General

Engineer's Note

This is a server-class DDR5-6400 Registered DIMM with ECC, purpose-built for data integrity in virtualization, in-memory databases, and enterprise workloads. Its single-rank x4 organization at 6400 MT/s delivers balanced bandwidth and capacity density while the registered signal architecture ensures robust electrical loading on high-capacity memory channels.

Technical Specs & Insights

1. 32GB capacity per module delivers the right density for virtualized environments, allowing more active VMs per server without immediate costly hardware expansion.
2. DDR5 technology doubles the burst length and improves power efficiency over previous generations, directly boosting in-memory database throughput under heavy query loads.
3. 6400MT/s transfer speed shrinks data access latency for memory-bound workloads, accelerating real-time analytics and financial modeling tasks.
4. ECC protection transparently corrects single-bit errors, preserving data integrity in mission-critical applications where silent corruption is unacceptable.
5. Registered signal buffering stabilizes the electrical load on the memory bus, enabling operators to fully populate all channels for maximum capacity and uptime in dense rack deployments.

Why These Specs Matter

When you are running a virtualized cluster hosting dozens of mission-critical VMs, a single undetected bit-flip in memory can cascade into data corruption across your entire stack. The Samsung M321R4GA0EB2-CCPKC RDIMM eliminates this risk with end-to-end ECC, silently correcting single-bit errors and locking down data integrity in real time. That is not just protection—it is the difference between seamless uptime and a 3 a.m. outage.

In memory-hungry applications like an in-memory database or a heavily consolidated hypervisor, the registered clock driver on this module buffers command and address signals, allowing your server to support 32GB per DIMM without signal degradation. This Direct means you can populate densely across 12 or 24 slots and still run stable at 6400 MT/s, accelerating query responses under multi-threaded loads.

The single-rank x4 organization further reduces electrical loading on the memory channel, keeping latency predictable even when all DIMM slots are filled. In practice, for your Redis cluster or VMware farm, this translates to consistently higher IOPS and fewer tail-latency spikes that frustrate users. Finally, the PC5-51200 bandwidth at CL52 ensures that memory bandwidth keeps pace with today’s multi-core Xeon and EPYC processors, so your real-time analytics engines never stall waiting for data. For a data center that cannot afford compromise, this RDIMM delivers the reliability, density, and speed your workloads demand.

Endurance & Reliability

General Virtualization
For a typical hypervisor hosting 20–30 moderate VMs, install six to eight of these 32 GB registered DDR5-6400 modules across balanced memory channels. This yields 192–256 GB of reliable ECC-protected capacity, ensuring smooth overcommitment and failover without swapping to storage.

In-Memory Database
Memory-resident databases like Redis or SAP HANA demand capacity far exceeding the working set. Populate all available DIMM slots with these 32 GB RDIMMs—often 12 or 16 modules per dual-socket server—to reach 384–512 GB or more. The combination of registered signaling and single-rank x4 organization keeps latency consistent under heavy parallel access.

High-Performance Computing (HPC)
HPC nodes benefit from maximum memory bandwidth, so use a balanced configuration of this 6400 MT/s ECC memory across all memory controllers. Deploy eight modules per node (one DIMM per channel) for 256 GB total, aligning with the single-rank x4 design that delivers superior command bus efficiency and thermal headroom during sustained double-precision workloads.

Verified Compatibility

Rigorously tested DDR5-6400 ECC RDIMM, compatible with Dell PowerEdge R760, HPE DL380 Gen11, Lenovo SR650 V3.

FAQ