General

Engineer's Note

Designed as a legacy server-grade RDIMM, the M393T5750CZA-CE6 leverages registered signal buffering and ECC to ensure data integrity under sustained mission-critical loads. Its dual-rank x4 organization and low CL5 latency on the DDR2-667 interface make it well-suited for stabilizing aging virtualization hosts or memory-resident database appliances where reliability takes precedence over throughput.

Technical Specs & Insights

1. ECC protection silently detects and corrects single-bit memory errors, preserving data integrity for mission-critical databases and virtualization hosts running uninterrupted for months.

2. The registered signal type buffers command and address buses, allowing the server to support high-capacity memory configurations without compromising electrical stability under full load.

3. Dual rank x4 organization enables rank interleaving that boosts effective bandwidth, keeping throughput smooth when multiple virtual machines contend for memory access simultaneously.

4. A 2 GB module density provides a fine-grained capacity stepping for consolidating moderate server workloads, reducing stranded memory and optimizing cost per gigabyte in scale-out deployments.

5. 667 MT/s transfer rate aligns with the consistent front-side bus speed of legacy enterprise systems, delivering predictable latency and steady throughput for stable application service delivery.

Why These Specs Matter

When managing mission-critical enterprise workloads like dense virtualization clusters and in-memory databases, even a single undetected bit error can cascade into application failure or data corruption. The Samsung M393T5750CZA-CE6 is engineered to eliminate that risk. As a registered ECC DDR2 RDIMM, its Error-Correcting Code technology continuously scans and corrects single-bit memory faults caused by cosmic radiation or electrical noise—something unbuffered desktop memory simply cannot do. In a VMware or Hyper‑V host running dozens of virtual machines, that means preventing unexpected crashes during overnight database transactions. The registered signal buffer on every address and command line stabilizes signal integrity when populating all memory slots, allowing you to scale capacity with Dual Rank x4 organization for increased memory density without sacrificing reliability. For a high-throughput Redis or Memcached instance, this dual‑rank design interleaves access across internal banks, reducing latency spikes under concurrent user loads. Even at 667 MHz with a CAS latency of 5, the 240‑pin module delivers predictable, validated performance on legacy enterprise servers, letting you extend the life of installed infrastructure while maintaining the deterministic uptime your SLA demands.

Endurance & Reliability

This module (M393T5750CZA-CE6) is a 2GB DDR2-667 Registered ECC RDIMM, placing it squarely in the legacy server memory category. Capacity planning for such DDR2-based servers requires careful attention to channel balancing, rank count, and maximum slot population under the constraints of older chipsets.

General Virtualization
Enable channel interleaving and stable VM density by installing identical modules in matched sets. Populate at least four DIMMs per processor (8 GB total on a typical dual-socket host) to form symmetric channels, which improves memory throughput for multiple lightweight guests. Always use validated ECC Registered DIMMs of the same revision to guarantee signal integrity under continuous uptime.

In-Memory Database
Maximize dataset residency by filling every available memory slot. A fully populated 16-slot legacy server can reach 32 GB, which is minimal but functional for small caching or embedded database instances. Keep in mind that four dual-rank DIMMs per channel may force a speed reduction to DDR2-533; accept the capacity-over-frequency trade-off when the working set demands more RAM.

High-Performance Computing
Sustain high bandwidth under parallel MPI workloads with a balanced memory layout. Mount four or eight identical DIMMs per node, evenly distributed across channels, so each core sees uniform latency. Dual-rank x4 configurations offer a strong combination of bandwidth and rank interleaving; avoid mixing single-rank and dual-rank modules to prevent performance anomalies that compromise tightly coupled HPC jobs.

Verified Compatibility

Compatible with servers like Dell PowerEdge 2950, HP ProLiant DL380 G5, and IBM System x3650—fully tested for reliable performance.

FAQ