General

Engineer's Note

This is a server-class 2 GB DDR2-667 FB-DIMM with ECC, purpose-built for legacy enterprise servers and workstations requiring fully buffered memory to support memory-intensive workloads such as virtualization and in-memory databases. Its fully buffered signal architecture ensures robust signal integrity across multi-channel configurations, while the dual-rank x4 organization and CL5 latency optimize data throughput and reliability in mission-critical environments.

Technical Specs & Insights

1. ECC protection silently corrects single-bit memory faults, ensuring uncompromised data integrity for financial databases and mission-critical transactions.
2. Fully Buffered architecture isolates the memory controller from electrical loading, allowing denser module populations and improved signal reliability in multi-socket servers.
3. Dual Rank x4 interleaving keeps the memory pipeline saturated, delivering dependable bandwidth when hosting multiple virtual machines under consolidation.
4. The module’s capacity provides a cost-optimized memory footprint for dedicated appliance servers and lightweight containerized workloads, balancing density and power.
5. 667 MHz clock speed supplies stable legacy throughput, keeping response times predictable for concurrent web serving and directory authentication requests.

Why These Specs Matter

The MT36HTF25672FY-667F1N6 is a server FB-DIMM engineered for mission-critical workloads. In a virtualized cluster, its ECC protection is your frontline defense against silent data corruption. A single uncorrected bit flip can crash a host running dozens of VMs, but ECC detects and fixes those errors on the fly, preserving uptime. Its Fully Buffered design with an Advanced Memory Buffer transforms memory signaling into a robust serial link, allowing you to fully populate banks with stable signal quality—essential when scaling beyond 32GB for large VMware ESXi farms or Redis in-memory databases. The Dual Rank x4 organization further enhances concurrency; the memory controller can interleave requests between ranks, minimizing access latency during heavy transaction spikes. Meanwhile, the conservative DDR2-667 speed and CL5 timing deliver predictable performance under continuous 24/7 load, ensuring your database queries return consistent results without timing variability. For a data center, this module means less troubleshooting and more trust in your infrastructure.

Endurance & Reliability

Server Memory Identified: This is a Fully Buffered DDR2 ECC DIMM (FB-DIMM), designed exclusively for legacy server platforms that require high memory reliability and multi-channel architectures.

General Virtualization
For lightweight virtualization on older platforms, populate a minimum of 8 identical modules (16 GB) across all memory channels to maintain balanced interleaving. Given the 2 GB capacity per stick, aim for 16–32 GB total by filling two DIMMs per channel if the board supports it, ensuring ECC guards against data corruption for multiple guest VMs.

In-Memory Database
In-memory databases demand both capacity and fault tolerance; deploy fully populated risers with 2 GB FB-DIMMs to reach the maximum supported RAM (often 64–128 GB on dual-socket servers). Always install modules in matched quads for quad-channel operation, and enable memory mirroring or sparing in the BIOS to sustain real-time transactional integrity.

High-Performance Computing (HPC)
HPC workloads benefit from consistent latency and peak bandwidth, so install an equal number of DIMMs per memory branch (typically 4 or 8 per node) to maximize parallel access. Use all available channels with dual-rank x4 modules to exploit chip-kill ECC, which is critical when a single DRAM failure could corrupt a long-running simulation.

Verified Compatibility

This server memory has been rigorously tested and is compatible with Dell PowerEdge 2950, HP DL380 G5, IBM x3650.

FAQ