General

Engineer's Note

Designed for legacy server platforms requiring DDR2-667 Registered ECC memory, this Samsung M393T5750CZA-CE6Q0 RDIMM is ideally suited for memory-intensive, mission-critical workloads such as virtualization, in-memory databases, and data integrity-sensitive applications. Its dual-rank x4 configuration with CL5 latency and registered signal architecture delivers stable, reliable operation under full population, while integrated ECC corrects single-bit errors to ensure data integrity in always-on enterprise environments.

Technical Specs & Insights

1. ECC protection detects and corrects single-bit errors on the fly, preserving data integrity for mission-critical databases and financial transaction servers where even silent corruption is unacceptable.
2. Registered signaling buffers command and address lines, allowing dense memory configurations across many DIMM slots to support heavy virtualization workloads without sacrificing signal stability.
3. Dual Rank x4 organization interleaves internal bank accesses, sustaining channel utilization that keeps multiple virtual machines responsive and throughput steady under consolidated loads.
4. 667 MHz clock speed provides a dependable 5.3 GB/s per channel, matching the bandwidth needs of legacy enterprise servers running latency-sensitive messaging and caching services.
5. CL5 column access strobe shortens read latency, tightening response times for cache-dependent server processes and improving overall transaction throughput in request-heavy environments.

Why These Specs Matter

When managing virtualized clusters and in-memory databases, Samsung M393T5750CZA-CE6Q0, a 2GB DDR2-667 RDIMM, delivers four capabilities that directly prevent costly failures. First, ECC memory corrects single-bit errors caused by background radiation, stopping silent data corruption inside financial ledgers or hypervisor states where a flipped bit could crash dozens of virtual machines. Second, the Registered buffer stabilizes address and command signals across high-density configurations, so fully populating all DIMM slots to maximize capacity won't degrade signal integrity as your VM density scales. Third, its Dual Rank x4 design enables rank interleaving: the memory controller accesses one rank while another precharges, effectively boosting sustained bandwidth and lowering read latency for latency-critical workloads like Redis or Memcached. Finally, a consistent 1.8V operating voltage and CL5 latency deliver predictable thermal behavior and response times under 24/7 operation. In your resilient but aging infrastructure, this module translates directly to preserved data fidelity, extended uptime, and the ability to postpone a full platform migration.

Endurance & Reliability

Capacity Planning Guide for M393T5750CZA-CE6Q0 (2GB DDR2-667 ECC Registered RDIMM)

General Virtualization
Virtualization demands ample capacity and reliability. Populate all memory channels symmetrically with at least eight 2GB modules (16GB) to host multiple VMs comfortably. Enable memory mirroring for fault tolerance or sparing to enhance uptime, and stick to identical dual-rank x4 DIMMs for consistent performance.

In-Memory Database
Low latency and large capacity are critical. Fully populate the server with up to 16 modules (32GB) to keep datasets resident. Leverage the dual-rank x4 design to enable rank interleaving, which reduces access latency. Configure the memory controller for optimal row-hammer thresholds if supported.

High-Performance Computing (HPC)
Memory bandwidth is paramount. Install modules in balanced sets (e.g., 4 or 8 DIMMs) across all available channels and configure channel interleaving. Use an even number of ranks per channel to avoid bandwidth cliffs; this 2GB RDIMM’s x4 organization supports efficient stream throughput in dual-rank mode.

Verified Compatibility

Rigorously tested for servers: compatible with Dell PowerEdge 1950/2950/2900, HP ProLiant DL380 G5, IBM x3650.

FAQ