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| Product Type | Memory Module |
|---|---|
| Compliance Standards | RoHS,WEEE |
| 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 x8 |
| Quantity of Pins | 288-pin |
| RAM Genre | RDIMM |
This RDIMM with DDR4-3200 speed, ECC, and a registered signal type ensures robust data integrity and stable operation under heavy loads, making it ideal for server platforms running virtualization, in-memory databases, and mission-critical enterprise workloads. Its single-rank x8 organization at 1.2V delivers a balance of low latency (CL22) and power efficiency, enabling higher memory density per channel without sacrificing signal quality in multi-DIMM configurations.
1. Registered signal type buffers commands and addresses, enabling stable operation with large memory populations critical for enterprise virtualization and database servers.
2. ECC error correction detects and fixes single-bit faults in real time, preserving data integrity in financial transactions and mission-critical workloads.
3. A sixteen-gigabyte capacity per module allows dense memory configurations, maximizing virtual machine density without sacrificing memory channel count.
4. The 3200 MT/s transfer rate delivers strong memory bandwidth, accelerating in-memory analytics and reducing latency for heavily consolidated cloud instances.
5. Operating at just 1.2 volts reduces overall server power draw and thermal stress, helping data centers lower cooling costs and improve energy efficiency at scale.
The Samsung M391A2G43BB2-CWEQY is a 16GB DDR4-3200 Registered ECC DIMM, purpose-built for demanding server environments where unplanned downtime directly translates into revenue loss. Its four defining characteristics tackle real-world data center pain points with precision.
First, ECC actively corrects single-bit memory errors, eliminating silent data corruption that could poison financial transactions in an in-memory database like Redis or corrupt a virtual machine’s state in a high-density VMware cluster. Second, the registered signal buffer re-drives address and command signals, enabling you to fully populate all DIMM slots with 16GB modules without signal degradation; this keeps virtualized workloads stable under heavy consolidation. Third, the DDR4-3200 speed delivers 25.6 GB/s of bandwidth, which proves critical when multiple VMs compete for memory access or when an SAP HANA instance needs to scan terabytes of in-memory tables with minimal latency. Finally, the single-rank x8 organization strikes a deliberate balance: it reduces electrical load on the memory controller compared to dual-rank configurations, allowing the server to sustain higher clock speeds while the 1.2V operating voltage cuts power draw across a fully loaded rack. Together, these traits ensure that your transactional databases remain accurate, your virtual machines stay responsive, and your operating costs stay in check—even under 24/7 load.
General Virtualization
Deploy this 16GB DDR4-3200 ECC RDIMM in balanced sets across all memory channels to maximize throughput for mixed VM workloads. A typical dual-socket server benefits from 8 to 16 identical modules (128–256 GB total), populating each channel with one or two DIMMs to maintain 3200 MT/s speed while avoiding bandwidth penalties from heavy rank mixing.
In-Memory Database
For latency-sensitive in-memory databases, density and data integrity are paramount. Fill all slots with this registered ECC module using identical single-rank x8 DIMMs to reach 512 GB or higher per node, enabling large in-memory datasets. Maintain uniform population per channel to avoid NUMA imbalances, and configure sparing or mirroring in the BIOS only if uptime requirements justify the capacity trade-off.
High-Performance Computing (HPC)
Achieve peak memory bandwidth in HPC clusters by using one DIMM per channel (1DPC) at the rated 3200 MT/s. For a typical dual-socket server with 8 channels, install 8 modules for a balanced 128 GB configuration that feeds all cores symmetrically. If capacity must scale, move to 2DPC only after benchmarking, as the speed may drop; stick with identical single-rank RDIMMs to minimize command bus loading and sustain consistent CL22 latency across large-scale MPI jobs.
Rigorously tested server memory: compatible with Dell PowerEdge R750, HPE DL380 Gen10 Plus, and Lenovo SR650 V2.
Q: Can I mix this M391A2G43BB2-CWEQY with other memory modules of different brands or speeds?
A: Mixing RDIMMs of different brands or speeds is strongly discouraged in server environments. For guaranteed stability and ECC integrity, we recommend identical modules with the same Samsung MPN across all populated channels.
Q: Is this memory compatible with my system?
A: This DDR4-3200 Registered ECC module is compatible with servers based on Intel Xeon Scalable or AMD EPYC platforms that support DDR4 RDIMMs. Please consult your system's qualified vendor list to confirm support.
Q: What is the recommended DIMM population order for optimal performance?
A: Follow your server motherboard's population guide. Generally, populate identical DIMMs in balanced channels per processor, starting with one DIMM per channel, to achieve maximum memory bandwidth and symmetric multiprocessing.
Q: Does this module support overclocking or XMP profiles?
A: No. Registered ECC server memory operates strictly at JEDEC-standard 3200 MT/s with CL22 timings. Overclocking and XMP profiles are not supported, as enterprise reliability takes priority over performance tuning.
Q: What warranty and typical failure rate can I expect?
A: This module is covered by a 1-year warranty. Server-grade ECC RDIMMs exhibit very low annualized failure rates, typically under 0.1% when operated within specified temperature and voltage ranges.