General

Engineer's Note

Designed for enterprise servers, this 64GB DDR4-3200 RDIMM combines ECC and a registered signal type to deliver uncompromising data integrity and signal stability, making it an ideal choice for virtualization platforms, in-memory databases, and other memory-intensive workloads. Its dual-rank x4 organization maximizes bank interleaving for improved effective bandwidth, while the 1.2V operating voltage and CL22 latency ensure reliable, power-efficient scaling in dense multi-DIMM configurations.

Technical Specs & Insights

1. With a 64 GB capacity, a single RDIMM packs enough density to support significantly more virtual machines per server node, reducing the need for frequent hardware scale-out.
2. The 3200 MT/s speed delivers the high memory bandwidth required to keep multiple server-class CPU cores fed, accelerating real-time database queries and in-memory analytics.
3. ECC protection corrects single-bit errors and detects multi-bit corruption, directly preventing silent data decay that could otherwise crash long-running critical workloads.
4. The registered signal type buffers command and address lines, preserving signal integrity so data centers can populate all channels with high-capacity DIMMs without sacrificing stability.
5. A dual-rank x4 organization interleaves memory accesses across two internal ranks, boosting sustained throughput under heavy virtualization and container orchestration without expanding the physical DIMM count.

Why These Specs Matter

The 64GB HMAA8GR 7AJR4N-XNT8AA is a DDR4-3200 Registered DIMM engineered for servers that cannot tolerate failure. Its four core strengths translate directly into uptime and throughput for virtualized clusters and in‑memory databases. In a hypervisor running dozens of VMs, ECC prevents single‑bit soft errors from silently corrupting guest memory—a flipped bit can crash a financial transaction or destabilize the entire host. The Registered buffer keeps the memory bus stable when all channels are fully loaded, so you populate 24 DIMM slots with confidence, avoiding signal‑induced reboots. For Redis or SAP HANA, the dual‑rank x4 design leverages bank interleaving to deliver higher sustained bandwidth and lower queuing latency; combined with 64 GB per module, it holds massive hot datasets entirely in RAM. Meanwhile, the 1.2 V supply trims power draw across the rack. Every clock cycle, every corrected error means safer data, faster queries, and lower TCO.

Endurance & Reliability

Server Memory Identified: The 64GB DDR4-3200 ECC Registered RDIMM is built for server-class workloads, offering error correction, high capacity per module, and reliable buffered signaling for multi-DIMM configurations.

General Virtualization
Populate at least four modules (256GB total) across dual processors for balanced memory access. Deploy in a 2 DIMMs-per-channel (2DPC) layout to maintain 2933 MT/s speed on typical Xeon platforms, maximizing VM density without oversubscribing memory bandwidth.

In-Memory Database
Use six or eight identical 64GB RDIMMs (384GB–512GB) in a single-socket build or mirrored across two sockets, fully populating all channels at 1DPC for peak 3200MHz speed. This configuration guarantees low-latency, high-throughput access critical for Redis, SAP HANA, or Memcached, while ECC detects and corrects bit errors in massive datasets.

High-Performance Computing
Install eight modules per node (512GB) in a balanced, fully-populated channel-per-socket scheme, typically 1DPC to sustain 3200MHz. Dual-rank x4 DIMMs amplify command/address parallelism, boosting bandwidth for CFD, molecular dynamics, or large-scale simulations. Scale capacity linearly with identical kits to avoid inter-DIMM timing conflicts.

Verified Compatibility

Server-grade RDIMM, rigorously tested, compatible with Dell PowerEdge R760, HPE ProLiant DL380 Gen11, Lenovo ThinkSystem SR650 V3, etc.

FAQ