General

Engineer's Note

Designed as a server-grade RDIMM with ECC and registered signaling, this module ensures data integrity and stable operation under sustained loads, making it an optimal fit for virtualization platforms and in-memory database applications. Its 1.35V low-voltage DDR3-1333 operation, combined with single-rank x4 configuration and CL9 latency, reduces power consumption while maintaining consistent signal quality in dense, multi-DIMM server deployments.

Technical Specs & Insights

1. Registered signal type provides stable command and address signaling across high-density server DIMM slots, essential for scaling memory without compromising signal integrity in multi-socket virtualization nodes.
2. ECC error correction detects and corrects single-bit memory faults automatically, safeguarding in-memory database transactions and preventing silent data corruption in 24/7 storage appliances.
3. Single Rank x4 organization uses four-bit-wide DRAMs to maximize interleaving and parallel access within each clock cycle, boosting effective throughput for memory-intensive hypervisor workloads.
4. 1.35V low-voltage operation reduces overall power draw and cooling demands in dense rack deployments, translating into measurable savings on energy and thermal management for cloud scale-out clusters.
5. 1333MHz transfer rate delivers a balance of bandwidth and latency suited to legacy enterprise workloads, sustaining steady performance for web serving and mid-range application tiers during peak loads.

Why These Specs Matter

Designed specifically for server environments, the Micron MT18KSF51272PZ-1G4D1 is a 4GB DDR3-1333 Registered DIMM that directly answers the demands of enterprise infrastructure. For IT managers running dense virtualisation clusters, ECC error correction is non-negotiable. A single bit flip caused by background radiation can crash a production virtual machine or corrupt a live transaction; this module’s ECC silently detects and corrects those errors in real time, preserving the integrity of every compute instance across a hypervisor like VMware ESXi. The Registered signal buffering stabilises command and address lines, so when all 24 DIMM slots on a server board are populated to maximise RAM for a large in-memory database such as Redis or SAP HANA, your system continues to operate reliably without timing degradation. Operating at 1.35V, the low-voltage DDR3L design reduces energy consumption and thermal stress inside rack-mounted enclosures, lowering cooling costs and extending service life. Its single-rank x4 configuration optimises electrical loading per channel, ensuring consistent latency and broad chipset compatibility during memory-intensive scale-out. In an environment where every second of downtime translates into revenue loss, this RDIMM delivers the fault-tolerant stability that mission-critical workloads demand.

Endurance & Reliability

General Virtualization
For a hypervisor hosting multiple VMs, total capacity overshadows single-module size. Deploy at least six of these 4 GB RDIMMs per socket (24 GB) to handle moderate consolidation; balance across all memory channels to maximize throughput and prevent swapping under mixed loads.

In-Memory Database
In-memory workloads demand both capacity and error resilience. Use identical 4 GB ECC RDIMMs fully populating all channels—typically 12 or more modules per CPU—to reach 48–96 GB. Single-rank x4 modules reduce electrical load, allowing higher density while registered signaling maintains stability during intense OLTP or analytics.

High-Performance Computing (HPC)
HPC favors bandwidth over sheer capacity per node. Install one module per channel (e.g., 8 sticks) to sustain peak 1333 MT/s and avoid rank contention. Complement with aggressive interleaving; the 1.35 V low-voltage design also lowers thermal output in dense clusters, supporting sustained compute runs.

Verified Compatibility

Rigorously tested, compatible with Dell R720, HP DL380p Gen8, IBM x3650 M4.

FAQ