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| Product Type | Memory Module |
|---|---|
| Memory Capacity | 64 GB |
| Memory Technology | DDR4 |
| Product Voltage | 1.2 V |
| RAM Speed | 2666 MHz |
| RAM Standard | DDR4-2666/PC4-21300 |
| Error Identifying | ECC |
| Signal Type | Registered |
| Column Access Strobe (CAS) | CL19 |
| Rank | Quad Rank x4 |
| Quantity of Pins | 288-pin |
| RAM Genre | RDIMM |
This 64GB DDR4-2666 Registered ECC RDIMM is engineered for server platforms running memory-intensive workloads such as virtualization and in-memory databases, where its Quad Rank x4 organization maximizes capacity per channel while maintaining signal integrity through registered clocking. The module’s ECC protection and CL19 latency deliver critical data reliability and deterministic performance under sustained, heavy load conditions.
1. 64GB capacity per module drastically increases memory density in rack servers, allowing more virtual machines and larger databases to reside in physical RAM without swapping to slower storage.
2. ECC protection silently corrects single-bit errors in real time, preserving data integrity for mission-critical workloads like financial ledgers or scientific simulations.
3. Registered buffering strengthens command and address signals across fully loaded memory channels, making it possible to scale to multi-terabyte configurations reliably in enterprise deployments.
4. Quad Rank x4 organization maximizes DRAM chip count on a single stick, delivering high logical capacity for in-memory analytics while maintaining manageable electrical load through careful rank interleaving.
5. DDR4-2666 speed translates to a peak bandwidth of over 21 GB/s per channel, keeping modern multi-core server CPUs fed with data during heavy concurrent request processing.
When you are building a virtualized cluster or running an in-memory database like SAP HANA, the memory you choose directly dictates uptime and query performance. The Micron MTA72ASS8G72LZ-2G6J1R is a 64GB DDR4-2666 RDIMM engineered for exactly these enterprise workloads, and its four core characteristics translate into tangible business resilience. The ECC technology continuously corrects single-bit errors and detects multi-bit faults, preventing silent data corruption that could crash a hypervisor hosting dozens of virtual machines or return inaccurate financial calculations. Registered signal buffering stabilizes the command and address buses, allowing a dual-socket server to support all 24 or 32 DIMM slots at full capacity without signal degradation, so you can scale to terabytes of RAM for large consolidation projects. The quad-rank x4 organization leverages rank interleaving to increase effective memory bandwidth under heavy concurrent access, sharply reducing latency spikes when multiple VMs contend for shared resources. Pairing that with a massive 64GB per module means you can load an entire transactional database into memory, eliminating disk I/O bottlenecks and accelerating real-time analytics. For your data center, this translates to fewer application timeouts, higher virtualization density, and the confidence that your infrastructure will not fail silently under pressure.
Server Memory Identified
This is a 64GB DDR4-2666 Registered ECC RDIMM (Quad Rank x4, CL19, 1.2V) designed for server-class platforms. Its ECC and registered buffer ensure data integrity and signal stability under heavy, sustained workloads.
General Virtualization
For dense virtualization hosts, populate at least four to eight modules per CPU to balance capacity and memory bandwidth. A typical two-socket server with 16 DIMM slots can run 8×64GB (512GB total) for hundreds of VMs, while keeping memory channels evenly loaded for reliable performance.
In-Memory Database
Maximize capacity using a balanced configuration across all memory channels—such as 12×64GB (768GB) per socket—to hold entire datasets in RAM and minimize swap. One DIMM per channel (1DPC) at rated speed avoids clock-down penalties, giving low-latency, high-throughput operations critical for real-time analytics.
High-Performance Computing (HPC)
Populate all memory channels symmetrically—commonly 8 or 16 identical 64GB RDIMMs per node—to achieve full memory interleaving and peak bandwidth. Quad-rank modules at 2666MHz suit bandwidth-sensitive simulations, and ECC corrects transient errors during multi-day compute runs, preserving result accuracy.
Rigorously tested and compatible with servers including Dell PowerEdge R740, HPE ProLiant DL380 Gen10, and Lenovo ThinkSystem SR650.
Q: Can I mix this MTA72ASS8G72LZ-2G6J1R with other memory modules of different brands or speeds?
A: Mixing different brands or speeds is strongly discouraged. It can cause system instability, POST failures, or unrecognized capacity. For guaranteed compatibility, use identical modules with the same Micron part number across all channels.
Q: Is this memory compatible with my server system?
A: This 64GB DDR4-2666 ECC RDIMM is compatible with Intel Xeon Scalable and AMD EPYC platforms supporting Registered DIMMs. Please verify your server board’s QVL and ensure 288-pin RDIMM support in the memory configuration guide.
Q: What is the recommended DIMM population order for optimal performance?
A: Follow your server board's manual. Typically, populate identical modules in each channel’s first slot first. As a quad-rank RDIMM, check per-channel rank limits—many platforms support up to 2 DIMMs per channel with this density.
Q: Does this module support overclocking or XMP profiles?
A: No. This is a JEDEC-standard ECC Registered DIMM built for enterprise stability and data integrity. It does not support overclocking or XMP profiles. It operates at fixed 2666MHz with CL19 timings.
Q: What warranty and typical failure rate can I expect?
A: We provide a 1-year limited warranty. These enterprise-grade modules exhibit extremely low failure rates, typically with an annualized failure rate (AFR) well below 0.5% under normal server operating conditions.