General

Engineer's Note

This DDR4-3200 Registered ECC RDIMM with a dual-rank x4 organization and CL22 latency is engineered for data integrity and high memory density in server platforms, making it ideal for virtualization, in-memory databases, and enterprise workloads that demand reliable 24/7 operation. The registered signal type and 64 GB capacity ensure stable signal integrity across fully loaded memory channels, enabling seamless scaling in dual-socket or multi-DIMM configurations.

Technical Specs & Insights

1. High-density 64GB capacity dramatically increases virtual machine density per server, giving data centers the headroom to consolidate more workloads without sacrificing memory allocation.
2. DDR4-3200 bandwidth accelerates in-memory databases and real-time analytics, ensuring large datasets move quickly between storage and compute under heavy enterprise loads.
3. Integrated ECC continuously corrects single-bit errors, safeguarding data integrity in mission-critical applications where even silent bit flips can compromise financial or scientific results.
4. Registered signal buffering stabilizes high-capacity memory arrays, enabling fully populated server boards to operate reliably without signal degradation across all DIMM slots.
5. Dual Rank x4 organization keeps the memory bus fully saturated through bank interleaving, delivering predictable low-latency performance during peak virtualization and multi-tenant processing.

Why These Specs Matter

The M393A8G40BB4-CWEBY is a 64GB DDR4-3200 RDIMM purpose-built for enterprise servers, where its four core attributes become business-critical. ECC protection silently corrects single-bit errors, preventing a flipped bit from crashing your hypervisor and taking down dozens of VMs, or from silently corrupting records in a transactional database. Registered buffering stabilizes command and address signals across fully loaded memory channels, which is essential when you need to maximize capacity in a dense virtualization host without risking signal-related instability. The generous 64GB capacity per module lets you pack enough RAM into fewer sockets to run an in-memory platform like SAP HANA, keeping hot data near the CPU and avoiding costly scale-out. Dual-rank x4 organization and 3200MT/s throughput with CL22 latency leverage bank interleaving for higher sustained bandwidth. The result: more responsive VMs, faster database queries, and integrity you can trust under relentless 24/7 workloads.

Endurance & Reliability

General Virtualization
Equip a dual-socket server by populating all 8 or 16 memory channels with these 64 GB RDIMMs to deliver 512 GB or 1 TB of balanced capacity, essential for consolidating numerous VMs. Start with at least one module per channel and scale in matched groups, preserving NUMA symmetry and avoiding performance penalties.

In-Memory Database
For large in-memory workloads, install these 64 GB ECC Registered DIMMs in a 1‑DIMM‑per‑channel configuration to maintain the full 3200 MT/s speed. A four‑socket server fully populated with 48 modules yields 3 TB, ideal for real‑time analytics. Configure mirroring with identical spare modules to ensure high availability.

High Performance Computing
Maximize bandwidth by deploying one 64 GB Dual‑Rank RDIMM per channel (1DPC) across all available channels, preventing frequency drops tied to 2DPC. Populate each compute node with 8 or 12 modules (512–768 GB) to match core counts and memory‑bound codes. Standardizing on these low‑latency CL22 DIMMs cluster‑wide guarantees predictable, repeatable performance.

Verified Compatibility

Rigorously tested and compatible with Dell PowerEdge R750, HPE ProLiant DL380 Gen10 Plus, Lenovo ThinkSystem SR650 V2.

FAQ