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| Product Type | Memory Module |
|---|---|
| Compliance Standards | |
| Memory Capacity | 16 GB |
| Memory Technology | DDR4 |
| Product Voltage | 1.2 V |
| RAM Speed | 3200 MHz |
| RAM Standard | DDR4-3200/PC4-25600 |
| Error Identifying | ECC |
| Signal Type | Registered |
| Column Access Strobe (CAS) | CL22 |
| Rank | Single Rank x4 |
| Quantity of Pins | 288-pin |
| RAM Genre | RDIMM |
This 16GB DDR4-3200 RDIMM with ECC and registered signaling is purpose-built for server platforms running memory-intensive workloads like virtualization, in-memory databases, and mission-critical enterprise applications. Its single-rank x4 configuration improves signal integrity and enables higher memory bandwidth in dense multi-DIMM configurations, while ECC ensures data integrity by detecting and correcting single-bit errors in real time.
1. Transparent error correction safeguards transactional data integrity, silently preventing bit-flip induced crashes in mission-critical databases.
2. Registered buffer isolates electrical loads for reliable operation in multi-DIMM servers, critical for sustaining memory bandwidth under full slot population.
3. Optimal module density enables IT to scale total memory footprint efficiently per node, supporting more concurrent virtual machines.
4. Boosted data rate reduces latency for real-time analytics, accelerating in-memory processing in virtualized workloads.
5. Single rank with x4 DRAM drives consistent command bus timing, improving signal integrity and enabling higher bandwidth efficiency in balanced server configurations.
When you are running a virtualized cluster or an in-memory database, memory errors are not just an inconvenience—they are a direct threat to business continuity. The Samsung M393A2K40DB3-CWEGQ is an RDIMM engineered precisely for these mission-critical workloads. Its ECC technology continuously detects and corrects single-bit flips caused by background radiation, preventing silent data corruption that could crash a hypervisor hosting dozens of virtual machines or quietly poison financial transactions in a Redis cluster. The registered signal type plays an equally vital role: by buffering command and address lines, it stabilizes electrical loading on dense server boards. This means you can fully populate all memory channels with confidence that your in-memory database will sustain peak 3200 MT/s throughput under heavy concurrent queries without signal degradation triggering unexplained server lockups. The single-rank x4 organization at 3200 Mbps delivers balanced, predictable bandwidth, letting you squeeze maximum low-latency performance from every memory cycle during high-frequency trading or real-time analytics. At a low 1.2 V, it also reduces the thermal footprint across your rack, directly lowering cooling costs in always-on data centers. This module translates directly into higher uptime, tighter data accuracy, and uncompromised scalability for the workloads you trust it with.
This module is a 16GB DDR4-3200 Registered ECC RDIMM (single-rank, CL22) built for server platforms. Below is the capacity planning guidance for three typical workloads.
General Virtualization
Populate all memory channels per CPU—typically six or eight identical modules—to maximize interleaving and throughput. A dual‑socket server with 12 of these 16 GB DIMMs delivers 192 GB, comfortably supporting dozens of general‑purpose VMs while maintaining the full 3200 MT/s speed. Reserve at least one empty slot per channel if future expansion is expected.
In‑Memory Database
In‑memory databases demand maximum capacity and absolute data integrity. Fully populate every available DIMM slot to reach the highest possible density, such as 384 GB in a 24‑slot server. Distribute the modules equally across NUMA nodes to avoid remote‑memory penalties. The built‑in ECC and registered signalling ensure reliability under sustained, heavy loads.
High‑Performance Computing (HPC)
HPC workloads are bandwidth‑sensitive. Install exactly one DIMM per memory channel to sustain the peak 3200 MT/s frequency and CL22 latency. A common configuration is eight modules per socket for balanced bandwidth. The single‑rank x4 organization helps maintain the high clock rates essential for simulation, modeling, and scientific computation.
Rigorously tested for Dell PowerEdge R750, HPE ProLiant DL380 Gen10, Lenovo ThinkSystem SR650 and more.
Q: Can I mix this M393A2K40DB3-CWEGQ with other memory modules of different brands or speeds?
A: Mixing this RDIMM with different brands or speeds is not recommended. Mismatched modules can cause stability issues or prevent booting. For reliable server operation, use identical modules with the same part number, speed, and rank.
Q: Is this memory compatible with my server?
A: This DDR4-3200 registered ECC module is designed for servers using Intel Xeon Scalable or AMD EPYC platforms. Please verify your motherboard supports 288-pin RDIMMs with 16GB capacity and 1.2V operating voltage before purchasing.
Q: What is the recommended DIMM population order for optimal performance?
A: Typically, populate identical DIMMs per memory channel following the server board’s guide—often slots A1, B1, C1, D1 first. This ensures balanced interleaving and full memory bandwidth. Refer to your system manual for exact slot sequences.
Q: Does this module support overclocking or XMP profiles?
A: No, this is a server-grade registered ECC DIMM. It runs exclusively at JEDEC-standard speeds (DDR4-3200, CL22) without XMP or overclocking support. Server platforms prioritize stability and data integrity over frequency tuning.
Q: What warranty and typical failure rate can I expect?
A: This module comes with a 1-year warranty. As an enterprise-class Samsung component, it delivers very low annualized failure rates under validated conditions, ensuring dependable long-term operation in compliant server environments.