General

Engineer's Note

Designed for server environments, this DDR4-3200 Registered ECC RDIMM delivers reliable 16GB capacity with a single-rank configuration and CL24 latency, making it ideal for memory-intensive workloads such as virtualization and in-memory databases. The registered signal type ensures robust signal integrity in densely populated systems, while ECC error correction safeguards data integrity to prevent costly downtime.

Technical Specs & Insights

1. A 16GB capacity provides a dense yet flexible building block, enabling cloud hosts to pack more tenant virtual machines per rack while keeping memory overcommit ratios low.
2. ECC actively corrects single-bit errors in real time, preserving data integrity for in-memory databases and financial ledgers where even one silent corruption is unacceptable.
3. Registered signaling offloads electrical loading from the CPU memory controller, allowing all channels to be populated with high-capacity RDIMMs without sacrificing signal stability.
4. 3200MT/s throughput supplies the sustained bandwidth that heavily threaded analytics engines demand, preventing CPU cores from stalling while processing in-memory datasets.
5. Single-rank architecture keeps per-rank capacitive load minimal, helping maintain low latency when memory channels are fully populated in dense virtualized clusters.

Why These Specs Matter

For server environments, the Samsung M393A2K40EB3-CWEC0 addresses critical data-center pain points through four engineered strengths. ECC error correction silently catches single-bit upsets caused by background radiation—left unchecked, these bit-flips can corrupt your virtualization cluster’s state or introduce inaccuracies into an in-memory database like Redis, directly threatening uptime and transactional integrity. The registered buffer stabilizes command and address signals, enabling you to fully populate memory channels for dense VM hosts without signal degradation or boot failures. Its single-rank, 3200 MT/s architecture provides lower access latency and consistent high bandwidth, accelerating real-time analytics and caching tiers where every nanosecond counts. Operating at just 1.2V, the module reduces power draw across your fleet, cutting cooling costs and improving total cost of ownership. These characteristics mean reliable performance whether you are scaling a Kubernetes cluster or running high-frequency trading databases.

Endurance & Reliability

General Virtualization
This 16GB DDR4-3200 RDIMM with ECC is ideal for dense virtualization hosts. In a dual-socket server, install at least four identical modules per CPU to populate balanced memory channels, yielding 64GB total for light to moderate VM workloads. Scale to eight modules (128GB) when supporting more memory-intensive guests, ensuring you maintain uniform single-rank DIMMs for optimal signal integrity and interleaving.

In-Memory Database
For in-memory databases like Redis or SAP HANA, capacity is paramount. Start with a minimum of eight of these 16GB modules (128GB) per node to hold substantial datasets entirely in RAM, and double to sixteen modules (256GB) for production-grade transactional systems. Always install in identical sets across all memory channels to preserve registered ECC performance and avoid NUMA imbalances.

High-Performance Computing (HPC)
HPC clusters demand both bandwidth and reliability. Populate all eight memory channels per socket with a single 16GB RDIMM each (128GB total per node) to maximize memory bandwidth via full interleaving. For memory-bandwidth-bound simulations, a one-DIMM-per-channel configuration with these single-rank, CL24 modules delivers the lowest latency without unnecessary rank loading, while ECC guards against silent data corruption during long compute runs.

Verified Compatibility

This server DDR4 ECC RDIMM is stringently tested and compatible with Dell R750, HPE DL380 Gen10, Lenovo SR650, and more.

FAQ