General

Engineer's Note

This 4GB DDR3-1600 registered ECC RDIMM, featuring a dual-rank x8 configuration and CL11 latency, is purpose-built for legacy server platforms running virtualization or light in-memory database workloads where data integrity is critical. Its registered signal type stabilizes multi-DIMM channels under heavy load, while active ECC error correction safeguards against single-bit memory faults to maintain enterprise uptime.

Technical Specs & Insights

1. ECC error correction safeguards data integrity in memory, preventing silent bit flips that could corrupt financial transactions or virtualization hosts.
2. Registered signal buffering stabilizes high-capacity server configurations, allowing fully populated DIMM slots without compromising command bus reliability.
3. 1600 MHz data rate delivers ample throughput for moderate-density cloud workloads, ensuring responsive database queries under concurrent user loads.
4. Dual Rank x8 organization interleaves memory accesses across internal banks, boosting effective bandwidth for hypervisors juggling multiple guest instances.
5. 4 GB capacity module supplies a balanced building block for scale-out nodes, optimizing cost-per-gigabyte in web serving and lightweight container deployments.

Why These Specs Matter

When deploying mission-critical virtualization clusters or in-memory databases, the MT18JSF51272PDZ-1G6 RDIMM isn't just another component—it is your baseline for reliability. Its ECC technology continuously detects and corrects single-bit memory errors caused by background radiation, preventing silent data corruption that could crash hypervisors or corrupt financial transactions in a Redis node. Without ECC, a flipped bit in a virtual machine's kernel space can cascade into hours of unexplained downtime. Paired with the registered signal buffer, this module enables a server to populate all 24 DIMM slots without overloading the memory controller, preserving signal integrity across large-scale SAP HANA or VMware farms where every gigabyte matters. The dual-rank x8 architecture further optimizes bandwidth by interleaving access in a 1600MHz stream, effectively increasing throughput for high-concurrency OLTP databases. In a containerized environment running dozens of microservices, this means consistently low latency under burst workloads, turning raw capacity into predictable, transaction-grade performance you can bet your SLA on.

Endurance & Reliability

This DDR3-1600 ECC Registered RDIMM (4 GB, dual-rank, 1.5 V) is designed for server platforms.

General Virtualization
Install one 4 GB RDIMM per memory channel to create a balanced, symmetric configuration. For a dual-socket server with three channels per CPU, six modules deliver 24 GB—enough for light virtualized workloads. To scale, fill every available slot with identical 4 GB DIMMs while preserving balanced channel populations to maintain bandwidth and NUMA consistency.

In-Memory Database
Maximize installed capacity by populating all DIMM slots; a fully loaded 18-slot system reaches 72 GB. The registered ECC corrects memory errors critical for in-memory caching and database operations. Respect the platform’s maximum ranks per channel—these dual-rank x8 DIMMs let you fit three per channel in many servers before speed degradation.

High-Performance Computing
Bandwidth-sensitive HPC clusters benefit from one 4 GB RDIMM per channel to enable full interleaving and symmetric memory access. The dual-rank layout offers higher sustained throughput than single-rank alternatives at the same 1600 MT/s speed. Always deploy identical, ECC-registered modules across all CPU sockets to eliminate NUMA bottlenecks and ensure repeatable run times.

Verified Compatibility

Validated server memory rigorously tested, compatible with Dell PowerEdge R720, HP DL380p Gen8, IBM x3650 M4, and more.

FAQ