General

Engineer's Note

This 128 GB DDR5-4800 Registered ECC RDIMM is engineered for high-density server platforms, delivering superior data integrity and stability for memory-intensive workloads such as virtualization, in-memory databases, and large-scale enterprise applications. Its quad-rank configuration maximizes capacity per channel while the registered signal type and ECC ensure reliable operation under heavy load, with the CL46 latency balancing speed and efficiency in sustained mission-critical environments.

Technical Specs & Insights

1. 128 GB capacity per module maximizes memory density in a single DIMM slot, enabling large-scale virtualization hosts to run more VMs per server without sacrificing performance.

2. ECC protection continuously detects and corrects single-bit errors, preserving data integrity in financial transactions and database workloads where silent corruption is unacceptable.

3. The registered signal type buffers command and address lines, stabilizing electrical loads so data centers can populate all memory channels with high-capacity DIMMs while maintaining reliable operation.

4. Quad rank organization packs four independent sets of memory chips onto one module, delivering the extreme per-DIMM capacity needed for in-memory analytics while the memory controller interleaves access to sustain throughput.

5. DDR5-4800 speed supplies the double-digit percentage bandwidth uplift over the previous generation, accelerating real-time data processing and reducing latency in heavily consolidated enterprise environments.

Why These Specs Matter

The HMCT04AEERA131N is a 128GB DDR5-4800 Registered DIMM engineered for modern servers, and its four defining characteristics translate directly into uptime and performance for mission-critical workloads. First, ECC error correction guards against silent data corruption: in an in-memory database like SAP HANA, a single undetected bit flip can cascade into financial inaccuracies or transactional failures. Here, ECC means calculations you can trust. Second, the Registered signal buffer stabilizes high-density configurations. When you populate a virtualization cluster with dozens of these DIMMs per node, the register reduces electrical load on the memory controller, allowing you to run hundreds of virtual machines with consistent, glitch-free memory access rather than facing sporadic boot failures under full load.

Third, the massive 128GB capacity lets you consolidate workloads. A single dual-socket server can now host expansive VMware or KVM environments with ample headroom for large memory reservations, eliminating costly server sprawl. Finally, the Quad Rank organization interleaves memory banks to sustain bandwidth-intensive operations. In a real-time analytics cluster, this rank interleaving keeps data pipelines saturated, so complex query results arrive faster without the bottlenecks that flat-rank DIMMs would introduce during simultaneous read/write bursts. Together, these attributes ensure your data center infrastructure delivers uncompromising reliability and throughput where it matters most.

Endurance & Reliability

General Virtualization
For dense VM consolidation, deploy this 128 GB RDIMM in a balanced multi-channel configuration. Populate a dual-socket server with eight modules (one per channel) to reach 1 TB total capacity while maintaining full memory bandwidth for reliable VM failover and live migration.

In-Memory Database
Latency-sensitive in-memory databases like Redis or SAP HANA benefit from registered ECC stability and quad-rank density. Install at least four identical 128 GB sticks per CPU to achieve 512 GB, ensuring data integrity under sustained high-throughput caching and real-time analytics loads.

High Performance Computing
HPC clusters handling large-scale simulations require maximum per-node capacity with minimal DIMM count. Use two 128 GB quad-rank RDIMMs per memory controller in a balanced population to deliver generous headroom for memory-bound workloads while preserving cooling efficiency in dense rack deployments.

Verified Compatibility

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

FAQ