General

Engineer's Note

Optimized for server platforms, this 8GB DDR3-1333 VLP RDIMM is ideally suited for memory-intensive workloads such as virtualization and in-memory databases, delivering robust data integrity through registered ECC and enhanced signal stability. Its dual-rank x4 organization and low 1.35V operating voltage provide efficient memory bandwidth while minimizing power consumption in dense rack deployments.

Technical Specs & Insights

1. ECC protection detects and corrects single-bit errors in real time, preserving data integrity for financial transactions and database operations where memory faults cannot be tolerated.

2. Registered signal type buffers command and address lines, enabling fully populated multi-DIMM configurations that maximize total memory capacity for dense virtualization hosts.

3. VLP RDIMM form factor minimizes module height, improving airflow and clearance in compact 1U rack servers where every millimeter of space impacts thermal efficiency.

4. Dual Rank x4 organization interleaves memory accesses across two internal ranks per module, sustaining higher bandwidth utilization under simultaneous query loads from multiple virtual machines.

5. 1.35V low-voltage operation reduces overall power draw and heat output in large-scale server farms, cutting cooling costs while maintaining reliable DDR3-1333 throughput.

Why These Specs Matter

The M392B1K70DM0-YH9 is a server-class DDR3 VLP RDIMM, and its engineering directly addresses the unforgiving demands of data center environments. In a virtualized cluster running dozens of VMs on a single host, an undetected single-bit error in memory can silently corrupt hypervisor state or guest data, leading to cascading failures. The module’s ECC technology actively detects and corrects such errors, turning a potential outage into a non-event and directly preserving service continuity. Equally critical, the Registered buffer stabilizes signal integrity when populating all memory channels across multiple CPUs, ensuring that large-scale VM density or in-memory databases like Redis can scale to hundreds of gigabytes without the boot failures or instability that plague unbuffered modules.

Beyond reliability, the 1.35V low-voltage operation significantly reduces thermal dissipation, which is essential when rows of these modules are packed into dense rack servers with constrained airflow. The dual-rank x4 organization further boosts real-world throughput by enabling rank interleaving, lowering memory latency for streaming analytics and OLTP workloads. Finally, the Very Low Profile (VLP) form factor eliminates physical conflicts with bulky CPU coolers in 1U and 2U chassis, simplifying installation in tightly integrated storage appliances where every millimeter counts. This memory transforms a fragile, basic server build into a robust, enterprise-ready platform.

Endurance & Reliability

Server Memory Identification
This module’s ECC, Registered signal, and VLP (Very Low Profile) form factor clearly mark it as server-class memory. It is a DDR3-1333 8GB RDIMM operating at 1.35V, ideal for dense rack servers and blade systems where power efficiency and reliability are paramount.

General Virtualization
For a dual-socket host running multiple VMs, populate all memory channels identically to maximize bandwidth. A balanced 12-module configuration (96GB total) using six modules per CPU provides ample headroom for 15–25 typical VMs. Scale to 16 modules (128GB) if overcommitment ratios are kept low.

In-Memory Database
Latency-sensitive in-memory databases demand large, contiguous capacity. Deploy six banks of three modules per socket (18 x 8GB = 144GB) or fill all 24 DIMM slots for 192GB. This allows entire datasets to reside in RAM, minimizing storage I/O. Ensure identical module placement across NUMA nodes to avoid performance skew.

High-Performance Computing
HPC workloads prioritize bandwidth over capacity. Install a single DIMM per channel configuration – one module in each blue slot of a three-channel platform (3 x 8GB per CPU) – to achieve maximum 1333MT/s speed and lowest latency. Use dual-rank x4 modules like this one to sustain high throughput during sustained parallel calculations.

Verified Compatibility

Validated server memory: compatible with Dell PowerEdge R720, R620, HP DL380p Gen8, and more.

FAQ