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Micron MT18JSF51272PZ-1G4D1BB 4GB DDR3-1333 RDIMM | Reliable ECC

MPN:MT18JSF51272PZ-1G4D1BB By:Micron Warranty:1 year
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General

Product TypeMemory Module
Compliance StandardsRoHS
Memory Capacity4 GB
Memory TechnologyDDR3
Product Voltage1.5V
RAM Speed1333MHz
RAM StandardDDR3-1333/PC3-10600
Error IdentifyingECC
Signal TypeRegistered
Column Access Strobe (CAS)CL9
RankSingle Rank x4
Quantity of Pins240-pin
RAM GenreRDIMM

Engineer's Note

This RDIMM with ECC and registered signal buffering ensures robust data integrity for virtualization and in-memory database workloads. Its Single Rank x4 organization with CL9 latency delivers stable, low-load memory access ideal for high-density server deployments requiring reliable 24/7 operation.

Technical Specs & Insights

1. ECC protection actively detects and corrects single-bit errors, safeguarding data integrity in always-on server environments where silent corruption can compromise financial or healthcare records.
2. Registered buffering reduces the electrical load on the memory controller, enabling large-scale server deployments to maintain signal stability across fully populated DIMM slots.
3. Single Rank x4 organization maximizes channel interleaving efficiency, delivering consistent memory bandwidth for virtualized workloads running under heavy consolidation.
4. DDR3-1333 throughput offers a proven balance of energy efficiency and reliable data transfer, keeping legacy enterprise platforms responsive without unexpected compatibility gaps.
5. The 4 GB capacity fits perfectly into dedicated caching or lightweight hypervisor appliances, allocating just enough resources for specialized server functions while preserving data access predictability.

Why These Specs Matter

In enterprise server environments, the Micron MT18JSF51272PZ-1G4D1BB RDIMM is engineered to eliminate the hidden risks that erode data center efficiency. Its ECC technology actively corrects single-bit errors caused by cosmic radiation, critical for financial transaction databases and in-memory analytics platforms where even one flipped bit can corrupt results. Registered buffering stabilizes signal integrity when multiple modules populate a server board, allowing dense virtualization clusters to scale memory up to hundreds of gigabytes without crashing under load. The DDR3-1333 speed at CL9 latency delivers balanced throughput, ensuring that real-time database queries and virtual machine page swaps execute with minimal delay. Additionally, the single-rank x4 construction reduces electrical loading on the memory bus, enhancing signal quality when running 24/7. For an IT manager overseeing a Hyper-V farm or a Redis cluster, this module translates directly into provable uptime and consistent query performance.

Endurance & Reliability

General Virtualization
For lightweight hypervisors hosting 4-6 VMs per node, populate six to eight of these 4 GB RDIMMs across three memory channels per socket to reach 24 GB or 32 GB, balancing density and cost. Leave at least one DIMM slot free per channel to preserve upgrade headroom for growing VM fleets. Always install registered ECC modules in identical channel-matched sets to maintain stable memory interleaving and error resilience under consolidation workloads.

In-Memory Database
Datasets smaller than 64 GB suit sixteen of these 4 GB RDIMMs spread evenly across two sockets, yielding 64 GB of mirrored, reliable capacity for Redis or Memcached clusters. Configure one DIMM per channel (1DPC) at DDR3-1333 to minimize electrical loading and sustain CL9 latency under heavy key-value traffic. Paired with memory-node affinity settings, this avoids swap storms and keeps sub-millisecond response times.

High-Performance Computing
Scale memory bandwidth for MPI or simulation codes by fully populating all channels with two DIMMs per channel (2DPC), using a minimum of twelve 4 GB modules per dual-socket node for 48 GB. Dual-rank alternatives are absent here, so single-rank x4 RDIMMs must be installed in balanced groups to leverage 1333 MT/s throughput without rank contention. Prioritize identical part numbers across all sockets; a uniform population avoids clock skew and maximizes floating-point throughput per core.

Verified Compatibility

Validated server memory: rigorously tested, compatible with Dell PowerEdge R710, HP DL380 G7, IBM x3650 M3, etc.

FAQ

Q: Can I mix this MT18JSF51272PZ-1G4D1BB with other memory modules of different brands or speeds?

A: Mixing RDIMMs of different brands or speeds is not advised. It often leads to stability issues, forced downclocking, or incompatibility. Use identical modules for guaranteed reliable server operation.

Q: Is this memory compatible with my system?

A: This is a DDR3-1333 Registered ECC RDIMM. It is designed for server platforms using Intel Xeon 5500/5600 series or AMD Opteron 6100/6200 series. Verify your motherboard supports 1.5V registered memory.

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

A: Follow your server board's manual. Generally, populate the slots furthest from the CPU per channel first, then fill symmetrically across channels. This ensures balanced load and full memory bandwidth.

Q: Does this module support overclocking or XMP profiles?

A: No. This is a server-grade Registered ECC module running at JEDEC standard DDR3-1333 CL9. It does not support XMP profiles or overclocking features, as server platforms prioritize data integrity.

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

A: This module is covered by a one-year warranty. Enterprise-class RDIMMs have extremely low failure rates, typically an annualized failure rate (AFR) well below 0.5% under specified conditions.

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