General

Engineer's Note

This 16GB DDR3-1866 RDIMM targets legacy enterprise servers and workstations, delivering registered signal stability and ECC protection for virtualization, in-memory databases, and other data-critical workloads. Its dual-rank x4 configuration enhances memory interleaving efficiency and sustained bandwidth, while the CL13 latency ensures fast access under heavy multi-threaded demand.

Technical Specs & Insights

1. ECC protection seamlessly detects and corrects single-bit memory errors, safeguarding transactional data integrity in mission-critical database and financial workloads.
2. Registered signal buffering stabilizes high-density server configurations by reducing electrical load on the memory controller, enabling reliable operation across fully populated 24-DIMM nodes.
3. Dual Rank x4 organization interleaves memory banks to maximize sustained bandwidth, crucial for hosting more virtual machines without I/O bottlenecks during peak consolidation.
4. 1866 MT/s transfer rate accelerates in-memory cache operations, directly improving response times for heavy OLAP queries and real-time analytics platforms.
5. 16 GB capacity per module balances density and cost, allowing dense virtualization hosts to allocate adequate guest memory while preserving budget for scale-out deployments.

Why These Specs Matter

The Samsung M393B2G70QH0-CMA is a 16GB DDR3 Registered ECC DIMM, purpose-built for servers. Its four standout features directly resolve critical data center pain points. ECC eliminates silent data corruption, essential for in-memory databases like SAP HANA where a single-bit error can abort transactions. The Registered buffer stabilizes high-density configurations, letting you populate all DIMM slots without signal degradation that causes random crashes in virtualized clusters running hundreds of VMs. Dual-rank x4 organization uses rank interleaving to increase bandwidth, preventing memory bottlenecks when multiple VMs or containerized applications flood the memory bus simultaneously. The 1866 MT/s speed with CL13 latency keeps response times low for hypervisor scheduling and database queries. In essence, this module translates into uninterrupted uptime and consistent performance for mission-critical workloads—exactly what your enterprise demands.

Endurance & Reliability

General Virtualization
Deploy this 16GB DDR3-1866 Registered ECC module in sets that align with your server’s memory channels. Start with four identical DIMMs (64GB total) to populate all channels in a quad-channel platform, delivering balanced bandwidth and reliability for moderate VM density. For heavier consolidation, scale up to 8 or 12 modules (128–192GB) while respecting population rules—ideally two DIMMs per channel—to maintain stable 1866 MT/s speeds without throttling.

In-Memory Database
Maximizing capacity and speed is critical for databases like Redis or SAP HANA. Load all available slots with these dual-rank x4 16GB RDIMMs, targeting 256GB or more on a dual-socket system. Adhere to a balanced configuration of two DIMMs per channel where possible, as exceeding this often forces the memory controller to downclock to 1333 MT/s, hurting latency-sensitive transactions. ECC ensures data integrity for mission-critical datasets.

High-Performance Computing (HPC)
Bandwidth-demanding HPC workloads benefit most from the 1866 MT/s clock and registered signaling. Configure one 16GB DIMM per channel initially (e.g., 4 modules for 64GB on a quad-channel node) to achieve peak transfer rates with low oversubscription. If larger working sets are required, add a second DIMM per channel while verifying the platform can sustain 1866 MT/s; dual-rank x4 DIMMs offer good command/address efficiency for parallel floating-point or simulation codes.

Verified Compatibility

Rigorously tested server memory, proven compatible with HP DL380p Gen8, Dell R720, IBM x3650 M4, and more.

FAQ