General

Engineer's Note

This is a server-class DDR3 Registered ECC memory module built for legacy enterprise platforms, and it is ideally suited for virtualization hosts and memory-intensive workloads such as in-memory databases where data integrity is critical. The dual-rank x8 configuration with CL13 CAS latency and registered signal buffering delivers stable, high-density operation while its ECC engine actively corrects single-bit errors to prevent silent data corruption.

Technical Specs & Insights

1. ECC error correction actively detects and corrects single-bit memory faults, preserving data integrity for virtualized workloads where silent corruption could compromise entire tenant environments.
2. Registered clock driver buffers command and address signals, stabilizing multi-DIMM channels and enabling dense memory populations critical for scaling virtual machine density per physical host.
3. Dual Rank x8 organization leverages rank interleaving to overlap data accesses, sustaining higher effective bandwidth during simultaneous query execution in database and analytics clusters.
4. 1866 MT/s transfer rate accelerates large dataset movement between DRAM and CPU, cutting latency under heavy consolidation that saturates memory controllers with concurrent I/O streams.
5. CL13 latency provides a disciplined access window that complements the elevated frequency, delivering consistent response times for latency-sensitive enterprise applications like OLTP and real-time processing.

Why These Specs Matter

Built for the relentless demands of data centers, the Samsung M393B1G73EB0-CMA is not simply an 8GB DDR3 module—it is a server-grade RDIMM engineered to eliminate the two greatest threats to your infrastructure: silent data corruption and scaling instability. In a virtualized cluster hosting dozens of VMs, a single undetected bit flip in DRAM can crash a hypervisor or corrupt a financial transaction. The module’s ECC engine continuously scans and corrects single-bit errors, ensuring your business logic remains mathematically intact around the clock. Equally critical, the registered buffer re-drives command and address signals, so you can populate all 24 DIMM slots across a dual-socket platform without signal degradation, achieving the high memory density your VMware or KVM nodes desperately need.

For an in-memory database like Redis or SAP HANA, throughput and latency dictate revenue. The dual-rank x8 organization on this module enables rank interleaving, allowing the memory controller to access one rank while the other precharges, effectively hiding refresh overhead and slashing effective access time. Paired with a swift 1866MHz clock and tight CL13 latency, it sustains the 14.9 GB/s peak bandwidth that keeps your real-time analytics engine responsive under bursty query loads. Every parameter—from the standard 1.5V operating voltage that minimizes thermal stress inside dense enclosures to full FCC and EU RoHS compliance—is a conscious choice for 24/7 reliability. This is not just memory; it is a strategic safeguard against downtime, designed for professionals who understand that consistency, capacity, and correctness are the only currencies that matter in the server room.

Endurance & Reliability

This Samsung M393B1G73EB0-CMA is an 8GB DDR3-1866 ECC Registered RDIMM, a server memory module. Capacity planning guidelines for key workloads follow.

General Virtualization
Populate all memory channels symmetrically. Start with one 8GB DIMM per channel to achieve 64GB using eight modules in a dual-socket server; this supports 20–30 VMs. The registered ECC corrects single-bit errors, raising platform stability for dense virtualization. Scale to 128GB by populating a second DIMM per channel.

In-Memory Database
Fully populate all channels, ideally with two DIMMs per channel (2DPC) to reach 256GB (32 modules) or 128GB (16 modules). The ECC and registered buffer maintain signal integrity for large in-memory datasets like Redis or SAP HANA. Use identical dual-rank DIMMs to ensure reliable operation.

High-Performance Computing
For best bandwidth, install one DIMM per channel (1DPC) to maintain DDR3-1866 speed. A typical node uses 64GB (eight 8GB modules) matched RDIMMs, minimizing latency for simulations. If additional capacity is required, adopt 2DPC while preserving channel symmetry, accepting a slight frequency trade-off.

Verified Compatibility

Rigorously tested server memory, compatible with Dell R720/R620, HPE DL380p Gen8, IBM x3650 M4, etc.

FAQ