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| Product Type | Memory Module |
|---|---|
| Compliance Standards | |
| Memory Capacity | 64 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 | Quad Rank x4 |
| Quantity of Pins | 288-pin |
| RAM Genre | RDIMM |
This 64GB DDR4-3200 RDIMM with ECC and Registered signal type is engineered for enterprise server platforms, delivering the data integrity and reliability essential for virtualization, in-memory databases, and mission-critical workloads. The Quad Rank x4 configuration maximizes memory density per channel, while the 1.2V low-power design and CL22 latency ensure stable, efficient operation in high-capacity deployments.
1. High-density module capacity empowers IT architects to consolidate more virtual machines per physical host, directly lowering data center footprint and licensing costs.
2. Elevated memory bandwidth keeps multi-core server processors fed with data, slashing query times in transactional databases and accelerating real-time decision-making.
3. End-to-end error correction prevents silent data corruption, preserving the integrity of critical financial records and customer data in always-on enterprise environments.
4. Registered buffer logic stabilizes signal integrity across fully loaded memory channels, enabling uncompromised system uptime even as DIMM population scales to terabyte-level configurations.
5. Quad Rank x4 organization maximizes per-channel capacity and enables deep memory interleaving, sustaining high throughput for large-scale in-memory analytics and dense virtualization workloads.
The Samsung M386A8K40DM2-CWEZQ is unmistakably a server‑grade registered DIMM, and its engineering directly addresses the pain points of data center operators. In an in‑memory database like Redis or SAP HANA, a single uncorrected bit flip can quietly corrupt a financial ledger or a customer profile. The module’s ECC feature intercepts such errors in real time, transforming silent data corruption into a non‑event and preserving the transactional trust your business relies on. When you are scaling a virtualization cluster to host hundreds of VMs per node, populating every available slot is essential. The registered buffer isolates the memory controller from excessive electrical load, so loading twenty‑four of these 64GB quad‑rank modules does not destabilize the bus; that means you can confidently hit multi‑terabyte footprints without sacrificing uptime. The quad‑rank x4 design itself amplifies this value through rank interleaving. While one rank is reading data, the next can already begin a new operation, dramatically reducing the effective latency seen by multiple virtual machines competing for resources. Paired with a 3200 MT/s transfer rate and a fixed 1.2 V power envelope, the module delivers 25.6 GB/s of sustained bandwidth per channel, keeping your real‑time analytics pipelines saturated and your power budget in check. In dense virtualization and critical in‑memory workloads, these four characteristics are not features on a datasheet—they are the difference between a revenue‑generating service and a costly outage.
General Virtualization
For dense VM consolidation, quad-rank 64GB RDIMMs allow high capacity per channel without excessive DIMM counts, preserving memory bandwidth. Populate in multiples of eight across the CPU’s memory channels to maintain balanced NUMA access. Aim for a minimum of 256GB (4 x 64GB) per socket for typical mixed workloads, scaling to 512GB for heavier overcommit.
In-Memory Database
A single 64GB quad-rank RDIMM maximizes slot efficiency in scale-up platforms, leaving room for future expansion. Deploy six to eight identical modules per socket for full interleaving and optimal latency on large Redis or SAP HANA instances. Configure all channels symmetrically to avoid bandwidth bottlenecks during sustained in-memory analytics.
High Performance Computing
Quad-rank x4 RDIMMs suit capacity-driven HPC jobs where total memory per node outweighs per-core bandwidth. Install a full population — typically 8 or 16 DIMMs per dual-socket node — to saturate channels while delivering 512GB to 1TB of DDR4-3200 memory. Pay attention to rank count to stay within platform limits and maintain 2933 MT/s or 3200 MT/s speeds under full load.
Rigorously tested, compatible with Dell PowerEdge R750, HPE ProLiant DL380 Gen10 Plus, Lenovo ThinkSystem SR650 V2.
Q: Can I mix this M386A8K40DM2-CWEZQ with other memory modules of different brands or speeds?
A: Mixing RDIMMs of different brands or speeds is not recommended. It can cause signal integrity issues, resulting in instability or POST failures. For mission-critical server environments, uniform modules ensure validated, reliable operation.
Q: Is this memory compatible with my Intel or AMD server platform?
A: This DDR4-3200 ECC Registered DIMM is compatible with platforms supporting RDIMMs, such as Intel Xeon Scalable (2nd Gen+) and AMD EPYC 7002/7003 series. However, always verify your server's qualified vendor list (QVL).
Q: What is the recommended DIMM population order for optimal performance with this 64GB Quad Rank module?
A: Populate identical modules per channel, starting with the slot farthest from the CPU. For quad rank RDIMMs, balance channels and limit devices per channel to avoid speed downgrades; refer to your system's memory population guide.
Q: Does this module support overclocking or XMP profiles?
A: No. This is a JEDEC-compliant server RDIMM operating at fixed CL22 timings. It does not support overclocking or XMP, as server platforms prioritize stability and data integrity over variable frequencies.
Q: What warranty and typical failure rate can I expect for this memory?
A: This module carries a one-year warranty. It is built with high-quality Samsung components and rigorous testing, yielding an annualized failure rate (AFR) far below 1% under typical enterprise conditions.