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| Product Type | Memory Module |
|---|---|
| Memory Capacity | 32 GB |
| Memory Technology | DDR4 |
| Product Voltage | 1.2 V |
| RAM Speed | 2133 MHz |
| 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 specifically for enterprise server platforms, this 32GB DDR4-2133 Registered ECC DIMM (M386A4G40DM0-CPB) excels in virtualization clusters, in-memory databases, and data-critical applications where uptime is essential. Its quad-rank x4 organization maximizes capacity per channel, while the registered interface and CL15 timing deliver superior signal stability and reliable command/address transfer under fully loaded configurations.
1. ECC: Single-bit error correction prevents silent data corruption, preserving financial transaction integrity in always-on enterprise servers.
2. Registered: Command/address signal buffering stabilizes high-density memory configurations, enabling confident scaling of virtualization hosts to hundreds of VMs.
3. 32GB capacity: Generous per-module density reduces the number of DIMMs needed for large memory footprints, lowering power and cooling demands in dense rack deployments.
4. Quad Rank x4: Four rank groups interleave access across the memory channel, delivering sustained bandwidth saturation for real-time big data analytics engines.
5. CL15 latency: The low CAS latency accelerates response times for in-memory databases, cutting microseconds from each query to improve end-user application performance.
The M386A4G40DM0-CPB is an enterprise-grade 32GB DDR4-2133 Registered DIMM, engineered specifically for server infrastructures where uptime and data integrity are non-negotiable. For your virtualized cluster, ECC error correction silently detects and corrects single-bit memory errors. Without it, a cosmic ray flipping a single bit in a hypervisor’s memory mapping can corrupt an entire guest VM, leading to unexplained crashes or silent data corruption in financial transaction logs. The registered signal buffer tackles the electrical loading challenge head-on: it allows you to populate every channel with these high-density Quad Rank modules without sacrificing stability. This directly translates to packing 50% more virtual machines onto the same physical host, maximizing your license and floor space ROI. Meanwhile, the Quad Rank x4 organization leverages bank interleaving to sustain throughput under parallel access patterns. Picture an in-memory database like Redis handling millions of concurrent queries; that bank-level parallelism prevents bandwidth starvation, dramatically reducing tail latency during peak load. With a cool 1.2V operating voltage, it also helps keep thermal footprints in check inside dense rack deployments, ensuring 24/7 reliability for database acceleration and heavy consolidation workloads.
General Virtualization
For a virtualized host, populate at least one 32GB RDIMM per memory channel to balance density and cost. A dual-socket server with 8 channels per CPU benefits from 16 of these modules (512GB total), allowing dozens of VMs with ECC protection.
In-Memory Database
Maximize capacity by filling all channels with a single quad-rank 32GB RDIMM per channel—this avoids rank overloading while delivering large, reliable memory pools essential for in-memory datasets. ECC and registered signaling ensure data integrity under sustained heavy loads.
High-Performance Computing
Distribute identical 32GB RDIMMs evenly across all memory channels to achieve maximum bandwidth. A configuration of one DIMM per channel yields optimal signal integrity and consistent 2133 MT/s speed, critical for memory-bound HPC workloads that demand both bandwidth and capacity.
Rigorously tested server memory, compatible with Dell PowerEdge R750, HPE ProLiant DL380 Gen10, Lenovo ThinkSystem SR650.
Q: Can I mix this M386A4G40DM0-CPB with other memory modules of different brands or speeds?
A: We do not recommend mixing RDIMMs of differing brands, speeds, or ranks. This specific dual-rank x4 module requires identical match to avoid training failures and maintain signal integrity in registered server platforms.
Q: Is this memory compatible with my system?
A: This 32GB DDR4-2133 registered ECC DIMM is compatible with Intel Xeon E5-2600 v3/v4 and select AMD EPYC platforms. Please verify your server board’s Qualified Vendor List for 4Rx4 RDIMM support at 1.2V.
Q: What is the recommended DIMM population order for optimal performance?
A: Follow your motherboard manual precisely. Typically, populate identical DIMMs into slot 1 of each memory channel first. For quad-rank modules, balanced interleaving across channels maximizes throughput and minimizes latency.
Q: Does this module support overclocking or XMP profiles?
A: No. This is a JEDEC-compliant server RDIMM operating at fixed CL15 2133 MT/s. Registered server memory must maintain signal stability under sustained workload and does not support XMP or overclocking features.
Q: What warranty and typical failure rate can I expect?
A: This Samsung module carries a one-year replacement warranty. RDIMMs using premium DRAM exhibit an annualized failure rate below 0.3% in properly cooled enterprise environments with correct operating temperatures.