General

Engineer's Note

This 64GB DDR4-2933 Registered ECC module, built on a quad-rank x4 organization, is engineered for enterprise servers handling memory-intensive workloads such as virtualization, in-memory databases, and data analytics. Its 1.2V operating voltage and ECC with a registered signal path ensure superior data integrity and signal stability in fully populated high-capacity configurations, minimizing downtime and maintaining performance under sustained load.

Technical Specs & Insights

1. Error correction capability isolates and corrects memory faults on the fly, ensuring continuous uptime for critical enterprise services.
2. Registering command and address signals stabilizes multi-DIMM configurations, essential for scaling memory in hyper-converged infrastructure nodes.
3. Quad Rank x4 design fully populates the memory bus with parallel banks, boosting sustainable throughput under mixed virtual machine workloads.
4. Dense module capacity enables hosting expansive in-memory databases and numerous containers per node, maximizing server consolidation ratios.
5. High memory bandwidth accelerates simultaneous data streams to multiple CPU cores, reducing latency spikes in high-frequency trading and AI inference platforms.

Why These Specs Matter

The M386A8K40DM2-CVFCO is a 64GB DDR4-2933 Registered DIMM built explicitly for mission-critical server environments where downtime is not an option. Its ECC technology silently detects and corrects single-bit memory errors, directly shielding your virtualized cluster from silent data corruption that could crash hypervisors or distort financial transaction records during high-frequency trading. Registered signal buffering stabilizes the command and address buses, enabling you to fully populate all 24 slots in a rack server without signal degradation — this means you can confidently allocate memory to dozens of virtual machines without risking boot failures. The module’s Quad Rank x4 architecture uses rank interleaving to boost effective bandwidth, so an in-memory database like Redis or SAP HANA processes concurrent queries with measurably lower latency under peak loads. Operating at 2933MT/s with a low 1.2V power envelope, it delivers this robust capacity and error protection while driving down energy costs in dense data center deployments. Ultimately, this module translates directly into safer transactions, higher VM density, and faster real-time analytics.

Endurance & Reliability

General Virtualization
For dense VM consolidation, deploy these 64 GB DDR4‑2933 Registered ECC modules in a balanced configuration. Start with four modules (256 GB total) per dual‑socket server, placing one DIMM per memory channel to maintain full bandwidth while avoiding rank‑related speed drops. Scale to eight modules (512 GB) when the host supports eight channels—ideal for running 30‑40 typical virtual machines without memory contention.

In‑Memory Database
Maximize capacity by populating every available RDIMM slot, leveraging the quad‑rank x4 design for maximum density. In a two‑socket server with 24 slots, 24 × 64 GB yields 1.5 TB of ECC‑protected memory for SAP HANA or Redis clusters. The registered signal type ensures stable operation even with all channels fully loaded, and ECC guards against in‑memory errors critical to transactional consistency.

High Performance Computing
Prioritize consistent bandwidth by using one DIMM per channel (1DPC) to keep 2933 MT/s speed bins. A single‑socket server with eight channels can be fitted with eight of these 64 GB RDIMMs (512 GB) to feed many core‑heavy workloads like CFD or molecular dynamics. While quad‑rank modules slightly increase latency, the registered buffered architecture maintains signal integrity across large channel counts, and the 1.2 V low‑voltage operation helps manage thermal profiles in dense compute racks.

Verified Compatibility

Validated for servers: Dell PowerEdge R740/R640, HPE ProLiant DL380 Gen10, Lenovo ThinkSystem SR650.

FAQ