General

Engineer's Note

This Samsung M393A1K43BB0-CRC is a DDR4-2400 Registered DIMM with ECC, purpose-built for server platforms handling virtualization, in-memory databases, and mission-critical workloads where data integrity is paramount. Its registered signal architecture provides superior electrical stability on high-density memory channels, while the single-rank x8 configuration and CL17 latency deliver a balanced combination of bandwidth efficiency and predictable response times for consolidated enterprise environments.

Technical Specs & Insights

1. Registered DIMM architecture stabilizes high-density server memory channels, enabling reliable operation when fully populating banks for large-scale virtualization.
2. ECC protection continuously corrects single-bit errors, preserving data integrity in mission-critical databases and preventing silent corruption during extended uptime.
3. Registered signal buffering reduces electrical loading on the memory controller, ensuring consistent signal quality across multiple ranks in dense cloud server racks.
4. The 8GB capacity per module strikes a balance for cost-effective memory tiering, allowing precise resource allocation in containerized microservice clusters.
5. 2400MHz transfer speed delivers steady mainstream bandwidth, sustaining predictable throughput for concurrent transactional workloads without excessive power draw.

Why These Specs Matter

The M393A1K43BB0-CRC is an 8GB DDR4-2400 Registered DIMM purpose-built for server environments, where uncompromised uptime and data integrity define business outcomes. Its ECC technology actively corrects single-bit memory errors before they can silently corrupt transactional data inside virtualized clusters—imagine a hypervisor hosting dozens of VMs; a flipped bit in shared memory could crash critical services or distort financial records, but ECC eliminates that risk by detecting and fixing errors in real time. The Registered signal buffering re-drives command and address signals across fully loaded memory channels, preventing signal degradation that otherwise causes random boot failures or unexplained instability when maximizing memory density for large-scale databases. Operating at 1.2V, this module meaningfully reduces power consumption and thermal stress across a rack of servers, directly lowering cooling costs and extending hardware lifespan in 24/7 data centers. With a Single Rank x8 organization and CL17 latency at 2400MHz, it delivers predictable, consistent bandwidth for memory-hungry workloads such as in-memory databases like Redis or SAP HANA, where microsecond response variations directly impact real-time analytics and end-user experience. This is enterprise memory engineered to make capacity, reliability, and energy efficiency work together, not against each other.

Endurance & Reliability

General Virtualization
For dense VM consolidation, deploy this 8GB RDIMM in a balanced population across all memory channels. A typical dual-socket server requires at least one DIMM per channel to maintain bandwidth, so install six or eight identical modules for a 48–64GB pool, leaving headroom for moderate overcommitment. Avoid mixing single-rank modules with dual-rank DIMMs on the same channel to preserve signal integrity and predictable latency.

In-Memory Database
Latency-sensitive workloads like Redis or SAP HANA demand large, contiguous memory spaces and error resilience, making registered ECC essential. Populate all available channels with these 8GB RDIMMs to achieve the highest possible capacity within your server’s rank limits, aiming for 256GB or more per node. A single rank x8 configuration reduces electrical loading, helping sustain 2400MT/s at CL17 even with fully loaded channels.

High-Performance Computing
HPC applications benefit from bandwidth over raw capacity per DIMM, so use these modules to populate every channel uniformly for maximum memory interleaving. A balanced configuration of one DIMM per channel across two sockets delivers consistent 19.2 GB/s per channel throughput, minimizing bottlenecks in MPI-parallel simulations. The registered interface and low 1.2V operation also reduce thermal stress in dense rack deployments, improving cluster stability during extended runs.

Verified Compatibility

Rigorously tested for compatibility with servers like Dell PowerEdge R740/R750, HPE ProLiant DL380 Gen10, Lenovo ThinkSystem SR650.

FAQ