General

Engineer's Note

Designed for server-class deployments, this 64GB DDR5-4800 registered ECC RDIMM is ideally suited for memory-intensive workloads such as virtualization, in-memory databases, and demanding enterprise applications requiring uncompromising data integrity. Its dual-rank x4 organization enhances memory interleaving for superior bandwidth efficiency, while the registered signal architecture and ECC correction jointly ensure robust signal stability and real-time error protection under heavy load.

Technical Specs & Insights

1. High-capacity module supports dense server virtualization, allowing hypervisors to host more guest VMs and large in-memory databases without resorting to slower storage swapping.
2. DDR5 architecture doubles burst length and improves per-bit energy efficiency, directly accelerating parallel data processing and real-time analytics in multi-socket deployments.
3. Elevated transfer speed ensures each CPU core receives ample bandwidth, eliminating memory-side bottlenecks during heavy transactional workloads and enterprise application serving.
4. ECC error correction shields against silent data corruption by detecting and repairing single-bit faults, a foundational safeguard for financial ledgers and patient record systems.
5. Registered command buffering stabilizes signal paths across fully populated memory channels, enabling reliable 24/7 uptime in rack-scale data center environments.

Why These Specs Matter

Designed as a server-class RDIMM, the Micron MTC40F2046S1RC48BA1R directly addresses the most demanding data center workloads. Its 64 GB capacity combined with registered signal buffering means you can densely populate memory channels without compromising signal integrity. In a virtualized cluster running dozens of VMs, this stability is non-negotiable—it prevents electrical loading issues that would otherwise crash critical hosts. The integrated ECC tirelessly corrects single-bit errors, a vital safeguard that protects your in-memory database from silent data corruption that could skew financial calculations or customer records. Meanwhile, the dual-rank x4 architecture significantly boosts bandwidth by interleaving data across internal banks. When your Redis or SAP HANA instance processes millions of queries per second, this parallelized access slashes latency and raises throughput. An exceptionally low CAS latency of 4 cycles further accelerates each transaction, delivering near-instant responses to time-sensitive analytics. Finally, operating at an energy-efficient 1.1 V, the module reduces thermal stress in dense rack environments, sustaining 24/7 reliability for your virtualized infrastructure and real-time data engines.

Endurance & Reliability

This is a server-class memory module: a 64GB DDR5-4800 Registered ECC RDIMM (288-pin, dual-rank x4, 1.1V). The following capacity planning scenarios assume a modern dual-socket server platform with eight memory channels per CPU.

General Virtualization
Achieve a solid balance of capacity and speed by installing eight 64GB modules (512GB total) in a 1 DIMM per channel (1DPC) configuration across both CPUs. This delivers full DDR5-4800 bandwidth and robust ECC protection, essential for hosting dozens of virtual machines. Leave half the slots free for future scaling to 1TB without replacing existing DIMMs.

In-Memory Database
Maximize capacity to keep entire datasets in DRAM. Fully populate all 16 DIMM slots per CPU with 64GB RDIMMs for 1TB per socket (2TB total in a dual-socket system). Expect a speed reduction to DDR5-4400 at 2DPC, but the massive memory pool and error correction outweigh the slight bandwidth loss. ECC is non-negotiable for financial or transactional in-memory stores.

High-Performance Computing
HPC workloads crave memory bandwidth. Use a symmetric 16-module configuration across two CPUs—one 64GB DIMM per channel (1DPC, 512GB per CPU, 1TB total) to sustain the full 4800 MT/s speed. This balanced populating maximizes aggregate throughput for MPI or OpenMP codes. If simulations demand more than 1TB, shift to 2DPC carefully and accept a minor clock penalty, but always keep channels balanced to avoid NUMA bottlenecks.

Verified Compatibility

Rigorously tested for compatibility with Dell PowerEdge R760, HPE ProLiant DL380 Gen11, Lenovo ThinkSystem SR650 V3, and more.

FAQ