General

Engineer's Note

This DDR5-4800 Registered DIMM with ECC is engineered for enterprise server platforms, delivering advanced data integrity for memory-intensive workloads such as virtualization, in-memory databases, and mission-critical applications. Its dual-rank x8 configuration and 40-40-40 sub-timings optimize bandwidth efficiency at 1.1V, while the registered signal type ensures stable operation across large-scale, multi-DIMM memory channels.

Technical Specs & Insights

1. High module density maximizes memory capacity per server node, enabling more virtual machines and containers to coexist without physical resource contention.
2. DDR5 technology doubles burst length and improves power efficiency, feeding modern multi-core server CPUs with the sustained bandwidth they demand.
3. Elevated transfer rate accelerates in-memory databases and real-time analytics, shrinking query response times under heavy concurrent loads.
4. On-die error correction silently eliminates single-bit data corruptions, safeguarding long-duration mission-critical workloads and financial transactions.
5. Registering clock and address signals stabilizes signal integrity across fully populated multi-DIMM channels, essential for scaling memory to rack-level density.

Why These Specs Matter

In modern data centers, the Samsung M321R4GA3BB6-CQKMG 32GB DDR5 RDIMM transforms reliability and throughput. Its ECC technology actively corrects single-bit errors—essential when a cosmic ray bit flip could corrupt a financial transaction or crash a virtual machine in a dense VMware cluster, preventing silent data corruption. The registered buffer decouples the memory controller from the DRAM loads, enabling fully populated servers to maintain 4800MT/s speeds without signal degradation; this stability is critical when expanding an in-memory database like SAP HANA to terabyte scale. Leveraging a Dual Rank x8 organization, the module performs rank interleaving that hides access latencies, so a Redis cache handling millions of concurrent lookups never suffers micro-stalls. Finally, operating at just 1.1V, it reduces power draw and thermal output across a server rack, lowering both electricity bills and cooling demands. This translates directly into resilient virtualized workloads and accelerated transactional throughput, all while consuming less power.

Endurance & Reliability

General Virtualization
For a typical hypervisor hosting multiple VMs, 32GB RDIMMs provide the ideal balance of density and cost. Deploying modules in multiples of eight (e.g., 8 x 32GB for 256GB total) across memory channels ensures balanced NUMA access and maximizes throughput. The registered ECC design safeguards guest uptime by correcting single-bit errors and detecting multi-bit faults, which is essential for multi-tenant environments.

In-Memory Database
In-memory databases such as Redis or SAP HANA demand the lowest possible latency and absolute data integrity. Populate all memory channels symmetrically with dual-rank x8 32GB RDIMMs to achieve 256GB or 512GB configurations, leveraging rank interleaving for better performance. ECC scrubbing and the 4800MT/s speed at CL40 help sustain high transaction rates while protecting against silent data corruption.

High-Performance Computing (HPC)
HPC clusters processing large datasets benefit from full channel population per socket, using 8 or 16 identical 32GB RDIMMs to saturate bandwidth. The registered buffer stabilizes signal integrity at scale, allowing dense node configurations without sacrificing speed. Combined with the module's low 1.1V operation, this setup delivers the sustained memory bandwidth critical for simulation, modeling, and parallel workloads.

Verified Compatibility

Tested server RDIMM. Compatible with Dell PowerEdge R760, HPE ProLiant DL380 Gen11, Lenovo ThinkSystem SR650 V3, and more.

FAQ