General

Engineer's Note

Designed as a VLP Registered DIMM with ECC, this 16GB DDR3-1866 module is purpose-built for dense server environments, delivering robust data integrity and signal stability under the high-memory-load conditions typical of virtualization clusters and in-memory databases. Its dual-rank x4 organization and low 1.5V operating voltage combine to offer a competent balance of capacity and power efficiency, making it an ideal drop-in upgrade for legacy 1U/2U rack servers and blade systems still reliant on the DDR3 ecosystem.

Technical Specs & Insights

1. ECC protection automatically detects and corrects single-bit errors, preserving data integrity in mission-critical enterprise applications where even silent corruption is unacceptable.
2. Registered signal buffering stabilizes command and address lines across fully populated server boards, enabling dense memory configurations without compromising signal quality.
3. VLP RDIMM form factor reduces module height to fit 1U and blade server chassis, allowing superior thermal airflow and higher compute density in space-constrained racks.
4. Dual Rank x4 organization interleaves memory accesses across internal banks, maximizing sustained bandwidth utilization under heavy virtualization and database workloads.
5. 1866MHz clock speed delivers higher throughput per channel, directly accelerating in-memory analytics and reducing latency for large-scale transactional processing.

Why These Specs Matter

In enterprise data centers, the Samsung M392B2G70DM0-CMA is a purpose-built DDR3 VLP RDIMM tailored for server environments, not desktops. Its four key attributes tackle real-world IT pain points. First, ECC memory corrects single-bit errors from background radiation or noise, ensuring data integrity. For an in-memory database like Redis, this prevents silent corruption that could crash critical transactions. Second, the Registered buffer lowers the electrical load on the CPU’s memory controller, allowing you to fully populate all channels while maintaining rock-solid stability—essential when running dozens of VMs on a hypervisor. Third, the dual-rank x4 configuration interleaves memory banks to increase bandwidth and reduce latency. You experience this as responsive virtual machines and faster query processing under concurrent workloads. Finally, the Very Low Profile design measures just 18.8mm tall, optimizing airflow in dense 1U servers and blades. This mitigates thermal throttling, so the 1866MHz speed and CL13 timings remain reliable 24/7.

Endurance & Reliability

General Virtualization
Populate all memory channels per CPU with identical 16 GB RDIMMs to balance capacity and bandwidth. In a dual‑socket server, install 8 to 12 modules for 128–192 GB, comfortably supporting dozens of virtual machines and preventing hypervisor swapping.

In‑Memory Database
Maximize total capacity by fully populating every DIMM slot with these 16 GB modules, reaching 256–384 GB on a dual‑processor board. Use matched RDIMMs and enable memory interleaving to guarantee low‑latency access for demanding, cache‑sized datasets.

HPC
Deploy a symmetric quad‑channel layout with 4 or 8 modules per CPU to deliver the bandwidth that parallel simulations require. The 1866 MT/s speed and CL13 latency suit memory‑bound workloads, while the VLP form factor allows dense blade‑node builds where rack space and airflow are critical.

Verified Compatibility

Rigorously tested and validated for server compatibility with Dell PowerEdge R720, HP DL380p Gen8, and Lenovo System x3650 M4.

FAQ