General

Engineer's Note

This server-grade DDR5 RDIMM is purpose-built for virtualization platforms and in-memory databases where 64 GB capacity and data integrity are non-negotiable. Its dual-rank x4 configuration maximizes interleaving bandwidth, while ECC and registered signal architecture jointly ensure end-to-end error correction and command-address stability under sustained heavy loads.

Technical Specs & Insights

1. 64GB capacity per module triples the memory footprint available for virtualized workloads, allowing denser VM consolidation without sacrificing performance or triggering costly node expansion.
2. 4800MT/s transfer rate pushes per-channel bandwidth to satisfy heavy concurrent access in large-scale data analytics, cutting query latency under sustained throughput.
3. ECC protection continuously detects and corrects single-bit errors, ensuring data integrity in financial processing and long-duration scientific computations where silent corruption is unacceptable.
4. Registered signal buffering stabilizes command and address paths across fully populated server boards, preventing signal degradation that would otherwise limit capacity or cause intermittent faults.
5. Dual rank x4 organization interleaves bank groups to maintain peak channel utilization, delivering predictable low-latency response during multi-tenant hosting spikes.

Why These Specs Matter

The Samsung M321R8GA0BB0-CQKZJ is a 64GB DDR5-4800 Registered ECC RDIMM built to eradicate silent data corruption in enterprise data centers. In virtualization clusters hosting hundreds of VMs, a single bit-flip from cosmic radiation can silently corrupt critical workloads or crash guest operating systems. The onboard ECC detects and corrects single-bit errors in real time, delivering uncompromising data integrity for transactional databases and real-time analytics. The registered clock driver buffers command and address signals, letting you populate dense servers without signal degradation, preventing reboots in VMware clusters. The dual-rank x4 architecture activates rank interleaving, parallelizing accesses to accelerate in-memory databases like Redis, yielding faster queries and higher concurrency. Operating at just 1.1V, it lowers power draw and thermal load, aligning with sustainability mandates through RoHS and WEEE compliance.

Endurance & Reliability

General Virtualization
For virtualized environments hosting multiple VMs, populate each memory channel with identical 64GB RDIMMs to maximize capacity while maintaining balanced performance. A typical dual-socket server with 8 channels per CPU benefits from one DIMM per channel (16 modules total), delivering 1TB of memory with optimal throughput. Avoid mixing capacities, and leave room for future expansion by using only half the slots initially.

In-Memory Database
In-memory databases demand the lowest latency and highest capacity. Install this 64GB dual‑rank RDIMM in multiples of six or eight per processor, filling all channels to exploit memory interleaving. A configuration such as 24 modules across two sockets yields 1.5TB, allowing entire datasets to reside in RAM. The registered ECC design ensures data integrity critical for transactional consistency.

High-Performance Computing
HPC workloads like simulations and big-data analytics require both bandwidth and capacity. Deploy eight 64GB RDIMMs per CPU socket to saturate the eight-channel DDR5 architecture, achieving peak 4800MT/s speeds with CL40 latency. For GPU‑accelerated nodes, match CPU memory to the GPU high‑bandwidth memory pool, and scale to 32 modules in 2‑socket servers to prevent data‑transfer bottlenecks during large‑scale parallel runs.

Verified Compatibility

Rigorously tested, compatible with servers: Dell PowerEdge R760, HPE ProLiant DL380 Gen11, Lenovo ThinkSystem SR650 V3.

FAQ