General

Engineer's Note

Designed for server platforms, this DDR4-2933 Registered ECC module with dual-rank x8 organization delivers reliable data integrity and enhanced signal stability in memory-intensive workloads such as virtualization and in-memory databases. Its CL21 latency and 1.2V operating voltage balance efficient power consumption with consistent registered command/address signaling for high-density deployments.

Technical Specs & Insights

1. ECC protection transparently corrects single-bit errors and detects multi-bit corruption, safeguarding financial transaction logs and in-memory databases against silent data decay in 24/7 operation.
2. Registered signal buffering decouples the memory controller from the DRAM load, allowing fully populated server boards to maintain 2933 MT/s stability across all channels without signal degradation.
3. Sixteen-gigabyte module capacity provides a dense building block for hypervisors, enabling a dual-socket host to comfortably allocate hundreds of gigabytes for VM consolidation without sacrificing DIMM slot headroom.
4. Dual Rank x8 organization interleaves accesses across two independent rank groups per module, effectively increasing command rate utilization and sustaining throughput under heavily threaded enterprise workloads.
5. DDR4-2933 delivers 23.4 GB/s of peak bandwidth per module, accelerating real-time analytics and shortening query completion times in scale-out cloud infrastructure.

Why These Specs Matter

Engineered for the data center, the Samsung M393A2K43BB3-CVF is a 16GB DDR4-2933 Registered DIMM (RDIMM), instantly identifiable by its ECC, registered signal type, and 288-pin form factor. Its four foundational characteristics translate directly into mission-critical reliability where downtime is not an option.

First, the integrated Error Correcting Code (ECC) continuously detects and corrects single-bit memory errors—silent data corruption that can cascade into financial miscalculations or database inconsistencies. In an in-memory database like SAP HANA, this means every transaction remains mathematically accurate. Second, the registered buffer stabilizes the electrical load on the memory bus, enabling a server to populate all 24 DIMM slots without signal degradation; for a virtualization cluster running dozens of VMs, that translates to massive, stable capacity for live migration and growth. Third, the dual-rank x8 organization smartly interleaves access across two internal blocks, yielding measurably higher sustained bandwidth under the heavy concurrent reads of a hypervisor hosting mixed workloads. Finally, operating at a low 1.2V, it drives down thermal output and energy cost across a rack-scale deployment, directly reducing your total cost of ownership while preserving performance headroom for peak analytic queries.

Endurance & Reliability

General Virtualization
Install one 16GB RDIMM per memory channel (e.g., 6‑channel platform → 96GB) to give the hypervisor balanced capacity and bandwidth. The registered ECC design maintains multi‑VM stability, and symmetric population avoids NUMA throughput penalties common in mixed‑tenant environments.

In‑Memory Database
Maximize capacity by filling all slots with two 16GB modules per channel (2DPC), often reaching 384GB or beyond. The dual‑rank x8 organization sustains solid transfer rates, while ECC eliminates silent data corruption critical for real‑time transactional systems. Accept a mild frequency drop if the platform requires it to prioritize dataset size.

HPC
For bandwidth‑sensitive workloads, equip every memory channel with exactly one 16GB RDIMM to preserve the full DDR4‑2933 speed and minimum latency. A dual‑socket server with 16 such modules (256GB) exploits dual‑rank interleaving, delivering the sustained throughput required by parallel simulation and modeling codes.

Verified Compatibility

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

FAQ