General

Engineer's Note

This DDR3-1600 registered ECC RDIMM is purpose-built for enterprise servers and virtualization platforms, delivering critical data integrity for memory-intensive workloads like in-memory databases and large-scale consolidation. Its dual-rank x4 construction combined with registered buffering ensures superior signal stability and increased capacity scalability while the low 1.35V operating voltage reduces thermal load and power consumption in dense deployments.

Technical Specs & Insights

1. ECC error correction actively detects and fixes single-bit memory faults, safeguarding transactional databases and financial processing from silent data corruption in always-on server environments.
2. Registered signal type buffers the command and address buses, which preserves signal integrity and enables densely packed server boards to populate all DIMM slots without stability trade-offs.
3. Dual Rank x4 organization multiplies bank-level parallelism, fully saturating the memory channel to deliver steady low-latency throughput for heavy virtualization and container consolidation.
4. An 8 GB capacity per module provides an efficient building block for entry-level virtualization hosts, balancing adequate VM density with cost-conscious scaling in web and light application tiers.
5. Operating at just 1.35 V, this low-voltage design cuts per-DIMM energy draw and thermal output, directly lowering cooling overhead and power bills across large-scale data center fleets.

Why These Specs Matter

The Samsung M393B1K70QB0-YK009 is a DDR3 registered ECC memory module purpose-built for enterprise server platforms, and its four defining characteristics address critical real-world infrastructure challenges. First, ECC error correction actively detects and fixes single-bit errors, preventing silent data corruption that could otherwise destabilize a virtualization host or silently skew results in an in-memory database like SAP HANA. Second, the registered buffer preserves command and address signal integrity when all memory channels are fully populated, allowing you to confidently scale a dual-socket server to 512 GB or more to support dozens of virtual machines without risking unexplained crashes. Third, 1.35 V low-voltage operation cuts power draw by roughly 20 percent versus standard 1.5 V DDR3, directly reducing cooling costs and extending the service life of embedded power supplies in dense data center racks. Fourth, the Dual Rank x4 organization exploits bank interleaving by presenting two ranks of x4‑width DRAMs, which increases the number of simultaneously open pages and boosts effective bandwidth under heavy parallel access. In a VMware hypervisor farm, that translates to more vCPUs hitting memory without stutter; in a Redis or Memcached cluster, it delivers higher cache-hit throughput and consistently low latency. Together, these four features ensure data integrity, massive scalability, energy efficiency, and the parallel throughput demanded by mission‑critical workloads.

Endurance & Reliability

This is a server-grade DDR3 Registered ECC memory module (RDIMM). For capacity planning with these 8GB modules, align population rules to platform memory channels and target workloads.

General Virtualization
Balance capacity and cost by populating one DIMM per memory channel. In a typical dual-socket server with three or four channels per CPU, install six or eight identical 8GB modules for a total of 48–64 GB. This configuration provides enough headroom for moderate VM density while maintaining multi-channel interleaving and error correction.

In-Memory Database
Maximize total capacity to keep entire datasets resident. Fill all available DIMM slots on both processor memory risers using identical 8GB RDIMMs – for example, 16 modules yielding 128 GB in a two-socket platform. Symmetric population across sockets and channels avoids performance penalties and sustains registered ECC reliability under heavy write loads.

High-Performance Computing
Prioritize memory bandwidth per core. Install one 8GB DIMM per channel on all channels to achieve maximum parallel access. A common HPC node config uses eight modules (64 GB) evenly split across two CPUs with four channels each. Stick to the uniform 1600MHz speed, populate identically, and avoid mixing ranks or capacities to prevent clock-down of the memory bus.

Verified Compatibility

Validated for Dell PowerEdge R720/R620, HP DL380p Gen8, this 8GB DDR3 ECC Registered RDIMM guarantees reliable performance.

FAQ