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Samsung M393T5160QZA-CE6 4GB DDR2 RDIMM 667MT/s | Reliable ECC RDIMM

MPN:M393T5160QZA-CE6 By:Samsung Warranty:1 year
US$65 - $70
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General

ModelM393T5160QZA-CE6
Compliance StandardsEU RoHS,FCC
Product TypeMemory Module
Memory Capacity4 GB
Memory TechnologyDDR2
Product Voltage1.8V
RAM Speed667MHz
RAM StandardDDR2-667/PC2-5300
Error IdentifyingECC
Signal TypeRegistered
Column Access Strobe (CAS)CL5
RankDual Rank x4
Quantity of Pins240-pin
RAM GenreRDIMM

Engineer's Note

Designed for legacy server platforms requiring high data integrity, this Samsung M393T5160QZA-CE6 DDR2-667 Registered DIMM leverages ECC and a registered signal type to ensure stable operation in memory-intensive virtualization and database workloads. Its dual-rank x4 organization and CL5 latency provide balanced bandwidth and reliable command/address buffering, making it an optimal drop-in upgrade for aging 240-pin rack-mount servers where uncorrected errors are unacceptable.

Technical Specs & Insights

1. ECC error correction continuously detects and fixes memory errors, preserving data integrity in long-running financial or database applications where even single-bit corruption is unacceptable.

2. Registered signal buffering scales memory capacity by supporting high per-channel DIMM counts, directly enabling denser virtual machine consolidation without signal degradation.

3. Dual Rank x4 organization interleaves accesses across internal banks, sustaining peak channel bandwidth to keep latency-sensitive enterprise workloads responsive during concurrent operations.

4. The 4 GB capacity offers a dependable, cost-optimized footprint for provisioning containers and lightweight services in legacy server refresh or spare maintenance strategies.

5. 667 MHz operating speed provides stable, validated throughput that aligns with older platform compatibility, reducing unexpected downtime from timing mismatches in homogeneous data center deployments.

Why These Specs Matter

In enterprise environments where uptime and data integrity are non-negotiable, the M393T5160QZA-CE6 DDR2-667 Registered ECC DIMM directly addresses the hidden risks that can cripple legacy server infrastructure. Its ECC technology continuously detects and corrects single-bit memory errors caused by background radiation or electrical noise—silent data corruption that, without correction, could corrupt financial transaction logs or produce inaccurate results in a scientific computing run. For a virtualized cluster hosting multiple legacy applications on VMware ESX or older Hyper-V, the registered signal buffer stabilizes command and address lines across fully populated memory banks, allowing you to install all available DIMM slots without signal degradation—this means scaling up to maximum supported capacity for heavier guest loads rather than trading reliability for density. In an in-memory caching tier or a small Redis database where latency is critical, the dual-rank x4 organization enables rank interleaving, overlapping read/write cycles to boost sustained throughput and reduce the access gaps that stall transaction processing. Together, these features turn a simple 4 GB module into a foundation for consistent, predictable performance: your database replication stream stays free of bit-flip-induced inconsistencies, and your virtual machines avoid sudden, unexplained crashes that lead to costly after-hours troubleshooting. For the IT manager maintaining a stable legacy platform, this DIMM means fewer silent threats, longer node life, and confidence that every stored query and user session remains verified and intact.

Endurance & Reliability

Server Memory Type Identified: DDR2 ECC Registered RDIMM (Legacy/Value Segment)

General Virtualization
For lightweight or legacy hypervisors, start with a minimum of 4 modules (16GB total) to create a balanced quad-channel population. Each 4GB RDIMM provides modest VM density—sufficient for 3–5 small VMs. In systems with many slots, deploy eight identical modules in a balanced interleaved configuration to maximize memory bandwidth and maintain error correction across all populated channels.

In-Memory Database
In-memory datasets quickly outgrow a single 4GB DIMM. Fully populate every available memory channel with eight modules (32GB total) to reduce swap pressure. Because this is registered DDR2 at 667MHz, prioritize quantity over speed—fill all ranks symmetrically. For production reliability, never mix ECC and non-ECC memory, and use identical part numbers to avoid subtle timing mismatches that can corrupt data integrity.

High Performance Computing (HPC)
HPC clusters built on legacy nodes benefit from maximum bandwidth configurations: install six or eight identical modules, respecting the motherboard’s population guide to enable dual‑rank interleaving. The dual‑rank x4 organization already improves command‑rate efficiency; populate at least two DIMMs per channel where supported to sustain streaming memory access patterns. Given the 4GB limit per stick, scale node‑wise rather than trying to cram large capacity into one box.

Verified Compatibility

Rigorously tested and compatible with servers like Dell PowerEdge 2950, HP ProLiant DL380 G5, and IBM System x3650.

FAQ

Q: Can I mix this M393T5160QZA-CE6 with other memory modules of different brands or speeds?

A: Mixing Registered ECC modules of different brands or speeds is not recommended. It may cause signal integrity issues, forcing the entire memory bus to the lowest common specification and risking system instability.

Q: Is this memory compatible with my Intel or AMD server platform?

A: This DDR2 Registered ECC RDIMM is designed for servers using chipsets like Intel 5000/5400 series or equivalent AMD platforms supporting 667MHz Registered memory. Please verify your motherboard's memory QVL for specific compatibility.

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

A: Populate identical kits per memory channel, starting with the slots farthest from the CPU. For dual-rank RDIMMs, follow your server board manual to balance ranks across channels and maintain interleaved access.

Q: Does this module support overclocking or XMP profiles?

A: No. As a server-grade Registered ECC DIMM, this module adheres strictly to JEDEC DDR2-667 standards. Overclocking and XMP are not supported to ensure 24/7 error-free stability.

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

A: This module comes with a 1-year warranty. Enterprise-class Registered ECC memory is built for rigorous workloads, exhibiting an extremely low annualized failure rate (AFR) under proper cooling conditions.

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