General

Engineer's Note

This Samsung 16GB DDR3-1600 RDIMM is engineered for enterprise server platforms, where its Registered signal type and ECC ensure data integrity and stable operation under heavy, multi-rank memory loads typical of virtualization and in-memory databases. The dual-rank x4 configuration, operating at 1.35V for improved energy efficiency, combined with CL11 latency, provides a cost-effective upgrade path for legacy systems demanding reliable, high-capacity memory scaling.

Technical Specs & Insights

1. ECC error correction automatically detects and fixes single-bit memory errors, preserving data integrity for mission-critical databases and financial transaction logs.
2. Registered signal buffering stabilizes high-capacity memory configurations by reducing the electrical load on the server’s memory controller, essential for populating all DIMM slots without sacrificing reliability.
3. Dual Rank x4 organization leverages rank interleaving to maximize bandwidth utilization, keeping memory channels fully saturated for consistent virtual machine performance under heavy consolidation.
4. A 16GB module density equips the server with substantial capacity per DIMM, allowing more virtual machines or large in-memory databases to coexist on a single physical host.
5. Operating at a low 1.35V significantly reduces per-module power draw, shrinking data center energy bills and lowering cooling demands in dense rack deployments.

Why These Specs Matter

The M393B2G70BH0-YK0Q8 is a 16GB DDR3 Registered ECC RDIMM built for servers. Its four key attributes address critical operational realities. ECC memory actively corrects single-bit errors on the fly, preventing silent data corruption that could bring down a hypervisor stack or produce erroneous financial calculations—making it mandatory for any virtualized cluster where uptime is revenue. The Registered buffer stabilizes signals when loading multiple DIMMs per channel, allowing you to pack high-density nodes without risking blue-screens or memory training failures. Operating at 1.35V instead of 1.5V, this module cuts power draw and heat, slashing cooling costs across a rack. Lastly, the Dual Rank x4 architecture employs rank interleaving to deliver up to 15% more bandwidth under concurrent workloads, which directly accelerates in-memory databases like SAP HANA or Redis by serving read requests with fewer idle cycles. For virtualization and in-memory databases, that means uncompromising stability and throughput.

Endurance & Reliability

General Virtualization
For a typical dual-socket virtualization host, populate all memory channels with an identical number of 16GB RDIMMs to maintain balanced interleaving and maximum throughput. A common configuration uses eight modules (128GB total) or sixteen modules (256GB total) per server, ensuring each CPU channel has at least one DIMM to avoid bandwidth bottlenecks while retaining room for future scaling. Leverage the module’s ECC and registered signalling to support large page tables and reliable multi-tenant workloads.

In-Memory Database
Maximize capacity by fully populating every available DIMM slot on the platform, often 24 or more modules, to keep entire datasets resident in RAM and minimize disk I/O. Using dual-rank x4 RDIMMs like this allows dense 384GB to 768GB footprints, and the 1.35V low-voltage operation helps reduce power draw in these sustained high-utilization environments. Maintain identical part numbers across all banks to avoid timing conflicts under heavy transactional loads.

High-Performance Computing
Balance modules equally across the CPU’s memory controllers, typically one 16GB DIMM per channel for a low-cost 128GB node or two per channel for 256GB to service large simulation meshes. The registered architecture and dual-rank design provide stable signal integrity at 1600MT/s, which is critical for the repetitive, floating-point heavy access patterns of HPC codes. Enable channel interleaving in the firmware to fully utilize the aggregated bandwidth.

Verified Compatibility

Rigorously tested, this DDR3 registered DIMM is validated for Dell PowerEdge R720, HP DL380p Gen8, Lenovo ThinkServer RD630.

FAQ