Secure payments
Standard refund policy
Trade Assurance
| Model | M386A8K40BM0-CPB |
|---|---|
| Product Type | Memory Module |
| Compliance Standards | EU RoHS,FCC |
| Memory Capacity | 64 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 | Quad Rank x4 |
| Quantity of Pins | 288-pin |
| RAM Genre | RDIMM |
Designed for enterprise servers, this Samsung M386A8K40BM0-CPB 64GB DDR4-2133 RDIMM leverages Registered ECC memory to ensure end-to-end data integrity in virtualized environments and in-memory databases. Its quad-rank x4 organization and CL15 latency maximize capacity density per channel while maintaining stable signal integrity under heavy, multi-DIMM workloads.
1. Ample module capacity supports dense virtual machine consolidation, reducing per-server hardware footprint in enterprise data centers.
2. ECC protection corrects single-bit memory faults in real time, preserving data integrity for financial transactions and database operations.
3. Registered buffering stabilizes command and address lines, enabling fully populated multi-DIMM channels without compromising signal quality.
4. Quad Rank x4 organization keeps the memory pipeline efficiently utilized, delivering predictable bandwidth under heavy multi-tenant workloads.
5. Standard DDR4 speed ensures wide compatibility across server platforms, simplifying fleet maintenance and lifecycle management.
As a server-class RDIMM, the Samsung M386A8K40BM0-CPB is engineered to solve the critical pain points that keep data center architects awake at night—unplanned downtime, silent data corruption, and memory bandwidth bottlenecks. In a dense virtualization cluster hosting dozens of VMs, every socket is pushed to its limit. This module’s Registered signal architecture buffers the command and address lines, which means you can populate all channels with 64GB of high-capacity Rank x4 memory without compromising signal integrity, achieving the massive memory pool your hypervisor demands. Paired with hardware ECC, it continuously detects and corrects single-bit errors caused by cosmic radiation or electronic noise, ensuring that a flipped bit won’t silently corrupt your transactional database or bring down a critical virtual machine.
For in-memory databases like SAP HANA or a high-throughput Redis cache, low latency and sustained throughput are paramount. The Quad Rank design leverages rank interleaving to overlap data fetches, reducing idle cycles and accelerating concurrent read/write operations under heavy query loads. This translates directly to faster inventory lookups or real-time fraud analysis. Meanwhile, the 1.2V DDR4 voltage significantly lowers power consumption per DIMM, shrinking both operational expenses and thermal stress across racks of servers. What this means for you is simple: uncompromised data integrity for mission-critical workloads, maximum memory density without instability, and energy efficiency that slashes your TCO in a 24/7 enterprise environment.
This 64GB Registered ECC memory module (M386A8K40BM0-CPB) is a quad-rank DDR4-2133 RDIMM built for servers. Capacity planning must account for quad-rank loading; full 2133 MT/s is typically maintained only with one DIMM per channel (1DPC). Below are workload-specific recommendations.
General Virtualization
Install one DIMM per memory channel across all sockets to sustain 2133 MT/s and balanced bandwidth. A dual‑socket platform with eight channels each provides 1 TB, easily supporting dozens of virtual machines. If higher density is essential, two quad‑rank DIMMs per channel may force a speed drop to 1866 MT/s — weigh this trade‑off carefully.
In‑Memory Database
Maximize capacity by populating two DIMMs per channel where the platform permits, accepting a likely speed downgrade to 1866 MT/s while reaching multi‑terabyte footprints. For latency‑critical workloads, restrict to one DIMM per channel to preserve full speed. Always benchmark with your specific database to find the optimal density‑latency balance.
High‑Performance Computing
Achieve peak memory bandwidth by deploying exactly one quad‑rank DIMM per channel at 2133 MT/s. Fill all channels to enable full interleaving and uniform memory access. This configuration delivers 512 GB per socket (8 channels × 64 GB) with low latency, keeping compute‑bound HPC codes fed without throttling.
Rigorously validated server memory: Dell PowerEdge R750, HPE ProLiant DL380 Gen10, Lenovo ThinkSystem SR650.
Q: Can I mix this M386A8K40BM0-CPB with other memory modules of different brands or speeds?
A: Mixing RDIMMs from different brands or speeds is not advised. It can force all modules to the lowest speed and cause stability issues, potentially invalidating platform qualifications.
Q: Is this memory compatible with my Intel Xeon or AMD EPYC server platform?
A: This 64GB DDR4-2133 ECC Registered RDIMM is compatible with Intel Xeon E5-2600 v3/v4 and select AMD EPYC platforms. Always verify your motherboard's QVL for this specific Samsung module.
Q: What is the recommended DIMM population order for optimal performance?
A: Populate DIMMs beginning with the slot farthest from the CPU per channel. For this quad-rank module, balance identical modules symmetrically across all memory channels to maximize throughput.
Q: Does this module support overclocking or XMP profiles?
A: No. This server-grade Registered ECC memory strictly follows JEDEC standards. It does not support overclocking or XMP profiles, ensuring reliable operation at the specified 2133MT/s.
Q: What warranty and typical failure rate can I expect?
A: This module includes a 1-year warranty. It exhibits a very low annualized failure rate, typically under 0.5%, due to Samsung's stringent testing and high-quality DRAM components.