General

Engineer's Note

This DDR4-2400 Registered ECC RDIMM is tailored for server platforms running virtualization, in-memory databases, or other mission-critical enterprise workloads where data integrity and uptime are paramount. Its dual-rank x4 organization combined with registered buffering and ECC delivers robust signal integrity and single-bit error correction, ensuring stable operation under heavy, sustained memory access.

Technical Specs & Insights

1. ECC protection silently corrects single-bit memory errors in real time, preserving data integrity for transactional databases and virtualization hosts where even a single undetected flip could corrupt critical records.
2. Registered clock and command buffering stabilizes signal integrity across fully populated memory channels, allowing dense server configurations to scale to terabyte-class footprints without compromising uptime.
3. Dual Rank x4 organization interleaves bank groups to sustain high effective bandwidth under concurrent multi-tenant workloads, preventing throughput bottlenecks during peak cloud service hours.
4. A generous 32-gigabyte per module density consolidates more active virtual machines into the same physical node, directly boosting consolidation ratios and deferring costly hardware expansion.
5. Low 1.2-volt operation curbs power consumption and thermal output per DIMM in large fleet deployments, improving overall power usage effectiveness and reducing cooling infrastructure strain.

Why These Specs Matter

When your infrastructure runs business-critical virtualization clusters, data integrity is not negotiable. The Samsung M386A4K40BB0-CRC4Q is an RDIMM engineered specifically for this reality, and its four defining characteristics translate directly into uptime and performance. The ECC technology continuously detects and corrects single-bit errors caused by background radiation, preventing silent data corruption that could crash a hypervisor hosting dozens of virtual machines. Its registered signal type buffers the command and address lines, stabilizing the electrical load so you can populate all memory channels with 32 GB modules without compromising signal integrity—essential when scaling a VMware or KVM cluster to hundreds of VMs. The dual-rank x4 organization interleaves memory banks to deliver higher sustained bandwidth, which is critical for in-memory databases like SAP HANA or Redis where sub-millisecond latency drives real-time analytics. Operating at 1.2 V, the module reduces thermal stress in dense 1U servers, while CL17 latency strikes the optimal balance between speed and stability at DDR4-2400. For the IT architect managing a multi-tenant virtualization layer or a high-throughput transactional database, this DIMM is not just a component; it is the silent guarantor of consistency, resilience, and predictable throughput at scale.

Endurance & Reliability

General Virtualization
For a typical hypervisor hosting mixed workloads, balance capacity and cost by deploying six to eight of these 32 GB RDIMMs across a dual-socket server. This yields 192–256 GB of registered ECC memory, comfortably supporting 30–50 moderate virtual machines while maintaining headroom for vMotion and failover events. Populate all memory channels symmetrically per CPU to maximize memory bandwidth and ensure stable performance under consolidation.

In-Memory Database
In-memory database engines like Redis or SAP HANA demand both capacity and data integrity. Equip each node with at least 512 GB by installing sixteen 32 GB modules across both processors (eight DIMMs per CPU, one per channel). The registered ECC corrects single-bit errors, vital for keeping transactional data corruption-free under heavy, sustained loads. Add extra capacity nodes for dataset growth and replication overhead.

High-Performance Computing
HPC workloads such as CFD simulations or genomic sequencing require high bandwidth more than sheer capacity. Install twelve modules (six per socket) for a total of 384 GB, targeting one DIMM per channel to maximize memory clock stability at DDR4-2400. The dual-rank x4 chips deliver balanced throughput; supplement with job scheduling that fits working sets into this fast, reliable memory footprint to avoid swapping.

Verified Compatibility

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

FAQ