General

Engineer's Note

Designed as a server-grade RDIMM, this DDR3-1333 module with ECC and registered signaling is ideal for virtualization hosts and memory-intensive database workloads that demand data integrity. Its dual-rank x8 organization at CL9 latency enhances signal stability and capacity scaling in multi-DIMM configurations, ensuring reliable operation under sustained enterprise loads.

Technical Specs & Insights

1. ECC error correction safeguards transactional data integrity, preventing silent memory corruption in financial or database server workloads.
2. Registered signal buffering enables high-capacity memory configurations, crucial for scaling virtualized environments without signal degradation.
3. Dual Rank x8 organization utilizes rank interleaving to boost effective bandwidth, improving response times for concurrent virtual machine requests.
4. 1333MHz clock speed delivers consistent data throughput for memory-intensive enterprise applications, balancing performance with power consumption.
5. 1.5V standard voltage ensures robust electrical compatibility with server boards and minimizes heat stress during non-stop operation.

Why These Specs Matter

The Samsung M393B5673EH1-CH9Q1 is a server-grade DDR3 Registered DIMM, purpose-built for data centers where reliability and scalability are non-negotiable. Its ECC capability directly guards against silent data corruption caused by single-bit errors—a critical safeguard when running an in-memory database like SAP HANA, where even one flipped bit can crash a transaction or skew financial records. Registered buffering decouples the memory chips from the CPU’s command bus, stabilizing signal integrity as you populate all 24 DIMM slots on a dual-socket board. This becomes essential in a dense virtualization cluster: without it, populating large amounts of RAM would invite signal degradation and unpredictable system halts, directly threatening the dozens of VMs hosting your business applications. The Dual Rank x8 organization further benefits these workloads by enabling rank interleaving, which overlaps read/write cycles to deliver sustained bandwidth when multiple virtual machines simultaneously hammer the memory subsystem. Combined with the energy-conscious 1.5V operating voltage and a 1333MHz speed at CL9 latency, this module delivers a tuned balance between throughput and power draw—keeping your hypervisor nodes stable, your database queries fast, and your operating costs predictable across years of 24/7 operation.

Endurance & Reliability

General Virtualization
For a typical hypervisor host running multiple VMs, memory capacity and reliability are paramount. Populate the server with at least six to eight identical 2 GB RDIMMs per CPU to balance cost and density, ensuring a total of 12–16 GB to handle moderate loads. Leverage the module’s ECC and registered features to maintain uptime, and always install DIMMs in matched sets to preserve multi-channel interleaving.

In-Memory Database
In-memory databases demand low latency and high availability, making ECC RDIMMs a baseline requirement. Deploy the maximum supported number of these 1333 MHz modules—often 12 or more per server—to reach 24 GB or greater, placing the entire dataset in RAM. Configure all memory channels symmetrically and avoid mixing speeds or ranks to prevent training errors that could introduce latency spikes.

High-Performance Computing (HPC)
HPC clusters prioritize memory bandwidth alongside capacity, so populate every memory channel with a single dual-rank x8 DIMM. For a dual-socket node, install eight 2 GB RDIMMs per CPU (16 total, 32 GB) to achieve peak bandwidth and minimize channel imbalance. The registered ECC design sustains large-scale simulations that are sensitive to silent data corruption.

Verified Compatibility

Rigorously tested server memory, compatible with Dell PowerEdge R710/R720, HP ProLiant DL380 G7, IBM System x3650 M3, and more.

FAQ