General

Engineer's Note

This 64GB DDR4-2400 Registered ECC RDIMM (Quad Rank x4, CL17) is purpose-built for enterprise servers and is ideally suited for memory-intensive workloads such as virtualization, in-memory databases, and transactional systems where uncompromising data integrity is critical. The Quad Rank x4 configuration maximizes per-channel capacity and memory interleaving bandwidth, while the Registered signal architecture and integrated ECC deliver superior electrical stability and automatic single-bit error correction across fully populated multi-DIMM configurations.

Technical Specs & Insights

1. High-capacity 64GB RDIMM boosts virtual machine density per physical host, directly reducing server sprawl and licensing overhead in consolidated data centers.
2. Hardware ECC immediately detects and corrects single-bit errors, safeguarding transactional databases and financial records from silent data corruption around the clock.
3. Registered clocking architecture stabilizes command and address signals across fully populated memory channels, which is essential for maintaining uptime in dense multi-slot server deployments.
4. Quad Rank x4 organization maximizes bank-level parallelism, sustaining high bandwidth under the complex mixed read/write workloads typical of in-memory analytics engines.
5. 2400MT/s throughput keeps latency-sensitive operations responsive, preventing memory bottlenecks when numerous virtualized workloads simultaneously stream data.

Why These Specs Matter

The Samsung M386A8K40BM1-CRC4Q is engineered for the data center, not the desktop. As a 64GB DDR4-2400 Registered DIMM with ECC, it directly addresses the critical pain points of enterprise IT: unplanned downtime and data corruption. The ECC technology silently detects and corrects single-bit memory errors caused by background radiation, a vital safeguard when a flipped bit in a financial transaction database or a hypervisor’s memory space could crash an entire virtualized environment. The registered buffer re-drives address and command signals, stabilizing the memory bus so you can populate all 24 DIMM slots in a dual-socket server with 1.5TB of RAM without signal degradation—this is non-negotiable for scaling dense private clouds.

Meanwhile, the quad-rank x4 organization and CL17 latency are not just specifications; they are enablers of real-time analytics. In an in-memory database like SAP HANA, quad-rank design allows deeper interleaving, significantly boosting bandwidth for simultaneous read/write operations across massive datasets. This means faster financial forecasting or real-time fraud detection without memory bottlenecks. This module transforms server reliability from a constant worry into a silent, foundational asset.

Endurance & Reliability

General Virtualization
For dense virtualization hosts running multiple VMs, this 64GB Registered ECC DIMM is ideal. Deploy a minimum of four modules in a quad-channel configuration on platforms like Intel Xeon Scalable to provide 256GB of balanced capacity and memory bandwidth. Stick to identical DIMMs per channel to avoid performance penalties and maintain memory RAS features.

In-Memory Database
In-memory databases such as Redis or SAP HANA demand large, reliable capacity and low latency. A configuration of 12 identical 64GB RDIMMs per socket delivers 768GB of protected memory, with ECC guarding against data corruption. Populate all memory channels evenly to maximize throughput; avoid mixing ranks beyond Quad Rank to keep command rates at 2T and ensure stability under heavy write loads.

High-Performance Computing (HPC)
HPC workloads benefit from both capacity and bandwidth. Use six or eight of these Quad Rank x4 RDIMMs per two-socket node to achieve 384–512GB while preserving full memory speed. Populate one DIMM per channel initially to run at 2400MT/s; adding a second Quad Rank DIMM per channel will drop speed to 1866MT/s, so plan socket count and per-node memory targets carefully to avoid bandwidth starvation in MPI jobs.

Verified Compatibility

Strictly tested, fully compatible with Dell PowerEdge R740, Lenovo ThinkSystem SR650, HPE ProLiant DL380 Gen10.

FAQ