General

Engineer's Note

This DDR4-2933 32GB RDIMM is engineered for server platforms, optimally suited for virtualization, in-memory databases, and enterprise workloads that demand data integrity and high capacity. Its dual-rank x4 organization maximizes memory bandwidth utilization through bank interleaving, while the registered ECC design ensures robust signal integrity and single-bit error correction across dense server memory channels.

Technical Specs & Insights

1. Error-correcting code memory proactively detects and corrects single-bit errors, safeguarding transactional data integrity in always-on enterprise databases.
2. Registered signal buffering stabilizes command and address lines, allowing large memory populations essential for dense virtualization hosts.
3. Dual-rank organization interleaves accesses across internal banks, sustaining peak bandwidth to avert bottlenecks during multi-tenant cloud workloads.
4. A 32-gigabyte module footprint expands total system memory headroom, enabling more virtual machines and in-memory caches without physical server sprawl.
5. DDR4-2933 transfer rate elevates per-channel throughput, accelerating real-time analytics and rapid data replication across clustered nodes.

Why These Specs Matter

When you deploy the M393A4K40CB2-CVFC0, a 32GB DDR4-2933 Registered ECC RDIMM, you are not simply installing memory—you are hardening the foundation of your entire server infrastructure. In a dense virtualization cluster running dozens of VMs, this module’s ECC proves indispensable: it silently corrects single-bit errors caused by cosmic radiation or electrical noise, preventing silent data corruption that could crash a hypervisor or flip a financial transaction unnoticed. Meanwhile, the Registered buffer acts as a command-signal steward, stabilizing the electrical load so you can populate all 24 DIMM slots per node without signal degradation—critical when scaling to terabytes of RAM for an in-memory database like SAP HANA. The dual-rank x4 design interleaves access across two internal banks, delivering measurably higher sustained bandwidth under concurrent queries and reducing latency spikes during peak OLTP loads. And with the 1.2V operation at 2933 MT/s, you get that throughput with a power footprint that respects your data center’s thermal envelope, saving cooling costs across a fleet. This combination means your virtualized workloads and real-time analytics run on a memory subsystem that actively protects data integrity, handles massive capacity with unwavering signal fidelity, and accelerates parallel access patterns where performance truly counts.

Endurance & Reliability

This DDR4-2933 Registered ECC RDIMM (32GB, Dual Rank x4) is a server‑grade module. Below is capacity planning guidance for three common server workloads.

General Virtualization
For a dual‑socket server with eight memory channels per CPU, populate each channel with one 32GB module (16 modules, 512GB total). This balanced layout avoids downclocking, delivers sufficient capacity for dozens of VMs with moderate overcommitment, and leaves expansion slots free.

In‑Memory Database
Maximise capacity to keep entire datasets in DRAM. Fully populate all channels with two 32GB dual‑rank DIMMs per channel (2DPC) on a 12‑channel per socket platform to reach 768GB per CPU. Although speed may drop to 2666MT/s, the massive footprint eliminates disk swapping. Populate both sockets identically for symmetric NUMA access.

High‑Performance Computing
Prioritise bandwidth and low latency over density. Install exactly one 32GB DIMM per channel (1DPC) to maintain the rated 2933MT/s and CL21 timings. An eight‑channel compute node thus provides 256GB of balanced, high‑throughput memory, ensuring predictable performance for MPI, simulation codes, and memory‑bound parallel tasks.

Verified Compatibility

Rigorously tested RDIMM, compatible with Dell PowerEdge R740, HPE ProLiant DL380 Gen10, Lenovo ThinkSystem SR650, and more.

FAQ