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| Product Type | Memory Module |
|---|---|
| Memory Capacity | 128 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 128GB DDR4-3200 Registered ECC RDIMM is engineered for enterprise server platforms running memory-intensive workloads such as virtualization, in-memory databases, and mission-critical applications where data integrity is non-negotiable. Its quad-rank x4 organization enables dense memory configurations while Registered logic and ECC jointly maintain signal stability and automatic error correction under heavy load, ensuring reliable operation at a latency of CL22.
1. Error correction capability detects and corrects single-bit errors in real time, preserving data integrity for mission-critical database and financial transaction workloads.
2. Registered signal buffering stabilizes command and address lines across fully populated server boards, allowing dense memory configurations without sacrificing signal integrity.
3. Quad-rank construction packs maximum density per module, keeping all memory channels fully utilized to boost virtual machine consolidation ratios under heavy hypervisor loads.
4. High-speed operation elevates memory bandwidth, accelerating in-memory analytics and large-scale virtualization where every gigatransfer counts toward reducing data bottlenecks.
5. Substantial module capacity enables massive memory footprints per server node, empowering large in-memory datasets and extensive container deployment without resorting to slower storage offload.
The Samsung M386AAG40AM3-CWELY is a 128GB DDR4-3200 RDIMM built to eliminate the silent risks that plague enterprise servers. Four architectural strengths directly translate into unfailing workload performance. First, Error-Correcting Code (ECC) actively hunts down single-bit errors. In a dense virtualization cluster, one uncorrected bit-flip can corrupt a hypervisor page table, triggering cascading VM failures and unexpected outages; ECC catches such cosmic-ray-induced faults instantly, safeguarding business continuity. Second, the Registered buffer stabilizes electrical loading, enabling you to populate every DIMM slot across multiple channels without losing signal integrity. This lets you scale a single host to terabytes of RAM, supporting hundreds of virtual machines without compromise. Third, the Quad Rank x4 organization multiplies internal bank groups and delivers module-level interleaving. When an in-memory database like Redis or SAP HANA faces thousands of concurrent queries, this parallelism reduces contention, cuts tail latency, and sustains real-time analytical throughput. Finally, the 3200MT/s speed paired with 128GB capacity merges high bandwidth with extreme density, allowing you to run larger datasets entirely in DRAM and consolidate workloads to drive down total cost of ownership.
Server Memory Identified: This 128GB DDR4-3200 Registered ECC RDIMM (Quad Rank x4, CL22) is exclusively designed for enterprise servers and workstations requiring data integrity and massive capacity.
General Virtualization
Populate all channels symmetrically with identical 128GB RDIMMs—typically six or eight modules per CPU—to maximize memory bandwidth and avoid NUMA imbalances. A dual-socket server with 16 DIMMs per host comfortably supports 2 TB of RAM for dozens of mixed-workload VMs while maintaining full ECC protection.
In-Memory Database
Deploy multiple 128GB modules across all memory controllers to hold entire datasets in RAM for ultra-low latency. For high-availability, configure memory mirroring or sparing; with 12 to 24 DIMMs, you can equip a single node with 1.5 TB to 3 TB of resilient, high-speed storage ideal for Redis, SAP HANA, or real-time analytics.
High Performance Computing (HPC)
Maximize interleaving by installing one DIMM per channel (balanced configuration) to saturate memory bandwidth critical for simulation and modeling. A four-socket server fully loaded with 128GB Quad Rank RDIMMs delivers extreme capacity (up to 6 TB) and performance, but be mindful of the slight latency penalty from Quad Rank—fine-tune BIOS interleaving settings to optimize throughput.
Rigorously tested: compatible with Dell PowerEdge R750, HPE ProLiant DL380 Gen10 Plus, Lenovo ThinkSystem SR650 V2; 128GB DDR4-3200 RDIMM.
Q: Can I mix this M386AAG40AM3-CWELY with other memory modules of different brands or speeds?
A: Mixing is not recommended. Registered DIMMs require identical specifications for signal integrity. Dissimilar modules may cause instability, forced downclocking to the lowest speed, or even failure to POST in server platforms.
Q: Is this memory compatible with my system?
A: This 128GB DDR4-3200 RDIMM is validated for Intel Xeon Scalable (Ice Lake/Cooper Lake) and AMD EPYC 7002/7003 series platforms. Please confirm your motherboard supports 3200MT/s ECC Registered memory and Quad Rank x4 loading.
Q: What is the recommended DIMM population order for optimal performance?
A: Populate identical DIMMs evenly per memory channel, starting with the farthest slot from the CPU. For dual-socket systems, balance capacity across both processors. Always consult your server’s service guide for the exact slot numbering sequence.
Q: Does this module support overclocking or XMP profiles?
A: No. This JEDEC-standard DDR4-3200 CL22 RDIMM does not support overclocking or XMP. Server memory operates strictly at standard speeds to ensure 24/7 reliability and data integrity under error correction.
Q: What warranty and typical failure rate can I expect?
A: This module is covered by a 1-year warranty. Enterprise-grade RDIMMs demonstrate an AFR below 0.3%, reflecting rigorous screening and burn-in, which ensures mission-critical reliability in datacenter environments.