General

Engineer's Note

Designed for legacy enterprise server platforms, this 4GB DDR3-1866 registered ECC memory module is best suited for virtualization hosts, memory-resident databases, and workloads demanding uncompromising data integrity. The single-rank x4 configuration minimizes bus loading for stable multi-DIMM operation, while registered signal buffering and a tight CL13 latency deliver reliable performance in dense, mission-critical deployments.

Technical Specs & Insights

1. ECC error detection and correction preserves data integrity across long-running server processes, eliminating silent memory faults that would otherwise jeopardize financial transactions or scientific computations.
2. Registered signal buffering decouples the memory controller from DRAM loads, ensuring clean command and address transmission even when all DIMM slots are populated in dense rack servers.
3. 1866 MHz clock speed lifts DDR3 throughput, cutting latency on frequently accessed datasets and speeding up virtual machine provisioning during peak demand.
4. A 4 GB capacity per module allows fine-grained memory provisioning for lightweight containers or branch-office virtualization hosts, keeping cost-per-node strictly aligned with service requirements.
5. Single Rank x4 organization reduces bus loading, making it practical to fully populate enterprise server channels without trading off the rated operating frequency or risking signal degradation.

Why These Specs Matter

This Micron RDIMM is purpose-built for enterprise servers and workstations, where unscheduled downtime simply cannot be tolerated. The registered signal buffering alleviates electrical loading on the memory controller, allowing you to populate multiple channels with high-density modules while maintaining rock-solid signal integrity. In a virtualized cluster running dozens of VMs on a single host, that stability translates directly into reliable multi-tenant performance without random stalls or kernel panics caused by address line overloading. The ECC engine continuously sweeps through every bit, catching and correcting single-bit flips induced by background radiation before they silently corrupt transactional data. For an in-memory database like Redis or SAP HANA, a flipped bit in a caching index is no longer a silent error but a potential financial discrepancy — ECC turns that risk into an instant, logged correction. Operating at 1866MHz with CL13 latency on a single-rank x4 organization, this module balances respectable bandwidth against low command latency, accelerating repetitive small-block operations typical of OLTP queries. When every millisecond of response time counts toward your SLA, this memory eliminates the hidden performance tax of rank contention while guarding the integrity of your critical datasets.

Endurance & Reliability

General Virtualization
Populate six to eight identical 4 GB RDIMMs (24–32 GB) symmetrically across all memory channels. This configuration delivers sufficient headroom for 8–12 typical virtual machines and uses ECC to protect hypervisor integrity. Balanced channel population maximizes available bandwidth for concurrent guest workloads.

In-Memory Database
Maximize capacity by filling every available DIMM slot with these 4 GB registered modules—a 16-slot server yields 64 GB, while a 24-slot platform reaches 96 GB. The registered ECC design maintains signal stability at full population, allowing an entire database to reside in RAM for sub-millisecond response times.

High-Performance Computing
Install at least one 4 GB RDIMM per memory channel (eight modules for a quad-channel system) to achieve 32 GB and fully saturate channel bandwidth. For greater throughput, populate two single-rank x4 modules per channel to enable rank interleaving. The 1866 MT/s speed and CL13 latency ensure fast, deterministic data delivery under heavy floating-point and simulation loads.

Verified Compatibility

This server memory has undergone rigorous testing. Compatible with Dell PowerEdge R720, HP ProLiant DL380p Gen8, Lenovo ThinkServer RD530.

FAQ