General

Engineer's Note

This Samsung M393A2K40DB2-CWE is a 16GB DDR4-3200 RDIMM engineered for enterprise servers and workstations, where its Registered signal architecture and ECC ensure rock-solid signal integrity and data protection under heavy memory loads, making it ideal for memory-intensive virtualization and in-memory databases. The single-rank x4 configuration with CL22 latency optimizes bandwidth and bank-level parallelism on high-density platforms, delivering consistent throughput with minimal command timing overhead.

Technical Specs & Insights

1. 16GB capacity per module provides ample headroom for dense virtual machine consolidation, allowing each host to pack more workloads without sacrificing memory headroom.
2. 3200MT/s data rate delivers the high throughput that in-memory databases and real-time analytics rely on to reduce query latency under heavy concurrency.
3. ECC protection eliminates single-bit errors silently corrupting financial or scientific computations, safeguarding data integrity in mission-critical deployments.
4. Registered signal type stabilizes command and address lines across heavily populated server boards, making it possible to scale to multi-terabyte total memory without sacrificing reliability.
5. Single Rank x4 organization strikes an optimal balance between bandwidth efficiency and bank-level parallelism, keeping memory channels saturated during large-scale hypervisor operations.

Why These Specs Matter

The M393A2K40DB2-CWE is a server-grade DDR4-3200 registered DIMM purpose-built to neutralize the hidden threats that undermine enterprise uptime and performance. In a virtualized cluster, silent data corruption from a stray particle can flip a critical bit without a trace — the on-die ECC corrects single-bit errors inline, keeping your hypervisors and guest VMs clean from transactional anomalies. Meanwhile, the registered clock driver buffers command and address signals, enabling rock-solid signal integrity even when all memory channels are fully populated. For an in-memory database like SAP HANA, this means you can confidently deploy multiple 16GB modules per channel while sustaining the full 3200MT/s bandwidth demanded by real-time analytics. The single-rank x4 organization further accelerates large sequential block transfers, reducing access latency for data-heavy queries. Finally, the 1.2V operating voltage dramatically cuts power draw and cooling overhead across a rack of servers, directly lowering total cost of ownership. It’s a long-term investment in data integrity and workload acceleration.

Endurance & Reliability

General Virtualization
Equip each dual-socket server with eight 16GB DDR4-3200 RDIMMs (128 GB total), installing one DIMM per channel to deliver balanced bandwidth for moderate VM densities. This configuration leaves half the memory slots free, allowing non-disruptive expansion to 256 GB as workloads grow without replacing existing modules.

In-Memory Database
For latency-critical databases that demand full datasets in RAM, fully populate the server with 16 or more of these 16GB RDIMMs to reach 256–512 GB. The single-rank x4 design minimizes bus loading, helping maintain 3200 MT/s even at two DIMMs per channel—verify platform support for 2DPC at full speed to avoid unexpected frequency downgrades.

High-Performance Computing
Opt for one DIMM per channel (typically 12–16 modules, providing 192–256 GB) to sustain the full DDR4-3200 bandwidth that throughput-bound HPC applications require. When per-node memory falls short, scale horizontally across additional nodes rather than sacrificing transfer rates by overloading channels and risking a drop to 2933 MT/s.

Verified Compatibility

Rigorously tested, compatible with servers: Dell PowerEdge R760, HPE ProLiant DL380 Gen11, Lenovo ThinkSystem SR650 V3.

FAQ