General

Engineer's Note

Designed for enterprise servers, this 64GB DDR4-3200 RDIMM with ECC and a dual-rank x4 configuration ensures data integrity and stable operation under heavy multi-threaded loads. It is ideally suited for memory-intensive workloads like virtualization and in-memory databases, where the registered signal type and CL22 latency provide reliable, high-density performance on compatible platforms.

Technical Specs & Insights

1. A massive 64GB capacity per module maximizes memory density in rack servers, directly supporting more concurrent virtual machines and larger in-memory databases without resorting to slower storage.
2. Integrated ECC corrects single-bit errors in real time, preventing silent data corruption in mission-critical enterprise applications and preserving data integrity across 24/7 operation.
3. The registered signal architecture buffers command and address signals, stabilizing signal integrity in multi-DIMM configurations crucial for scaling up to terabyte-class server memory.
4. Dual-rank design with x4 DRAM chips interleaves access across internal banks, sustaining high bandwidth utilization and reducing latency under heavy, simultaneous read/write workloads.
5. DDR4-3200 transfer rate delivers 25.6 GB/s peak bandwidth per channel, accelerating real-time analytics and transaction processing that feed hungry multi-core server CPUs.

Why These Specs Matter

The Samsung M393A8G40AB2-CWEGQ is a 64GB DDR4-3200 RDIMM purpose-built for enterprise servers, where its four defining characteristics—ECC, Registered driver, Dual Rank x4 organization, and 3200MT/s speed—directly confront real-world reliability and performance demands. In dense virtualization clusters, the Registered Clock Driver buffers command and address signals, enabling you to populate all memory channels with high-capacity modules without signal degradation. This guarantees that dozens of virtual machines run reliably on a single host, while on-die ECC continuously corrects single-bit errors that would otherwise cause silent data corruption and unplanned downtime for your tenants. In in-memory databases such as SAP HANA or Redis, the Dual Rank x4 configuration interleaves accesses across multiple banks, and the 3200MT/s transfer rate ensures the sustained bandwidth needed for sub-millisecond response times even under peak concurrent queries. It directly ensures workload stability, data integrity, and predictable performance when it matters most.

Endurance & Reliability

Capacity Planning for a 64GB DDR4-3200 Registered ECC DIMM (Server Memory)
This 1.2V RDIMM is purpose‑built for server environments. The following plans address three critical workloads.

General Virtualization
Populate one DIMM per memory channel to achieve balanced performance. A dual‑socket server with eight channels per socket can host sixteen of these 64GB modules (1TB), providing ample memory for 30–50 VMs. Scale linearly by adding equal sets, and always keep each channel populated identically.

In-Memory Database
Max capacity demands filling every DIMM slot. A typical 2U server with 24 slots loaded with 24 identical 64GB RDIMMs yields 1.5TB—perfect for Redis, Memcached, or SAP HANA. Strictly use the same dual‑rank x4 part number; enable NUMA interleaving and keep the memory‑to‑core ratio above 8GB/core.

High-Performance Computing
To sustain peak 3200MT/s, install one DIMM per channel. An 8‑channel dual‑socket server fitted with 8 modules (512GB) meets the bandwidth demands of CAE and molecular dynamics. For memory‑capacity‑bound jobs, move to 16 modules (1TB) at 2DPC, but confirm that the system BIOS keeps the speed at 3200MT/s without downclocking.

Verified Compatibility

Rigorously tested 64GB DDR4 ECC RDIMM server memory, compatible with Dell R750, HPE DL380 Gen10 Plus, Lenovo SR650 V2.

FAQ