General

Engineer's Note

This is a server-class DDR5 Registered DIMM with ECC, optimized for enterprise platforms running virtualization, in-memory databases, and mission-critical workloads where data integrity is paramount. Its registered signal type and on-die ECC combine to stabilize high-density memory configurations while the 1.1V operating voltage and PC5-38400 bandwidth ensure efficient, reliable throughput under sustained load.

Technical Specs & Insights

1. Single-bit error correction with multi-bit detection prevents silent data corruption, preserving transactional integrity for financial and database operations around the clock.
2. Registered clock driver buffers command and address signals, maintaining signal integrity across fully loaded channels to maximize memory scalability in virtualization hosts.
3. DDR5 architecture doubles bank groups and burst length, delivering higher thread-level concurrency for multi-socket server CPUs handling dense containerized workloads.
4. Forty-eight hundred megatransfers per second provides thirty-eight point four gigabytes per second of peak bandwidth per module, cutting data ingestion time in real-time analytics and AI inference.
5. Sixteen-gigabyte capacity per DIMM raises memory density per 1U node, enabling more active virtual machines under heavy consolidation without paging bottlenecks.

Why These Specs Matter

When your data center orchestrates dozens of virtual machines or powers an in-memory database like Redis, a single bit flip in DRAM can cascade into silent data corruption, transaction errors, or even node failure. The Samsung M321R2GA3BB0-CQKVG is engineered specifically to eliminate that risk. As a DDR5-4800 registered DIMM with full ECC, its 16GB capacity and 1.1V design address the real demands of modern server infrastructure.

The true value lies in how these four characteristics intersect. ECC memory continuously detects and corrects single-bit errors caused by cosmic rays or electrical noise, preserving data integrity for critical financial records or machine learning inference pipelines where accuracy is non-negotiable. Registered signal buffering stabilizes command and address buses as you scale to 8‑ or 16‑DIMM configurations per CPU, preventing timing mismatches that could crash a hypervisor cluster during live VM migration. Meanwhile, the 4800 megatransfers per second bandwidth paired with a low 1.1V operating voltage reduces thermal load across a full rack, directly lowering cooling costs and improving total cost of ownership. In a virtualized cluster, this means denser, more resilient consolidation without sacrificing uptime; for an in-memory database, it ensures sub-millisecond query responses remain deterministic even under continuous 24/7 load. You are not just buying a memory module — you are hardening your infrastructure against the invisible threats that degrade performance and trust.

Endurance & Reliability

General Virtualization
For dense VM hosting, populate all available channels with one 16GB RDIMM per channel to maximize memory bandwidth while maintaining a balanced core-to-memory ratio. A dual‑socket server with eight channels each can achieve 256GB using sixteen modules, comfortably supporting 50–70 moderate VMs. Avoid mixing capacities within a channel to preserve symmetric access and NUMA stability.

In-Memory Database
Latency‑sensitive databases such as Redis or SAP HANA benefit from fully populating each memory channel with a single 16GB DIMM, delivering 128GB per socket on an 8‑channel platform. Enable memory mirroring or rank sparing only if high availability outweighs capacity, as these modes reduce usable RAM. For larger datasets, consider 32GB parts, but the registered 16GB module strikes a strong cost‑per‑gigabyte sweet spot for mid‑sized caches.

High-Performance Computing
HPC codes that stream large arrays demand maximum interleaving; install one 16GB RDIMM in every available channel to achieve full channel count and peak bandwidth. On a 64‑core processor with eight memory channels, sixteen modules supply 256GB of ECC‑protected capacity while sustaining near 307 GB/s of theoretical transfer. This configuration minimizes page faults during large‑scale MPI runs without overspending on capacity that the workload cannot utilize.

Verified Compatibility

Strictly tested, compatible with Dell PowerEdge R760, HPE ProLiant DL380 Gen11, Lenovo ThinkSystem SR650 V3, and similar servers.

FAQ