaction loads, directly boosting business productivity and user experience.

Endurance & Reliability

This is a server-grade DDR4-3200 ECC Registered DIMM (16GB). For capacity planning:

General Virtualization
Populate all memory channels with identical 16GB modules to enable balanced interleaving and NUMA symmetry. A typical dual-socket server with 12 identical modules (192GB total) comfortably hosts 40–60 moderate VMs while leaving headroom for failover and memory overhead. Avoid mixing capacities to maintain predictable latency across sockets.

In-Memory Database
Maximize capacity without sacrificing speed. Fill every DIMM slot with these 16GB RDIMMs—for example, 24 modules deliver 384GB on a 24-slot board. This provides the large, uniform footprint demanded by Redis, Memcached, or SAP HANA. The single-rank design helps sustain the full 3200 MT/s data rate even when all channels are populated.

High-Performance Computing
Memory bandwidth is paramount. Install one DIMM per channel to achieve peak throughput: 8 modules supply 128GB on an 8-channel platform, perfectly matched to HPC workloads. These single-rank 16GB RDIMMs frequently maintain higher clock rates than denser alternatives, benefiting floating‑point‑intensive MPI jobs and scientific simulations.

Verified Compatibility

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

FAQ