General

Engineer's Note

This Samsung 8GB DDR3-1333 Registered ECC RDIMM is purpose‑built for legacy server platforms, where its Dual Rank x4 organization improves memory bank interleaving and sustained bandwidth under heavy virtualized or in‑memory database workloads. The registered architecture stabilizes command/address signals across fully populated channels and the integrated ECC corrects single‑bit errors in real time, safeguarding data integrity for mission‑critical enterprise operations.

Technical Specs & Insights

1. ECC protection detects and corrects single-bit errors on the fly, eliminating silent data corruption that could otherwise crash critical enterprise workloads during multi-year uptime runs.
2. Registered signal buffering stabilizes the command and address lines, allowing fully populated server channels to scale memory capacity without sacrificing signal integrity.
3. Dual Rank x4 organization leverages parallel access across internal banks, maximizing memory-level parallelism for sustained bandwidth when hosting dense virtualization clusters.
4. The per-module capacity hits the sweet spot for budget-conscious cloud nodes, packing enough memory for numerous lightweight containers or VMs while keeping cost per core optimized.
5. This mainstream DDR3 speed grade supplies consistent, deterministic latency and throughput, perfectly matching the needs of legacy database servers where stability trumps peak frequency.

Why These Specs Matter

The Samsung M393B1K70CH0-CH9Q5-H is a registered ECC DDR3 RDIMM purpose-built for enterprise servers, where data integrity and uninterrupted operation aren’t just preferences—they are absolute requirements. Its four defining characteristics directly address the most critical pain points of data center environments.

First, the Error Correcting Code (ECC) functionality detects and corrects single-bit memory errors caused by transient cosmic radiation or electrical noise. In an in-memory database like SAP HANA or a virtualized trading platform, a silent bit-flip can corrupt a financial transaction or crash an entire VM instance; ECC eliminates that risk by ensuring every bit of data is exactly as written.

Second, the registered signal buffering stabilizes the command and address lines. When a server is fully populated with DIMMs to support massive virtualization clusters, the electrical load can degrade signal integrity. The on-board register isolates the memory controller from this load, enabling you to pack 192GB or more per server without sacrificing reliability—crucial for hosting dozens of virtual machines on a single physical host.

Third, the dual-rank x4 organization boosts concurrency through rank interleaving. While one rank performs a refresh cycle, the other remains accessible, effectively hiding latency. This translates into higher sustained throughput for mixed workloads; a hypervisor managing multiple database VMs experiences significantly fewer memory-access collisions and more predictable performance under load.

Finally, the CL9 latency at 1333MHz strikes an optimal balance between fast response times and the power efficiency of a proven 1.5V node. For OLTP databases processing thousands of queries per second, this low column access strobe delay means faster data retrieval and smoother transaction commits. Together, these features transform a simple memory module into a foundation for zero-downtime, high-density server infrastructure.

Endurance & Reliability

General Virtualization
For a typical hypervisor hosting multiple VMs, populate at least six of these 8GB RDIMMs (48GB total) to achieve a balanced memory-to-core ratio. Deploy modules in identical sets across memory channels to enable lockstep or rank sparing, which preserves data integrity under mixed workloads.

In-Memory Database
Latency-sensitive platforms like Redis or SAP HANA require maximum capacity and redundancy. Install a full population of 12 or more modules (96GB+) to hold entire datasets in RAM. Use dual-rank x4 DIMMs in a clustered configuration to sustain high throughput while the registered ECC logic corrects single-bit errors without halting operations.

HPC
For compute-bound simulation clusters, prioritize channel balance over raw capacity. Fill all available channels with matched 8GB RDIMMs (e.g., 8 modules totaling 64GB) to deliver the 1333MT/s bandwidth at CL9. The registered buffer stabilizes signal integrity across the many ranks, maintaining deterministic performance during large-scale parallel job execution.

Verified Compatibility

Strictly tested, compatible with Dell PowerEdge R710, HP DL380 G7, IBM System x3650 M3.

FAQ