General

Engineer's Note

Designed for enterprise-class servers, this 128GB DDR4-3200 RDIMM with ECC and registered signal buffering ensures maximum data integrity and signal stability, making it ideal for virtualization clusters and in-memory databases that demand high capacity and rock-solid reliability. Its quad-rank x4 configuration pushes per-channel density limits while maintaining a moderate CL22 latency, allowing dense memory population without sacrificing consistent 3200MT/s throughput.

Technical Specs & Insights

1. Packing 128GB onto a single stick, this module lets IT operators maximize memory capacity per server node, unlocking higher VM consolidation ratios and smoother in-memory database scaling inside private clouds.
2. The 3200 MT/s throughput supplies 25.6 GB/s of peak bandwidth per channel, keeping latency-sensitive workloads like real-time analytics and ERP transactional systems running decisively under concurrent user spikes.
3. On-the-fly ECC correction neutralizes single-bit errors before they corrupt results, delivering the data integrity that 24/7 financial ledgers and scientific simulations cannot afford to lose.
4. Registered buffering re-drives command and address signals to reduce electrical loading, allowing fully populated memory slots to sustain rock-solid uptime even under relentless virtualization pressure.
5. A quad-rank, x4 array condenses extreme density into one module while the RDIMM architecture preserves clean signal margins, giving server builders the headroom to run high-capacity memory channels without trading off reliability.

Why These Specs Matter

When you’re running a dense virtualization cluster or an in-memory database like SAP HANA, every bit of data and every clock cycle counts. The Samsung M393AAG40M32-CAECO is an enterprise-grade 128GB DDR4-3200 Registered DIMM purpose-built for these exact workloads, and its four defining characteristics directly address what keeps infrastructure managers awake at night. First, Error Correcting Code (ECC) actively detects and corrects single-bit memory errors in real time—flipping a bit from cosmic radiation isn’t theory in a data center, it’s a statistical certainty that ECC neutralizes before it corrupts a financial transaction or a live customer record. Second, the Registered (buffered) architecture with a dedicated command/address register stabilizes the electrical load when populating all 24 DIMM slots on a dual-socket server, which means you can confidently scale to terabytes of RAM without signal integrity collapse. Third, the Quad Rank x4 organization packs 128GB into a single module using higher-density DRAM stacks, maximizing memory per channel and freeing up precious DIMM slots for future growth—this directly lowers per-gigabyte TCO in hyperconverged nodes. Fourth, the native PC4-25600 speed at 1.2V delivers 25.6 GB/s of bandwidth per module, drastically reducing latency for massive in-memory datasets and enabling more virtual machines per host without memory-bus contention. In a virtualized cluster, this combination lets you double VM density while maintaining strict isolation and data integrity; for an in-memory database, it means faster query results and absolute reliability that a row didn’t silently flip under load. This isn’t just a memory module—it’s a foundation for non-stop, accurate, and dense data processing where downtime or data corruption is simply not an option.

Endurance & Reliability

General Virtualization
For a virtualized environment hosting multiple VMs, populate at least one DIMM per memory channel to maximize bandwidth. With 128GB RDIMMs, a dual-socket server using 8 modules (one per channel in an 8-channel system) delivers 1TB of capacity, allowing dense VM consolidation. Balance total capacity against NUMA boundaries and leave headroom for memory overcommit and failover resources.

In-Memory Database
In-memory databases like SAP HANA or Redis demand both large capacity and low latency. Install identical 128GB quad-rank RDIMMs across all memory channels, populating two DIMMs per channel if the platform supports it, to reach the multi-terabyte scale required for real-time analytics. Keep all memory channels balanced to avoid bandwidth bottlenecks, and strictly follow the database vendor’s certified configurations to ensure data integrity under heavy load.

High-Performance Computing (HPC)
HPC workloads such as CFD simulations or molecular dynamics rely on sustained memory bandwidth. Configure the system with a balanced, symmetric population of these 3200MT/s registered DIMMs across all available memory channels—typically one DIMM per channel for optimal frequency. While capacity is generous, prioritize channel population over maximum density; consider populating all channels with a single 128GB module each to maintain 1DPC (DIMM per channel) speeds, then scale by adding a second rank-balanced module per channel only if capacity demands it.

Verified Compatibility

Rigorously validated compatible with Dell PowerEdge R750/R740, HPE ProLiant DL380 Gen10, Lenovo ThinkSystem SR650, and Supermicro X12 servers.

FAQ