General

Engineer's Note

Designed for server platforms, this Samsung 16GB DDR4-2933 RDIMM (M393A2K40CB2-CVFCQ) with ECC and registered signal type ensures data integrity in virtualized environments and in-memory databases. Its single-rank x4 configuration reduces electrical loading on the memory bus, enabling higher density scalability with stable CL21 latency at 1.2V.

Technical Specs & Insights

1. ECC protection silently corrects single-bit errors, preventing data corruption in financial transaction logs and keeping mission-critical services online without interruption.
2. Registered signal buffering stabilizes command and address lines across fully populated server slots, which is essential for scaling memory capacity in large virtualization clusters.
3. The single-rank x4 organization reduces per-channel electrical load, allowing memory controllers to sustain higher transfer rates needed for in-memory database caching.
4. DDR4 technology at a low 1.2-volt baseline lowers the thermal profile of dense rack deployments, directly contributing to sustained turbo frequencies and reduced cooling overhead.
5. Moderate module capacity strikes a balance between cost-optimized provisioning and generous headroom, letting IT architects deploy more VMs per host without exhausting their memory budget.

Why These Specs Matter

When this M393A2K40CB2-CVFCQ DDR4-2933 RDIMM goes into your server, you’re securing business continuity. Its ECC corrects single-bit errors instantly—a necessity for a virtualization cluster where a rogue bit flip could crash a hypervisor or corrupt a financial database. Registration buffers the command/address lines, allowing you to fill every DIMM slot without signal degradation, so you can assemble massive, stable memory pools for an in-memory database like Redis or SAP HANA. The single-rank x4 design keeps electrical loading low, helping maintain the full 2933MT/s throughput even in densely populated servers while delivering consistent CL21 access latency under heavy load. At 1.2V, it also slashes power consumption across a rack—crucial when your data center OPEX is under scrutiny. In production, this translates to always-on virtual machines, zero silent data corruption, and database queries that complete at the speed of memory, not storage.

Endurance & Reliability

General Virtualization
In virtualized environments running multiple VMs, memory is often the first resource to become constrained. A balanced approach pairs one 16GB RDIMM per populated channel to maintain optimal memory bandwidth while leaving slots free for future scaling. We recommend starting with four modules (64GB total) in a dual-socket server to comfortably host 15–20 light to medium workloads.

In-Memory Database
In-memory databases like Redis or SAP HANA demand both high capacity and data integrity, making registered ECC modules non-negotiable. Dense configurations using 16GB single-rank RDIMMs allow you to maximize total capacity without sacrificing signal quality. Aim to populate all channels equally—for example, twelve of these modules in a two-socket system provide 192GB, enabling fast in-memory analytics with full error protection.

High Performance Computing (HPC)
HPC applications require balanced memory bandwidth and capacity to feed parallel computation efficiently. Installing one 16GB RDIMM per memory channel minimizes latency and sustains the rated 2933 MT/s speed, which is critical for tightly coupled workloads. For memory-bandwidth-bound simulations, a fully populated configuration of eight modules per socket delivers optimum throughput while keeping large datasets resident in protected ECC memory.

Verified Compatibility

Rigorously tested and validated for servers like Dell PowerEdge R760, HPE ProLiant DL380 Gen10, Lenovo ThinkSystem SR650, and more.

FAQ