General

Engineer's Note

This 64GB DDR4-2666 Registered ECC module with a quad-rank configuration and CL19 latency is purpose-built for server platforms, excelling in memory-intensive workloads such as virtualization and in-memory databases where data integrity and high capacity per channel are critical. The registered signal type and ECC ensure robust signal stability across multiple ranks and automatic error correction, making it a reliable choice for enterprise-class deployments that demand 24/7 operational resilience.

Technical Specs & Insights

1. A 64 GB capacity per module dramatically increases memory density in server nodes, enabling a higher number of virtual machines per physical host and reducing total cost of ownership.
2. ECC protection actively corrects single-bit errors and detects multi-bit faults, safeguarding transactional databases and in-memory analytics from silent data corruption.
3. Registered signal architecture buffers the command and address bus, preserving signal integrity across fully populated memory channels and ensuring stable 24/7 operation under heavy load.
4. Quad Rank organization packs more DRAM devices onto the module, maximizing total memory capacity per channel for in-memory databases and large-scale virtualization without sacrificing reliability.
5. DDR4-2666 bandwidth provides a balanced throughput of 21.3 GB/s per module, efficiently feeding multi-core server CPUs and sustaining consistent performance in consolidated workloads.

Why These Specs Matter

For modern data centers running dense virtualization clusters and real-time in-memory databases, the Micron 64 GB DDR4-2666 RDIMM (MTA72ASS8G72PSZ-2S6) transforms how you protect uptime and accelerate transactions. Its ECC technology detects and corrects single-bit memory errors—silent data corruption that could crash a hypervisor hosting dozens of virtual machines or distort a financial record inside Redis. Registered logic re-drives address and command signals, ensuring rock-solid stability when populating all 24 DIMM slots in a 2U server; that means you scale memory to massive capacities without sacrificing signal integrity. The Quad Rank organization interleaves banks across four internal ranks, delivering higher sustained bandwidth under concurrent workloads like a virtual desktop infrastructure boot storm or a high-throughput SAP HANA query. With 64 GB on a single module, you can run larger VM footprints and bigger database tables entirely in memory, eliminating latency-inducing storage I/O and shrinking your licensing costs per gigabyte of usable RAM. At 1.2 V, this module also trims overall power budgets, which counts heavily in a densely packed rack where every watt is measured.

Endurance & Reliability

General Virtualization
For general virtualization hosts, this 64GB quad-rank RDIMM is an excellent building block. A pair of these modules in dual-channel configuration provides 128GB per node, comfortably running 20–30 moderate VMs. We recommend populating at least two DIMMs per CPU socket to leverage memory interleaving and maintain balanced performance.

In-Memory Database
In-memory databases like Redis or SAP HANA demand extreme capacity and low latency. Deploy six or eight of these 64GB RDIMMs per server to reach 384–512GB, keeping the entire dataset in RAM. The ECC and registered design guarantees data integrity and signal stability under heavy, sustained write loads, which is critical for transactional consistency.

High-Performance Computing
HPC workloads thrive on memory bandwidth, so install six or eight identical modules to populate all memory channels on dual-socket servers. This quad-rank module maximizes capacity per channel but may reduce frequency slightly; balance by filling all channels to maintain throughput. ECC protection here safeguards long-running simulations against silent data corruption.

Verified Compatibility

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

FAQ