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Micron MT18JSF25672AZ-1G4G1ZF 2GB DDR3 UDIMM 1333MT/s|Reliable ECC

MPN:MT18JSF25672AZ-1G4G1ZF By:Micron Warranty:1 year
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General

ModelMT18JSF25672AZ-1G4G1ZF
Product TypeMemory Module
Compliance StandardsRoHS
Memory Capacity2 GB
Memory TechnologyDDR3
Product Voltage1.5V
RAM Speed1333MHz
RAM StandardDDR3-1333/PC3-10600
Error IdentifyingECC
Signal TypeUnbuffered
Column Access Strobe (CAS)CL9
RankDual Rank x8
Quantity of Pins240-pin
RAM GenreUDIMM

Engineer's Note

This Micron 2GB DDR3-1333 UDIMM with ECC is engineered for entry-level servers and workstations where data integrity is critical, making it ideal for lightweight virtualization or error-sensitive compute tasks. Its dual-rank x8 organization enhances memory interleaving efficiency, while the unbuffered design and CL9 latency ensure responsive performance in single-processor platforms.

Technical Specs & Insights

1. Error-correcting code memory actively detects and corrects single-bit errors, preserving transaction integrity in always-on server environments where data accuracy is non-negotiable.
2. Unbuffered signal topology reduces controller loading and access latency, providing quick response times for lightweight microservers that prioritize deterministic latency over massive capacity scaling.
3. Dual-rank x8 organization enables rank interleaving, which keeps the data bus highly utilized and improves memory bandwidth during virtualized multi-tenant workloads.
4. The delivered bandwidth conforming to PC3-10600 ensures a steady peak throughput near ten and a half gigabytes each second, well-suited for file-serving and basic database operations without creating I/O stalls.
5. A modest two-gigabyte capacity targets appliance-grade servers and dedicated network gear, where a compact, stable memory footprint aligns perfectly with single-purpose, always-on embedded functions.

Why These Specs Matter

Based on the UDIMM form factor with ECC, 240-pin layout, and unbuffered signal type, this Micron module is unequivocally a server and workstation memory solution—specifically designed for single-processor servers and entry-level professional rigs where data integrity is non-negotiable. For IT professionals, the combination of its four key characteristics directly translates into tangible operational reliability.

First, ECC (Error-Correcting Code) is not a luxury but a necessity. In a virtualization cluster running multiple VMs on a hypervisor, a single bit-flip caused by cosmic radiation can silently corrupt a database transaction or crash a guest machine. This module’s ECC instantly detects and corrects such errors, safeguarding the entire virtualized environment from costly downtime. Second, the unbuffered architecture eliminates the slight latency penalty of registered memory, which is critical for memory-resident databases like Redis or small HPC simulations where sub-microsecond response times matter. Paired with the Dual Rank x8 organization, it enables interleaving that boosts bandwidth utilization, allowing the memory controller to saturate the 1333 MT/s channel more efficiently under heavy concurrent access. The standard 1.5V operation then keeps thermals predictable inside dense server chassis, preventing throttling during sustained loads. Together, these features ensure that your mission-critical services and databases run consistently, accurately, and with the responsive edge that server workloads demand.

Endurance & Reliability

This 2 GB DDR3-1333 ECC unbuffered UDIMM is server-class memory suited for single-socket servers and workstations. Below is the capacity planning guidance for typical server workloads.

General Virtualization
For entry-level virtualized hosts, populate these modules in a balanced multi-channel configuration. On a triple-channel platform, install two 2 GB DIMMs per channel (six modules total) to achieve 12 GB of ECC-protected memory, which can comfortably run three to four light VMs. Double the population to twelve modules for 24 GB if more headroom is needed for additional services.

In-Memory Database
Small-scale in-memory databases like Redis or Memcached benefit from maximum capacity and ECC integrity. Fully populate all DIMM slots on a dual-socket system—for example, twelve identical 2 GB modules (two per channel across three channels per CPU) yielding 24 GB, adequate for test, development, or modest caching instances. For larger production datasets, consider migrating to higher-density UDIMMs or RDIMMs.

High-Performance Computing
To maximize memory bandwidth for HPC, install identical 2 GB modules in every memory channel. On a typical triple-channel architecture, populate at least one DIMM per channel, but ideally two per channel for six modules and 12 GB, ensuring balanced interleaving. This ECC configuration minimizes soft errors during long-running scientific simulations, though compute nodes with heavier memory footprints will require higher-capacity replacements.

Verified Compatibility

Rigorously tested, this server memory is compatible with Dell PowerEdge R210, T110; HPE ProLiant DL120 G6; Lenovo ThinkServer TS140.

FAQ

Q: Can I mix this MT18JSF25672AZ-1G4G1ZF with other memory modules of different brands or speeds?

A: Mixing ECC UDIMMs of different brands or speeds is strongly discouraged. It often causes system instability, ECC errors, or the memory may downclock to the slowest module, undermining the reliability required in server environments.

Q: Is this memory compatible with my server based on Intel Xeon or AMD platforms?

A: This DDR3-1333 ECC Unbuffered DIMM is compatible with Intel Xeon E3-1200 series, AMD Opteron 3000 series, and similar platforms using chipsets like C202/C204. Verify your motherboard's QVL for this specific 2GB, 1.5V, dual-rank module.

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

A: Consult your server board manual. Typically, populate the first slot of each memory channel (often blue slot furthest from CPU) with identical modules. This activates dual-channel mode and balanced ECC across ranks for maximum throughput.

Q: Does this module support overclocking or XMP profiles?

A: No, it does not support overclocking or XMP. This JEDEC-compliant server ECC memory operates strictly at DDR3-1333 with CL9 timings to guarantee data integrity and 24/7 operational stability, as overclocking would compromise error correction.

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

A: It includes a 1-year warranty. As an enterprise-grade UDIMM built with tier-1 DRAM, the typical AFR (Annualized Failure Rate) is under 0.5%, ensuring highly reliable long-term operation in demanding server workloads.

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