General

Engineer's Note

This 64GB DDR5-4800 Registered ECC RDIMM is engineered for enterprise server platforms handling memory-intensive workloads such as virtualization and in-memory databases, where the dual-rank x4 configuration maximizes channel bandwidth and the Registered signal type ensures reliable operation across high-density population. Its ECC and 1.1V low-power design deliver data integrity and energy efficiency, making it ideal for mission-critical deployments that demand uncompromised stability and performance per watt.

Technical Specs & Insights

1. DDR5 memory technology doubles the burst length and delivers higher bandwidth per core, ensuring databases and in-memory caches scale efficiently under concurrent enterprise workloads.
2. 64 GB capacity per module maximizes memory density in 1U and 2U servers, allowing more virtual machines per node without sacrificing dedicated resources.
3. 4800 MT/s speed elevates data throughput for latency-sensitive analytics, reducing query response times in real-time financial and AI inference pipelines.
4. ECC error correction detects and corrects single-bit faults on the fly, preserving data integrity in long-running HPC simulations and mission-critical transactional systems.
5. Dual Rank x4 organization interleaves memory pages across banks, sustaining channel utilization and stable IOPS during peak traffic on hyperconverged infrastructure.

Why These Specs Matter

The M321R8GA0BB0-CQKDS is a 64GB DDR5-4800 Registered DIMM engineered for modern servers, where data integrity and relentless uptime define business success. Its ECC technology actively detects and corrects single-bit memory errors, which is non-negotiable for financial transaction databases and in-memory analytics platforms like SAP HANA. Without ECC, silent data corruption caused by background radiation can cascade into calculation inaccuracies or system crashes that erode trust and revenue. The registered architecture with an onboard command/address buffer dramatically reduces electrical loading on the memory bus, allowing you to fully populate all DIMM slots in a virtualization cluster without signal degradation. This means you can confidently run 30% more virtual machines per host without random memory faults during peak loads. The dual-rank x4 organization elevates bandwidth through concurrent rank interleaving, directly accelerating massive in-memory datasets and real-time processing. Operating at 1.1V with CL40 timing, this module delivers sustainable power efficiency across large-scale deployments while maintaining the absolute stability that database servers and hyperconverged infrastructure demand around the clock.

Endurance & Reliability

General Virtualization
For dense VM consolidation, populate at least one DIMM per memory channel to maximize bandwidth utilization. A balanced configuration with four 64 GB RDIMMs per socket (256 GB total) supports 25–30 moderate VMs, while scaling to eight modules provides breathing room for growth and memory overcommitment. Always install identical dual‑rank DIMMs in matched sets to preserve symmetric NUMA access and avoid performance penalties.

In‑Memory Database
Latency‑sensitive in‑memory platforms demand capacity paired with bandwidth—six 64 GB RDIMMs per CPU (384 GB) satisfy most Redis or SAP HANA footprints. Populate all channels symmetrically with one dual‑rank module each to deliver the full DDR5‑4800 throughput. For mission‑critical nodes, leave two channels empty for future expansion without breaking cache‑line interleaving.

High‑Performance Computing
HPC workloads require maximum memory bandwidth, so install eight 64 GB RDIMMs per socket (512 GB) to fill every channel with a single dual‑rank module. This 1 DIMM per channel (1DPC) topology avoids rank‑switch latencies and sustains full 4800 MT/s speed. Keep module count uniform across sockets to prevent remote memory access delays in tightly‑coupled MPI jobs.

Verified Compatibility

Server DDR5 RDIMM rigorously tested for Dell R760, HPE DL380 Gen11, Lenovo SR650 V3, and more.

FAQ