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Micron MT18KSF51272PDZ-1G4K1 4GB DDR3 RDIMM 1333MT/s | ECC Server RAM

MPN:MT18KSF51272PDZ-1G4K1 By:Micron Warranty:1 year
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General

Product TypeMemory Module
Compliance StandardsRoHS
Memory Capacity4 GB
Memory TechnologyDDR3
Product Voltage1.35V
RAM Speed1333MHz
RAM StandardDDR3-1333/PC3-10600
Error IdentifyingECC
Signal TypeRegistered
Column Access Strobe (CAS)CL9
RankDual Rank x8
Quantity of Pins240-pin
RAM GenreRDIMM

Engineer's Note

This 4GB DDR3-1333 RDIMM with registered ECC and a low 1.35V operating voltage is purpose-built for entry-level servers and small-scale virtualization hosts, ensuring data integrity in memory-intensive workloads like light database serving or virtual machine management. Its dual-rank x8 organization and CL9 latency deliver stable signal integrity and balanced performance in multi-DIMM server configurations where reliability under sustained load is critical.

Technical Specs & Insights

1. ECC error correction safeguards transactional data integrity in financial databases, preventing silent memory corruption that could lead to costly calculation errors.
2. Registered signal buffering stabilizes memory command and address lines, enabling dense server configurations to scale up memory capacity without compromising signal integrity.
3. Dual Rank x8 organization interleaves bank groups to maximize channel utilization, delivering predictable throughput for heavily consolidated virtual machine workloads.
4. 1.35V low-voltage operation reduces thermal dissipation across populated rack servers, lowering data center cooling overhead while maintaining server-grade reliability.
5. 1333MHz transfer rate ensures balanced bandwidth for mid-tier application servers, sustaining responsive user connections during concurrent session spikes.

Why These Specs Matter

Designed for mission-critical server environments, the MT18KSF51272PDZ-1G4K1 RDIMM is far more than a simple 4GB DDR3 module. Its combination of ECC error correction and registered signal buffering directly addresses the real-world risks that keep IT managers awake at night. In a dense virtualization cluster hosting dozens of virtual machines, a single undetected bit flip caused by background radiation can silently corrupt guest operating systems or hypervisor data, leading to unpredictable crashes. The integrated ECC engine on this module identifies and corrects single-bit errors in real time, preserving transactional integrity without performance penalty. Meanwhile, the registered architecture buffers command and address signals, stabilizing the memory bus when multiple DIMMs populate a server board, which is essential for large-scale deployments like in-memory databases or container orchestrators. The dual-rank x8 organization further optimizes bandwidth through rank interleaving, allowing the memory controller to hide refresh latency and sustain high throughput under concurrent read-write workloads. At an ultra-low 1.35V operating voltage, this module also reduces power consumption and thermal stress across the entire rack, directly lowering cooling costs in always-on data centers. For IT professionals running latency-sensitive financial trading systems or high-concurrency SQL databases, these design choices translate into consistent uptime, faster query responses, and a predictable TCO profile where hardware stability directly safeguards revenue streams.

Endurance & Reliability

General Virtualization
Install one 4GB RDIMM per populated memory channel on each CPU to enable channel interleaving and reliable consolidation. A dual-socket server with triple-channel architecture yields 24 GB using six modules, comfortably supporting a dozen light VMs. For heavier multi-tenant loads, populate a second DIMM per channel (12 modules total, 48 GB) while retaining ECC protection.

In-Memory Database
Maximize capacity by filling every slot with these low-voltage 4GB modules—an 18-slot system delivers 72 GB. Registered ECC safeguards persistent datasets, and the 1.35V operation reduces thermal stress inside densely packed chassis, improving long-term stability for always-on database instances.

High-Performance Computing (HPC)
Achieve peak memory bandwidth by installing one dual-rank DIMM per channel (e.g., four modules for a quad-channel CPU). The uniform CL9 x8 organization ensures predictable latency for streaming and MPI workloads. When capacity limits HPC scaling, deploy two identical modules per channel to preserve balanced loading and sustained throughput without sacrificing error correction.

Verified Compatibility

Rigorously tested server DDR3 ECC RDIMM, compatible with Dell R720, R620, HP DL380p Gen8, DL360p Gen8.

FAQ

Q: Can I mix this MT18KSF51272PDZ-1G4K1 with other memory modules of different brands or speeds?

A: Mixing different brands or speeds is not recommended for registered server memory. It may cause instability or fail to boot. For reliable operation, use identical modules matched by Micron part number across all channels.

Q: Is this memory compatible with my system? Which Intel or AMD platforms support it?

A: It is a DDR3L-1333 RDIMM for servers. Compatible platforms include Intel Xeon E5-2400/2600 v1/v2 series and AMD Opteron 6300/4300 series with C600-series chipsets. Always verify your server’s qualified vendor list.

Q: What is the recommended DIMM population order for optimal performance?

A: Populate identical RDIMMs in matched sets per memory channel, typically following the server motherboard’s numbering sequence (e.g., A1, B1, A2, B2). Refer to your system manual for balanced multi-channel configuration and maximum throughput.

Q: Does this module support overclocking or XMP profiles?

A: No. This is an enterprise-grade registered DIMM with JEDEC-compliant SPD. It does not support overclocking or XMP. It operates strictly at 1333MHz, CL9, 1.35V under standard server BIOS settings.

Q: What warranty and typical failure rate can I expect?

A: The module includes a one-year warranty. As Micron server memory, it undergoes rigorous testing for 24/7 operation. Typical annualized failure rates are below 0.5%, ensuring high reliability in enterprise environments.

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