General

Engineer's Note

This DDR3-1333 registered ECC module with VLP form factor is purpose-built for legacy server platforms requiring maximum memory density in space-constrained chassis, making it ideal for virtualization hosts and small-scale in-memory databases. Its single-rank x4 organization with CL9 latency and 1.35V low-voltage operation ensures stable power delivery and reduced thermal load, while registered signaling and ECC provide the data integrity and signal clean-up necessary for 24/7 mission-critical operation.

Technical Specs & Insights

1. ECC memory detects and corrects single-bit errors on the fly, preserving transactional integrity in database servers and eliminating silent data corruption that could otherwise crash critical workloads.
2. Registered signal buffering strengthens command and address line stability, allowing fully populated memory channels across 24+ DIMM slots to support massive virtualization footprints without signal degradation.
3. The VLP (Very Low Profile) form factor reduces module height to 18.75mm, clearing airflow paths in dense 1U nodes and blade chassis so that high-TDP processors stay within thermal limits under sustained load.
4. 1.35V low-voltage operation trims power draw per DIMM, aggregating into meaningful OpEx savings for scale-out data centers where thousands of modules need to balance energy efficiency with consistent 1333MHz throughput.
5. An 8 GB capacity per module provides a cost-effective building block for memory-heavy virtualized environments, letting IT architects reach 192 GB or more per server to maximize VM density without exhausting budget or DIMM slots.

Why These Specs Matter

When deploying dense virtualization clusters or in-memory databases, the Samsung M392B1G70BH0-YH9 isn’t just memory—it’s your last line of defense against silent data corruption and unplanned downtime. As an 8GB DDR3 VLP RDIMM, it’s purpose-built for server environments where data integrity and capacity scaling are paramount. First, its Error Correcting Code (ECC) actively detects and corrects single-bit flips caused by cosmic radiation or electrical noise. In a 24/7 transactional database, this means a stray bit error won’t silently cascade into a financial discrepancy or a corrupt guest VM. Second, the Registered (buffered) architecture stabilizes high-density configurations, allowing you to populate all 24 DIMM slots without signal degradation—critical when you need 192GB of reliable RAM per host to pack in more virtual machines. Third, the 1.35V ultra-low voltage operation directly lowers every watt of power and BTU of heat in a 500-node cluster; over a deployment lifecycle, that translates into substantial cooling savings and a smaller carbon footprint. Finally, the Very Low Profile (VLP) form factor ingeniously reclaims clearance in cramped 1U rack servers and blade enclosures, restoring proper airflow so your near-CPU components stay below their throttling threshold. Paired with a Single Rank x4 organization and CL9 latency, this module delivers consistent, predictable performance for latency-sensitive caching engines like Redis, where a microsecond of jitter can degrade user-facing response times. In essence, it transforms your server from a transactional risk into a fortress of uptime and efficiency.

Endurance & Reliability

Server Memory Identified: DDR3 Registered ECC VLP RDIMM

This Samsung M392B1G70BH0-YH9 module is a DDR3-1333 Registered DIMM with ECC, low voltage (1.35V), and very low profile form factor. It is designed for dense server environments where reliability and power efficiency are critical. Capacity planning for this 8GB module must align with legacy DDR3 platforms still serving stable workloads.

General Virtualization
In a dual-socket server with 24 DIMM slots, populate at least 12 identical 8GB modules (96GB total) to enable balanced memory interleaving and NUMA optimization for a moderate VM density. Plan for 4–6 GB per virtual machine, leaving headroom for hypervisor overhead.

In-Memory Database
For Redis or Memcached clusters, maximize capacity per node by fully populating all channels with identical 8GB RDIMMs. A tri-channel platform with 18 slots can deliver 144GB, allowing large datasets to reside entirely in RAM. Avoid mixing single-rank and dual-rank modules to maintain consistent latency.

High-Performance Computing
HPC workloads sensitive to memory bandwidth benefit from populating one DIMM per channel to achieve maximum speed without rank thinning. Configure three 8GB modules per processor (24GB) in a triple-channel layout, then scale horizontally across nodes rather than using oversized single-node capacity to preserve memory clock stability.

Verified Compatibility

Rigorously tested server RDIMM for Dell R720/R620, HP DL380p G8.

FAQ