General

Engineer's Note

This Samsung M393A1G43DB1-CRC0Q is a server-grade DDR4-2400 Registered DIMM with ECC, engineered for platforms running virtualization, in-memory databases, and other enterprise workloads where data integrity is non‑negotiable. Its dual‑rank x8 organization and registered signal architecture deliver enhanced signal stability and capacity scaling, while the CL17 latency and ECC engine reliably correct single‑bit errors to maximize uptime in 24/7 rack‑mount environments.

Technical Specs & Insights

1. ECC protection corrects single-bit errors and detects multi-bit faults, safeguarding transactional data integrity for mission-critical enterprise applications and reducing the risk of silent data corruption.
2. Registered signal buffering stabilizes the command and address buses under heavy DIMM population, enabling dense server configurations without compromising signal integrity.
3. Dual Rank x8 organization interleaves memory accesses across two internal ranks, increasing effective bandwidth and sustaining throughput in virtualized environments with concurrent workloads.
4. 2400MHz DDR4 speed delivers ample memory bandwidth per channel, helping to maintain low latency responses for in-memory databases and real-time analytics platforms.
5. 1.2V operating voltage lowers power consumption per DIMM, directly cutting energy costs and thermal output in large-scale data center deployments.

Why These Specs Matter

The M393A1G43DB1-CRC0Q is a server-grade DDR4 RDIMM engineered for mission-critical workloads where data integrity and uptime are non-negotiable. Its ECC technology continuously detects and corrects single-bit errors, shielding your virtualized clusters and in-memory databases like Redis from silent corruption—in a multi-tenant hypervisor, a single flipped bit can cascade into transaction rollbacks or financial inaccuracies that erode trust. The registered command/address buffer then stabilizes signal integrity as you stack ranks of memory, ensuring that dense server configurations sailing through peak VM densities never encounter boot failures or erratic behavior caused by electrical loading. That reliability pairs with the dual-rank x8 interleaving, which boosts effective bandwidth to accelerate real-time analytics and large database queries by overlapping data fetches, directly shrinking latency when milliseconds matter for trading algorithms or customer-facing dashboards. Meanwhile, the intelligent 1.2V operating voltage and DDR4-2400 frequency strike a deliberate balance, slashing power draw and cooling costs in always-on data centers while delivering the deterministic throughput your memory-intensive applications demand. This module means fewer service interruptions, faster data-driven decisions, and a measurably lower total cost of ownership.

Endurance & Reliability

General Virtualization
For general virtualization, populate all memory channels symmetrically to maximize VM density while maintaining balanced performance. Using one 8 GB registered DIMM per channel in a typical dual-socket server (eight channels per CPU) provides 128 GB total with 16 modules. This leaves half the slots open for future scaling and keeps memory running at the full 2400 MHz speed, ideal for moderate consolidation of web servers, domain controllers, and development VMs.

In-Memory Database
In-memory databases like SAP HANA or Redis require large, error-free capacities. Install two 8 GB dual-rank RDIMMs per channel (2DPC) to achieve maximum capacity—256 GB or more in a two-CPU system. Although this may reduce operating frequency to 1866–2133 MHz on some platforms, the ECC and register safeguards ensure data integrity, which is critical for transactional workloads where in-memory tables cannot tolerate silent corruption.

High-Performance Computing (HPC)
HPC workloads demand peak memory bandwidth for simulations and parallel solvers. Equip each channel with a single 8 GB RDIMM (1DPC) to sustain the rated 2400 MHz without downclocking. In a dual-socket server, 16 modules deliver 128 GB of uniformly low‑latency capacity. This configuration avoids per‑rank timing penalties and provides the balanced throughput needed for CFD, weather modeling, and molecular dynamics codes.

Verified Compatibility

Rigorously tested DDR4 server memory, compatible with Dell PowerEdge R760, HPE ProLiant DL380 Gen10, Lenovo ThinkSystem SR650.

FAQ