General

Engineer's Note

This Samsung M393B1K70DH0-CH909 is a server-grade DDR3-1333 Registered DIMM with ECC, optimized for virtualization, in-memory databases, and other mission-critical workloads where data integrity is paramount. Its dual-rank x4 organization and CL9 latency deliver reliable throughput, while the registered signal type ensures stable operation in high-density multi-DIMM server configurations.

Technical Specs & Insights

1. Error correction coverage silently resolves single-bit memory faults, protecting financial and scientific workloads from data corruption during non-stop operation.
2. Registered buffering decouples memory chips from the host bus, maintaining stable signal integrity across fully populated server racks.
3. A balanced module capacity supports dense multi-tenant virtualization, giving each guest ample headroom without raising energy consumption.
4. Dual-rank interleaved access keeps the memory channel saturated at all times, sustaining consistent throughput under heavy virtual machine consolidation.
5. Conservative data-rate timing ensures predictable latency across large memory populations, a prerequisite for reliable database and collaboration services.

Why These Specs Matter

As an 8GB Registered DDR3 DIMM, the Samsung M393B1K70DH0-CH909 is purpose-built to eliminate the pain points that haunt server administrators. Its ECC actively prevents single-bit data corruption, a critical necessity in dense virtualized clusters where an undetected error could silently crash multiple guest machines or invalidate financial records. The registered buffer stabilizes command and address signals across fully populated memory channels, allowing you to max out all DIMM sockets for RAM-hungry hypervisors without intermittent boot failures or stability drops. The dual-rank x4 organization unlocks rank interleaving, which dramatically amplifies effective bandwidth; when your in-memory database like Redis or SAP HANA handles heavy read/write mixes, the memory controller can prepare one rank while accessing the other, slashing idle latency and boosting transaction throughput. The consistent CL9 response at 1333MHz further ensures that latency-sensitive OLTP queries never stall. For your virtualized infrastructure and data-intensive applications, these features mean hardened data integrity, genuine scalability without signal degradation, and measurably accelerated memory-bound workloads.

Endurance & Reliability

This is a server-class DDR3 Registered ECC memory module (RDIMM), designed for reliable capacity expansion in enterprise servers. Below are capacity planning guidelines for three typical server workloads.

General Virtualization
Populate memory channels uniformly to maximize bandwidth, since unbalanced configurations degrade VM performance. For a dual-socket host, install six or twelve identical 8 GB modules (48–96 GB total) to consolidate moderate virtual machines. This balanced layout also simplifies future scaling.

In-Memory Database
Low latency and absolute data integrity are critical for engines like Redis or SAP HANA. Fill every channel with these 8 GB ECC RDIMMs to reach maximum protected capacity while maintaining memory interleaving. ECC guards against single-bit errors that could silently corrupt in-memory datasets.

High Performance Computing (HPC)
HPC clusters need high sustained bandwidth. Mount one DIMM per channel (commonly eight modules per CPU socket) to exploit all channels without sacrificing clock speed. Using identical part numbers across every node ensures repeatable job timelines and reliable parallel execution.

Verified Compatibility

Rigorously tested and validated for server compatibility: fits Dell PowerEdge R720, HP ProLiant DL380p Gen8, Lenovo ThinkServer RD630.

FAQ