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| Product Type | Memory Module |
|---|---|
| Memory Capacity | 16 GB |
| Memory Technology | DDR4 |
| Product Voltage | 1.2V |
| RAM Speed | 2133MHz |
| RAM Standard | DDR4-2133/PC4-17000 |
| Error Identifying | ECC |
| Signal Type | Registered |
| Column Access Strobe (CAS) | CL15 |
| Rank | Dual Rank x4 |
| Quantity of Pins | 288-pin |
| RAM Genre | RDIMM |
Designed for enterprise server platforms, this 16GB DDR4-2133 RDIMM with ECC and a registered signal type ensures robust data integrity in virtualized environments and memory-intensive database workloads. Its dual-rank x4 configuration optimizes bank-level parallelism to sustain high throughput, while the 1.2V low operating voltage reduces overall power consumption in dense rack deployments.
1. RDIMM architecture enforces stringent signal integrity on fully loaded server motherboards, allowing data centers to maximize memory capacity without risking downtime from electrical noise.
2. ECC protection silently corrects single-bit errors in real time, preventing silent data corruption in mission-critical applications like financial transactions and virtualization hosts.
3. Registered clock and command buffering stabilizes the control bus across numerous DIMMs per channel, essential for scaling up memory density in large-scale cloud infrastructure.
4. Dual rank x4 interleaving stripes access across multiple bank groups, sustaining high throughput under concurrent query loads typical of in-memory databases and analytics clusters.
5. A 16GB capacity per module strikes an optimal balance for consolidating multiple enterprise VMs, giving each guest enough dedicated memory to avoid swapping under peak loads.
When you deploy the Samsung M386A2G40DB0-CPB, a 16GB DDR4-2133 Registered DIMM, you are directly addressing the realities of enterprise computing where unplanned downtime and sluggish virtualization carry staggering costs. This module’s first critical asset is ECC error correction. In memory-driven databases like SAP HANA or financial trading systems, a single undetected bit-flip can corrupt a transaction record. ECC detects and corrects single-bit errors silently, transforming a potential data integrity disaster into a non‑event.
Its registered signal design solves a painful density challenge: as you populate 24 or more DIMM slots per server for heavy virtual machine consolidation, unbuffered modules cause signal degradation and boot failures. The onboard register buffers command and address lines, stabilizing the entire channel and allowing you to confidently scale to hundreds of gigabytes without sacrificing reliability. The dual‑rank x4 organization then directly boosts throughput through rank interleaving—while one rank processes a read, the other precharges, effectively hiding latency and increasing bandwidth for multiple concurrent VMs and containerized workloads.
Finally, the 1.2V operating voltage, compared to older DDR3 generations, significantly lowers thermal output per DIMM in a fully loaded 2U rack chassis. This reduces cooling demands and extends the service life of your platform, making the M386A2G40DB0-CPB not just a memory upgrade, but a strategic decision for data integrity, scalable virtualization performance, and operational resilience.
Server Memory Identified
This is a 16GB DDR4-2133 Registered ECC RDIMM (CL15, Dual Rank x4, 1.2V). Designed for enterprise-class servers, it prioritizes data integrity and scalable capacity. Below are capacity planning guidelines for three typical server workloads.
General Virtualization
Populate at least one DIMM per memory channel to balance bandwidth and capacity. For a dual-socket server with 8 channels each, starting with 8×16GB (128GB) comfortably hosts over 20 light VMs. Scale to 16 modules (256GB) for moderate consolidation, relying on ECC to prevent hypervisor crashes in multi-tenant environments.
In-Memory Database
Maximize total capacity while respecting memory channel limits. Fully populate all 16 DIMM slots in a dual-socket system to reach 256GB—ideal for Redis or Memcached clusters. The Registered ECC design ensures 24/7 data accuracy, and the dual-rank configuration provides a slight latency advantage for cache-heavy operations.
High-Performance Computing (HPC)
Opt for a balanced, fully-populated configuration across all channels to maximize aggregate memory bandwidth. 16 identical DIMMs (256GB) per node satisfy most MPI workloads. Although 2133MT/s is moderate, the uniform quad-channel or six-channel interleaving, combined with ECC resilience, stabilizes long-running simulations.
Verified server DDR4 rigorously tested, compatible with Dell PowerEdge R730, HPE DL380 Gen9, Lenovo x3650 M5.
Q: Can I mix this M386A2G40DB0-CPB with other memory modules of different brands or speeds?
A: Mixing RDIMMs of different brands, speeds, or part numbers is not recommended. It can cause system instability, as registered ECC modules require identical electrical and timing characteristics for reliable server operation.
Q: Is this memory compatible with my system?
A: This DDR4-2133 RDIMM is designed for server platforms supporting registered ECC memory, such as Intel Xeon E5-2600 v3/v4 or select AMD EPYC systems. Verify your motherboard or server model supports dual-rank x4 RDIMMs.
Q: What is the recommended DIMM population order for optimal performance?
A: Follow your server’s manual; typically populate identical DIMMs in each memory channel starting from the farthest slot from the CPU, balancing capacity and ranks across channels for optimal throughput.
Q: Does this module support overclocking or XMP profiles?
A: No. This is a JEDEC-compliant server RDIMM. It does not support XMP or overclocking, providing fixed 2133MHz speed with CL15 timings for mission-critical stability.
Q: What warranty and typical failure rate can I expect?
A: This module includes a 1-year warranty. Server-grade RDIMMs undergo rigorous testing and exhibit very low failure rates, ensuring reliable performance in 24/7 data center environments.