General

Engineer's Note

Designed for enterprise server platforms, this 64GB DDR4-3200 RDIMM leverages registered signaling and ECC to ensure signal integrity and data reliability in high-density deployments. The dual-rank x4 organization optimizes memory bandwidth and interleaving, making it ideally suited for virtualization, in-memory databases, and latency-sensitive workloads where stability under sustained load is critical.

Technical Specs & Insights

1. A 64GB capacity per module dramatically increases memory density per server node, allowing far more virtual machines to run concurrently without resorting to costly scale-out architectures.
2. Registered signal buffering stabilizes command and address lines under massive memory populations, which is essential for maintaining uptime in multi-socket servers with dozens of DIMMs.
3. ECC protection silently corrects single-bit memory errors in real time, safeguarding transactional databases and in-memory analytics from silent data corruption.
4. Dual Rank x4 organization leverages rank interleaving to overlap memory access cycles, delivering sustained bandwidth under the heavy, parallelized I/O of containerized microservices.
5. The 3200 MT/s data rate elevates overall memory bandwidth per channel, directly accelerating large-scale data processing and reducing latency spikes during concurrent user loads.

Why These Specs Matter

Enter the M393A8G40AB2-CWEGY, a 64GB DDR4-3200 Registered ECC memory module that squarely addresses the punishing demands of modern server infrastructure. Its four core characteristics are not just specifications on a datasheet; they are critical enablers of business continuity and workload density.

ECC error correction actively scrubs single-bit memory faults in the background. For a virtualized cluster hosting dozens of mission-critical VMs, a silent bit flip in the hypervisor’s memory space could cascade into data corruption across a finance database or a customer records system. ECC turns that invisible threat into a logged, corrected event, safeguarding transactional integrity. The Registered buffer is equally vital: it re-drives address and command signals, allowing a server to fully populate all 24 or 32 DIMM slots per node without signal collapse. This means your ESXi host can comfortably scale to terabyte-class capacity for dense virtual desktop infrastructure or large in-memory databases. Combined with a Dual Rank x4 organization, the 3200 MT/s speed leverages rank interleaving to sustain high bandwidth under the concurrent read/write bursts common in Redis or SAP HANA, slashing query latency even as user concurrency spikes. Ultimately, the massive 64GB density per stick reduces the number of DIMMs needed to reach a target capacity, lowering power draw and freeing channels for future expansion while ensuring your database server caches more hot data, not just more overhead.

Endurance & Reliability

Capacity Planning for Samsung M393A8G40AB2-CWEGY 64GB DDR4-3200 ECC RDIMM

This module is a registered server memory DIMM (RDIMM) with ECC, built for dual-socket and multi-channel platforms. For balanced capacity and throughput in typical 8-channel per CPU systems, populate at least one DIMM per channel.

General Virtualization
Deploy four to eight 64GB modules (256–512GB total) across both processors, ensuring symmetrical population for uniform memory access. This configuration provides ample headroom for dozens of virtual machines while maintaining low consolidation ratios and reliable ECC protection.

In-Memory Database
Maximize capacity per channel by fully loading all 16 DIMM slots with 64GB RDIMMs, delivering 1TB at two DIMMs per channel (2DPC). This supports large in-memory datasets with acceptable latency, critical for real-time analytics and caching layers.

High-Performance Computing
Populate one 64GB RDIMM per channel across all 16 channels (1DPC) for peak 3200 MT/s bandwidth. This yields 1TB at the highest possible speed, essential for memory-bandwidth-bound simulations and modeling codes. Dual-rank x4 construction on each module already optimizes bank interleaving.

Verified Compatibility

64GB DDR4-3200 RDIMM rigorously tested, compatible with Dell R750, HPE DL380 Gen10+, Lenovo SR650 V2, Cisco C240 M6.

FAQ