General

Engineer's Note

Identified as a server-class DDR4 RDIMM, this module is purpose-built for virtualization, in-memory databases, and mission-critical enterprise workloads that demand uncompromising data integrity. Its registered signal architecture with ECC and a dual-rank x8 organization ensures reliable command/address stability while optimizing interleaved bank access for sustained bandwidth under heavy concurrent loads.

Technical Specs & Insights

1. ECC memory detects and corrects single-bit errors in real time, preserving data integrity for financial transactions or database queries that cannot tolerate silent corruption.
2. Registered signal buffering stabilizes command and address lines, enabling dense server deployments to scale beyond dozens of DIMMs without signal degradation.
3. Dual Rank x8 organization keeps memory channels fully interleaved, sustaining high throughput under heavy virtualization workloads where multiple VMs compete for bandwidth.
4. The 8 GB capacity per module offers a cost-efficient building block for moderate-density caching nodes or lightweight container hosts, balancing memory footprint against power draw.
5. DDR4-2400 speed delivers a reliable baseline bandwidth of 19.2 GB/s, handling concurrent log processing or web serving without introducing latency spikes from memory bottlenecks.

Why These Specs Matter

The Samsung M393A1G43EB1-CRC00 is an 8GB DDR4-2400 Registered DIMM engineered for mission-critical servers. Its four defining characteristics—ECC protection, registered signaling, dual-rank architecture, and low 1.2V operation—directly tackle the real-world pain points of data center reliability and performance. In a dense virtualization cluster, a single uncorrected memory bit flip can corrupt guest VMs or financial transactions. Hardware ECC corrects single-bit errors on the fly, preserving data integrity without any performance trade-off. The registered clock driver buffers address and command signals, enabling you to populate all memory channels with multiple DIMMs per channel while maintaining signal clarity. This unlocks massive RAM scalability for hypervisors. For in-memory databases like SAP HANA, the dual-rank x8 design enables rank interleaving: the controller alternates requests between ranks, boosting effective bandwidth and cutting latency during simultaneous reads and writes. Meanwhile, 2400MHz speed and 1.2V operation cut power and cooling in dense racks. This delivers certainty.

Endurance & Reliability

General Virtualization
For a typical hypervisor host running multiple VMs, memory capacity and stability are paramount. Populate the server with at least eight of these 8GB Registered ECC modules for a balanced 64GB configuration, leaving slots free for future scaling. Always install modules in identical sets per memory channel to maintain the symmetric population required for optimal interleaving and reliable ECC operation.

In-Memory Database
In-memory databases like Redis or SAP HANA demand both high capacity and rock-solid error correction. Deploy a fully populated configuration using 16 or 24 of these RDIMMs to reach 128GB–192GB, ensuring the working set resides entirely in RAM. The ECC and registered design prevent silent data corruption, which is critical for transactional integrity.

High Performance Computing (HPC)
HPC clusters benefit from memory bandwidth as much as capacity. Use a balanced one DIMM per channel (1DPC) configuration with these dual-rank modules to maximize bandwidth via rank interleaving while leaving room for future density upgrades. Pair each CPU socket with an identical memory layout across all nodes to guarantee predictable, repeatable performance in tightly coupled parallel jobs.

Verified Compatibility

Rigorously tested server memory, compatible with Dell PowerEdge R760, HPE ProLiant DL380 Gen10, Lenovo ThinkSystem SR650, and more.

FAQ