General

Engineer's Note

As a Registered ECC DDR4-3200 module in a single-rank x4 configuration, this 32GB RDIMM is engineered for enterprise-class servers and workstations, excelling in memory-intensive workloads such as virtualization and in-memory databases where dual-level error correction and signal integrity are critical. The single-rank design minimizes electrical load on the memory channel, enabling higher population density and stable operation at 3200MT/s with a modest CL22 latency.

Technical Specs & Insights

1. ECC detection and correction silently eliminates single-bit memory errors, preserving transactional integrity in mission‑critical databases and preventing data corruption during continuous operation.
2. Registered DIMM architecture buffers address and control signals, allowing dense memory configurations that keep virtualization platforms stable as hundreds of VMs scale.
3. A 32GB capacity per module maximizes memory density per channel, letting a single server consolidate more containers, virtual desktops, and in‑memory workloads without swapping to slower storage.
4. DDR4‑3200 speed delivers up to 25.6 GB/s of bandwidth per DIMM, accelerating real‑time analytics and in‑memory cache refreshes under heavy query loads.
5. Single‑rank x4 design reduces bus loading on each channel, maintaining signal integrity at full speed and ensuring consistent low latency for latency‑sensitive enterprise applications like high‑frequency trading.

Why These Specs Matter

The M393A4G40BB3-CWEBQ is a server-grade DDR4 RDIMM engineered to address data centers’ most pressing needs: data integrity, scalable capacity, and responsive performance. In a dense virtualization cluster, a single uncorrected memory error can silently corrupt a virtual machine’s state or crash an entire host; the on-die ECC actively detects and corrects single-bit errors, preventing costly downtime and data loss for every guest you run. Its registered architecture buffers command and address signals, sustaining signal integrity when you fully populate all memory channels—this means you can deploy multi-terabyte footprints across a 2U server without instability, a decisive advantage when consolidating hundreds of VMs. Each 32-Gigabyte module enables high-density build-outs, letting you run memory-hungry workloads on fewer physical nodes and delaying expensive hardware refreshes. For in-memory databases like SAP HANA or Redis, the 3200MT/s speed combined with a single-rank x4 organization delivers the consistent low-latency bandwidth required for real-time analytics and high-throughput transactions, translating directly into faster query responses and more revenue-critical insights. Operating at just 1.2 volts, it also curbs power consumption and cooling loads, which steadily reduces total cost of ownership while preserving round-the-clock reliability.

Endurance & Reliability

General Virtualization
Install six to eight identical 32GB RDIMMs (192–256GB) across all memory channels to support 20–30 VMs comfortably. The single-rank x4 registered DDR4-3200 design maintains the rated speed and delivers the ECC reliability essential for multi-tenant environments.

In-Memory Database
Fully populate a dual-socket server’s 16 DIMM slots with these 32GB modules to achieve 512GB of in-memory capacity. Symmetric channel loading ensures consistently low latency. Even at two DIMMs per channel, the light single-rank x4 construction minimizes clock-speed reductions, preserving near-peak throughput for databases like SAP HANA.

High Performance Computing
For bandwidth-bound HPC, deploy exactly one DIMM per channel—eight modules yield 256GB at the full 3200MT/s. Single-rank x4 RDIMMs present a minimal electrical load, letting the memory controller sustain peak frequency across all channels. Empty slots leave a clear upgrade path to 512GB when capacity demands increase.

Verified Compatibility

Validated for Dell PowerEdge R750, HPE ProLiant DL380 Gen10 Plus, Lenovo ThinkSystem SR650 V2, and more.

FAQ