General

Engineer's Note

Designed for server environments, this 16GB DDR4-2400 RDIMM with ECC and registered signaling ensures strong data integrity and signal stability under heavy loads, making it ideal for virtualization and in-memory databases. Its dual-rank x4 configuration leverages rank interleaving to improve effective bandwidth, while the CL17 latency delivers responsive performance in sustained mission-critical workloads.

Technical Specs & Insights

1. Hardware-level error correction intercepts and corrects data faults in real time, preventing silent corruption and unplanned downtime in transactional and analytical workloads.
2. A registered clock driver decouples the memory controller from the electrical load of dense DIMM populations, preserving stable command integrity across fully populated server banks.
3. Dual rank interleaving keeps memory channels saturated under concurrent access, delivering consistent throughput for heavy virtualization and container consolidation.
4. Generous capacity per module allows higher memory footprints per server, directly expanding in-memory database caches and the number of virtual machines a single node can host.
5. The elevated transfer rate supplies a wider data pipe to the processor, accelerating parallel query execution and real-time processing in data-intensive enterprise applications.

Why These Specs Matter

The Samsung M393A2G40EB1-CRC0Q is a server-grade DDR4 Registered DIMM purpose-built for mission-critical infrastructure, and in virtualized clusters or in-memory databases, four architectural features directly shape your uptime and transaction velocity. First, ECC error correction silently remedies single-bit flips induced by cosmic radiation or electrical noise. Without it, a corrupted memory cell could instantly crash multiple virtual machines or miscalculate a financial ledger—an unacceptable risk for a banking database. Second, the Registered buffer decouples command signals, so you can fully populate every memory channel without signal integrity collapse. This translates to denser hypervisor hosts that safely pack more VMs onto a single node, reducing license and footprint costs. Third, the Dual Rank x4 layout interleaves data across two internal ranks, boosting effective bandwidth via parallel prefetch. For an in-memory database such as SAP HANA or Redis, this means notably faster record lookups and higher OLTP throughput under peak loads. Finally, the 2400MT/s speed at CL17 strikes a sweet spot between responsive latency and low 1.2 V power draw, trimming your data center’s operating expenses. Together, these attributes turn memory from a latent failure point into a workload accelerator that keeps your server consolidation and real-time analytics running securely.

Endurance & Reliability

General Virtualization
For a balanced virtualization host, populate all memory channels symmetrically to maximize bandwidth. Deploying eight 16GB RDIMMs (128GB total) in a dual-socket system allows comfortable overcommit for 15–20 typical VMs while leaving room for memory bursts. Pair identical dual-rank DIMMs per channel to avoid performance penalties and ensure registered ECC resilience.

In-Memory Database
Low-latency in-memory workloads demand maximum capacity and consistent access times. Fully populate every channel with these 16GB dual-rank RDIMMs—aim for 256GB or more per node—so the entire dataset resides in RAM. The registered ECC and x4 organization deliver the reliability essential for persistent data stores, while even population across memory controllers prevents NUMA bottlenecks.

High-Performance Computing (HPC)
HPC clusters thrive on memory bandwidth, making balanced per-socket configurations critical. Install one 16GB RDIMM per channel (e.g., eight modules for 128GB) to saturate the DDR4-2400 interface without throttling. Dual-rank DIMMs amplify bandwidth per channel, and the registered ECC safeguards long-running simulations against single-bit errors, ensuring result integrity over days of computation.

Verified Compatibility

Rigorously tested, this server memory is compatible with Dell PowerEdge R740, HPE ProLiant DL380 Gen10, and Lenovo ThinkSystem SR650.

FAQ