General

Engineer's Note

The M393A1K43BB0-CPB00 is a server-grade DDR4-2133 Registered DIMM with ECC, making it ideally suited for virtualization hosts and in-memory databases where data integrity under sustained load is non-negotiable. Its registered signal architecture stabilizes multi-DIMM channels, and the CL15 latency combined with single-rank x8 organization helps maintain predictable performance in capacity-optimized enterprise platforms.

Technical Specs & Insights

1. ECC error correction detects and corrects single-bit memory faults on-the-fly, preserving transactional integrity in databases and financial processing without service interruption.
2. Registered signal buffering stabilizes command and address lines, enabling high-capacity memory configurations essential for dense virtualization and reliable multi-tenant cloud hosting.
3. Single Rank x8 organization keeps memory channels efficiently saturated, maximizing bandwidth per channel for consistent VM responsiveness under heavy consolidation workloads.
4. 1.2V low operating voltage trims datacenter power draw and thermal output, reducing cooling costs and improving energy efficiency in large-scale server deployments.
5. 2133MHz clock speed supplies steady baseline throughput, ensuring predictable latency and balanced system performance for enterprise resource planning and real-time analytics.

Why These Specs Matter

As a Registered DIMM engineered for server platforms, the Samsung M393A1K43BB0-CPB00 brings four critical capabilities to mission‑critical workloads where compromise is not an option. In a virtualisation cluster running dozens of VMs on a single host, the ECC error‑correcting code silently intercepts single‑bit memory errors caused by background radiation—flips that could otherwise corrupt a financial transaction or crash a hypervisor. For you, that means application uptime and data integrity at a level unbuffered memory cannot guarantee. The Registered signal‑buffering architecture decouples the memory bus from the DRAM chips, enabling a full bank of modules to operate stably under the ceaseless load of an in‑memory database like SAP HANA. Without it, high‑density deployments would suffer signal degradation and random reboots. The Single Rank x8 organisation keeps electrical loading low, ensuring clean command‑address signalling when all channels are populated—a decisive advantage in latency‑sensitive virtualised storage and real‑time analytics. And the 1.2 V DDR4‑2133 standard delivers the highest‑volume ecosystem compatibility, allowing a seamless, low‑power refresh cycle that respects your existing thermal and OpEx constraints while providing the predictable bandwidth essential for database query throughput. Together, these features transform a simple RAM stick into a foundation for business continuity.

Endurance & Reliability

Capacity Planning Guide

This module (M393A1K43BB0-CPB00) is a server-class DDR4-2133 8GB Registered ECC RDIMM. Its ECC and buffer circuitry are engineered for robust multi-DIMM populations in enterprise servers. The following scenarios map typical workloads to optimal configuration strategies.

General Virtualization
Balance density and symmetric channel population. For a dual-socket server, install a minimum of 4 identical modules per CPU (32 GB total) to enable quad-channel interleaving and keep NUMA zones uniform. As consolidation ratios grow, scale to 8 identical modules per socket (64 GB) and never leave memory channels empty, preventing bandwidth starvation during high overcommitment.

In-Memory Database
Latency-sensitive transactional stores demand full capacity while guarding against silent data errors. Populate all channels with identical 8 GB RDIMMs—targeting 8 modules per CPU (64 GB) or more—so entire datasets stay in RAM. The registered buffer maintains signal integrity in fully loaded slots, and ECC corrects single-bit flips that could otherwise corrupt critical in-memory structures.

High-Performance Computing (HPC)
Achieve maximum bandwidth by following the one-DIMM-per-channel (1DPC) rule. For a typical dual-socket node, install 8 symmetric 8 GB modules (64 GB total) across all channels, keeping ranks and timings identical. This uniform layout eliminates channel contention and supplies consistent peak throughput to every core, which is essential for tightly coupled parallel simulations and computational fluid dynamics.

Verified Compatibility

Rigorously tested, compatible with Dell PowerEdge R730, HPE ProLiant DL380 Gen9, and Lenovo ThinkSystem SR650.

FAQ