General

Engineer's Note

This 64GB DDR4-3200 Registered ECC RDIMM is purpose-built for server platforms handling virtualization, in-memory databases, and mission-critical workloads where data integrity is non-negotiable. Its dual-rank x4 organization and registered architecture combine to deliver exceptional signal stability at high capacities, while ECC actively corrects single-bit errors, ensuring reliable operation under sustained memory-intensive loads.

Technical Specs & Insights

1. ECC protection silently detects and corrects single-bit memory errors, preserving transactional integrity for financial databases and preventing unplanned downtime in always-on servers.
2. Registered buffering stabilizes signal integrity across densely populated memory channels, allowing full-slot configurations without sacrificing the reliability demanded by large-scale virtualization hosts.
3. A generous 64GB per module doubles the memory footprint of typical server builds, comfortably provisioning hundreds of containers or memory-hungry in-memory caches without trading density for redundancy.
4. 3200 MHz operation delivers a brisk 25.6 GB/s per channel, accelerating real-time analytics and high-frequency trading platforms where moving vast datasets quickly is a revenue driver.
5. Dual Rank x4 organization leverages parallel rank interleaving to keep the memory pipeline saturated, combating latency spikes during heavy multi-tenant cloud workloads and ensuring consistent Quality of Service.

Why These Specs Matter

You depend on your data center to run virtualization clusters and real-time databases without interruption. The SK hynix 64GB DDR4-3200 RDIMM (HMAA8GR7CJR4N-XN) addresses that need through four critical attributes. Its ECC function detects and corrects single-bit errors before they turn into corrupted transactions or crashed VMs, safeguarding data integrity in SAP HANA or Oracle Database scenarios. The registered signal buffer means you can install high-density 64GB modules across all channels without electrical loading issues, essential when hosting hundreds of virtual machines on a single server. The dual-rank x4 organization allows interleaving across ranks, which dramatically improves memory bandwidth during heavy database table scans and reduces virtualization overhead when multiple VMs request memory access simultaneously. Running at 3200MT/s at just 1.2V, this module delivers the speed required for big data analytics while lowering power and cooling costs—making it a reliable, cost-effective backbone for your mission-critical workloads.

Endurance & Reliability

General Virtualization
For dense server consolidation, populate at least eight 64 GB RDIMMs (512 GB) across balanced memory channels to avoid NUMA penalties. A two-DIMM-per-channel configuration maintains 3200 MT/s speed and delivers ample headroom for overcommitting RAM to numerous VMs without resorting to swap.

In-Memory Database
Latency-sensitive workloads like SAP HANA demand maximum capacity without sacrificing speed. Install twelve of these dual-rank RDIMMs (768 GB) in a symmetric layout, keeping one DIMM per channel to sustain CL22 at full 3200 MHz. This scales in-memory datasets while leaving spare slots for future growth or rank sparing.

HPC
For bandwidth-critical simulations, use one DIMM per channel to avoid speed drops, yielding 512 GB or 1 TB per node with eight or sixteen modules. The dual-rank x4 design supplies the requested throughput for large-scale parallel I/O. Consider two DIMMs per channel only if problem sizes exceed node capacity, and evaluate the resulting clock reduction carefully.

Verified Compatibility

Rigorously tested server memory; compatible with Dell PowerEdge R750, HPE ProLiant DL380 Gen10 Plus, Lenovo ThinkSystem SR650 V2.

FAQ