General

Engineer's Note

Designed for enterprise server platforms, this 64GB DDR5-4800 RDIMM leverages dual-rank organization and registered signaling to deliver robust memory bandwidth and capacity scaling for virtualized environments and in-memory databases. Its ECC error correction combined with a low 1.1V operating voltage ensures uncompromising data integrity and power efficiency under sustained heavy workloads.

Technical Specs & Insights

1. 64GB capacity per module allows dense memory configurations in 2U servers, maximizing the number of virtual machines per physical host without sacrificing memory bandwidth.

2. DDR5 technology doubles the burst length and improves power efficiency, delivering the higher memory throughput required by real-time analytics and in-memory databases in enterprise data centers.

3. ECC error correction detects and corrects single-bit memory errors on the fly, directly preventing silent data corruption in financial transactions and critical database workloads.

4. Registered signal buffering stabilizes high-capacity memory channels by re-driving address and command signals, enabling the deployment of fully populated 24-DIMM server boards with reliable operation.

5. 4800MT/s transfer speed accelerates data movement between CPU and memory, reducing latency for large dataset processing in AI inference and high-frequency storage caching.

Why These Specs Matter

When you are running a heavily consolidated virtualization cluster or an in-memory database like SAP HANA, every bit of data integrity and every fraction of memory bandwidth directly impacts your bottom line. The Samsung M321R8GA0BB0-CQKZL, a 64GB DDR5-4800 Registered DIMM, is engineered precisely for these moments. Its ECC technology silently corrects single-bit errors caused by cosmic radiation or electrical noise, preventing silent data corruption that could crash a financial transaction or poison a long-running analytics job. Meanwhile, the registered clock driver buffers command and address signals, guaranteeing rock-steady signal integrity when all 24 DIMM slots in a server are fully populated with these high-density modules. With dual rank organization, this memory interleaves internal banks to serve more pages concurrently, slashing latency under the heavy, random access patterns of multiple guest VMs fighting for resources. The 4800MT/s speed, driven at an efficient 1.1V, delivers 38.4GB/s of bandwidth per channel—vital for keeping a real-time dataset fully resident in memory, where a millisecond of delay translates directly into lost revenue. This is not just a module; it is your uptime and performance insurance.

Endurance & Reliability

General Virtualization
For a 64GB RDIMM, populate servers in balanced configurations to maximize memory bandwidth. Use multiples of eight identical modules (e.g., 8 x 64GB = 512GB) across all memory channels to avoid NUMA imbalances and keep VM density high. This single 64GB DIMM gives you a dense building block that leaves room for future scaling without wasting slots.

In-Memory Database
Capacity and reliability are paramount—deploy at least 16 modules (1TB total) per socket to hold large working sets entirely in RAM. Dual-rank 64GB RDIMMs with ECC help sustain data integrity under constant write pressure. Keep one DIMM per channel initially to preserve latency-sensitive performance, then scale to two per channel if your dataset grows beyond 2TB.

High-Performance Computing (HPC)
Memory bandwidth is the bottleneck in most HPC workloads, so populate all eight channels per CPU with identical 64GB RDIMMs for a balanced 512GB footprint. The registered ECC and dual-rank design deliver the stability and throughput needed for tightly coupled parallel jobs. For memory-bound simulations, consider upgrading to 4800MT/s modules across all slots to extract every bit of available channel bandwidth.

Verified Compatibility

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

FAQ