General

Engineer's Note

Designed for enterprise server environments, this Samsung M386A4G40DMO-CP8 32GB DDR4-2133 RDIMM leverages registered signaling and ECC to ensure data integrity under heavy, sustained loads typical of virtualization clusters and in-memory databases. Its quad-rank x4 organization maximizes capacity density per channel, while the low CL15 latency keeps response times tight for transaction-heavy applications.

Technical Specs & Insights

1. ECC error correction guarantees data integrity by silently fixing single-bit flips, preventing silent corruption in transactional databases and virtualized workloads.
2. Registered signal buffering decouples the memory controller from heavy load, enabling large DIMM populations and rock-solid stability in dense multi-socket servers.
3. A 32GB module capacity directly boosts virtual machine density per node, lowering per-VM licensing and infrastructure costs through superior consolidation ratios.
4. Quad Rank x4 organization interleaves memory accesses across four internal blocks, fully saturating the channel to deliver consistent bandwidth under heavy multi-tenant pressure.
5. DDR4-2133 operation at 1.2V provides a balanced 17GB/s throughput, efficiently feeding in-memory analytics while maintaining thermal headroom in densely packed racks.

Why These Specs Matter

The Samsung M386A4G40DMO-CP8 is a 32GB DDR4-2133 Registered ECC RDIMM designed for server environments where data integrity and massive capacity are non-negotiable. ECC eliminates silent bit flips that can corrupt financial transactions in an in-memory database like SAP HANA, safeguarding your business from application crashes. The registered buffer stabilizes address and command signals, allowing you to fully populate all DIMM slots per channel and scale to terabytes of RAM for dense virtualization clusters without risking signal degradation or host downtime. Quad Rank x4 architecture uses bank interleaving to boost parallel data access; this means dozens of VMs competing for memory experience lower latency and higher sustained throughput. Operating at 1.2V, the 32GB module dramatically cuts power and cooling costs. In a hyperconverged deployment running both virtual desktops and real-time analytics, this memory delivers uncompromising stability, efficient bandwidth, and measurable TCO reduction—turning your server farm into a reliable profit center.

Endurance & Reliability

General Virtualization
For a typical hypervisor hosting 20–30 mixed VMs, balance density and cost by installing six 32GB RDIMMs in a dual-socket server (3 DIMMs per CPU channel, 192GB total). This quad-rank registered DIMM at 2133MHz provides reliable ECC protection and leaves memory slots available for future scaling, ideal for moderate overcommit ratios.

In-Memory Database
To minimize latency for large in-memory datasets, fully populate all memory channels with eight identical M386A4G40DMO-CP8 modules (256GB total) in a dual-socket platform. The registered ECC and quad-rank design deliver the data integrity critical for Redis or SAP HANA, while a balanced one-DIMM-per-channel population avoids performance penalties from mixed ranks.

High-Performance Computing
For memory-bandwidth-sensitive HPC workloads, deploy eight of these 32GB RDIMMs in a balanced configuration (one DIMM per channel, 256GB total). At DDR4-2133 and CL15, the uniform quad-rank population sustains high throughput for simulation or rendering nodes; use identical part numbers across all sockets to eliminate timing skew and ensure the reliability required by long-running parallel jobs.

Verified Compatibility

Rigorously tested, compatible with Dell PowerEdge R740, HPE ProLiant DL380 Gen10, and Lenovo ThinkSystem SR650.

FAQ