General

Engineer's Note

This UDIMM module combines ECC error correction with an unbuffered design, making it ideally suited for entry-level servers and professional workstations running virtualization or memory-sensitive database workloads where data integrity is paramount. The dual-rank x8 organization at DDR4-3200 CL22 enhances memory interleaving for improved bandwidth, while the 1.2V operation and 288-pin UDIMM form factor ensure stable, low-power performance on compatible platforms.

Technical Specs & Insights

1. ECC error correction actively detects and corrects single-bit memory faults in real time, preserving data integrity for financial transactions and virtualized database workloads that cannot tolerate silent corruption.
2. 32 GB capacity per module enables dense population on server boards, allowing a single-socket virtualization host to run far more guest VMs without hitting memory bottlenecks.
3. The DDR4-3200 speed rating supplies ample bandwidth for parallel query engines and in-memory caching tiers, reducing latency in heavy-throughput analytics clusters.
4. Dual-rank x8 organization keeps the memory channel interleaved with simultaneous access across ranks, sustaining stable throughput when multiple VMs contend for DRAM resources.
5. Unbuffered signal topology trims access latency compared to registered DIMMs, giving latency-critical edge computing nodes and microservers a tangible responsiveness boost while retaining ECC protection.

Why These Specs Matter

Based on the UDIMM form factor and Error-Correcting Code support, the HMAA4GU7AJR8N-XNT0 is a server-class memory module purpose-built for mission-critical workloads. When you run a virtualization cluster hosting dozens of VMs, a silent memory flip can cascade into data corruption and unplanned downtime. The on-die ECC immediately detects and corrects single-bit errors, ensuring your transactional consistency remains intact and your SLAs stay green. Its 32GB capacity per stick allows you to pack more memory into single-socket servers without sacrificing reliability. Pair that with the dual-rank x8 organization, and the memory controller leverages rank interleaving to parallelize requests—dramatically improving bandwidth for in-memory databases like Redis or SAP HANA where microseconds matter. The 3200MHz speed and low 1.2V voltage further mean you get high throughput without inflating your data center power budget. For your always-on enterprise environment, this module translates directly into safer consolidation of heavy virtualized applications and faster real-time analytics, turning raw specifications into genuine operational confidence.

Endurance & Reliability

General Virtualization
Maximize density by populating all DIMM slots with identical 32GB modules (e.g., 4×32GB for 128GB). This provides ample ECC-protected capacity for multiple VMs and ensures dual-channel interleaving. The configuration avoids memory bottlenecks and supports memory ballooning in hypervisors.

In-Memory Database
To reach 128GB, install 4×32GB dual-rank modules. This enables both rank and channel interleaving for reduced latency. ECC protection is critical to prevent data corruption; ensure the CPU supports 2DPC at full speed. For best results, use identical modules from the same manufacturing batch.

High Performance Computing
For HPC, start with a 2×32GB dual-channel set to maximize bandwidth. Add another pair (4×32GB) to exploit dual-rank interleaving for higher throughput. ECC ensures computational accuracy, and always verify motherboard QVL for 32GB ECC UDIMMs. This stepwise approach balances cost and performance.

By following these guidelines, you can effectively deploy this ECC UDIMM across diverse server roles.

Verified Compatibility

Rigorously tested, compatible with servers like Dell PowerEdge T140, HPE ProLiant ML30 Gen10, and Lenovo ThinkSystem ST250.

FAQ