M393A2K43BB1-CTD Samsung 16GB PC4-21300 DDR4 SDRAM Ecc Reg Memory

Samsung M393A2K43BB1-CTD 16GB Memory

The Samsung M393A2K43BB1-CTD is a High-Performance 16GB DDR4 SDRAM server memory module engineered for reliability and speed. Designed with ECC registered technology, this RDIMM ensures stable data processing and enhanced integrity for enterprise-grade systems.

General Information

• Brand Name: Samsung
• Part Number: M393A2K43BB1-CTD
• Product Type: 16GB DDR4 Registered DIMM Memory

Technical Specifications

• Capacity: 16GB single module
• Memory Type: DDR4 SDRAM
• Speed Rating: 2666 MT/s (PC4-21300)
• Error Correction: ECC support for dependable data accuracy
• Module Configuration: 2Rx8 architecture
• Latency: CL19 timing for balanced efficiency
• Signal Handling: Registered design for optimized server workloads

Physical Attributes

• Form Factor: 288-pin RDIMM
• Voltage Requirement: 1.2V for energy-efficient operation

Compatibility

• Optimized for enterprise servers and data centers
• Supports platforms requiring ECC registered DDR4 modules
• Ideal for mission-critical applications demanding stability and speed

Samsung 16GB PC4-21300 DDR4 Memory Overview

The Samsung M393A2K43BB1-CTD belongs to the enterprise-grade DDR4 registered DIMM server memory category, a segment engineered specifically for reliability, scalability, and sustained performance in professional computing environments. This category focuses on memory modules designed to operate continuously under heavy workloads in servers, data centers, and mission-critical systems where stability is non-negotiable. Unlike consumer desktop memory, DDR4 RDIMM server memory integrates architectural features that support higher capacities, improved signal integrity, and predictable behavior under multi-socket and multi-channel configurations. At the heart of this category is DDR4 SDRAM technology operating at 2666MT/s, also referred to as PC4-21300. This speed grade represents a balance between bandwidth efficiency and power optimization, making it ideal for enterprise platforms that prioritize long-term operational consistency over short bursts of peak performance. The Samsung M393A2K43BB1-CTD exemplifies how this category addresses the evolving demands of modern server infrastructures, including virtualization, cloud computing, database management, and enterprise application hosting.

Registered DIMM Design

The defining characteristic of this category is the use of registered DIMM architecture, commonly abbreviated as RDIMM. In registered memory modules, a register or buffer is placed between the memory controller and the DRAM chips. This register reduces the electrical load on the memory controller by buffering command and address signals, allowing systems to support a greater number of memory modules without compromising stability. For platforms that require large memory footprints, such as dual-socket or quad-socket servers, RDIMM memory is essential. The Samsung M393A2K43BB1-CTD demonstrates the advantage of this category by enabling higher population densities per memory channel while maintaining reliable signal timing. This characteristic becomes increasingly important as server motherboards scale up in complexity and memory capacity requirements grow with virtualization density and in-memory data processing.

Server Scalability

Within this category, registered memory modules are chosen specifically to maximize scalability. By reducing signal reflections and electrical noise, RDIMM designs allow server architects to populate all available DIMM slots without encountering the instability issues that unbuffered memory would face. This scalability directly translates into higher total system memory capacity, which is critical for workloads such as large-scale databases, ERP systems, and hyper-converged infrastructure deployments.

ECC

Error Correction Code functionality is a foundational requirement of this category. ECC memory is designed to detect and correct single-bit memory errors and detect multi-bit errors, ensuring data integrity during continuous operation. The Samsung M393A2K43BB1-CTD incorporates ECC as a standard feature, reflecting the broader category’s emphasis on reliability and fault tolerance. In server environments, even minor memory errors can propagate into significant system issues, including application crashes, corrupted data, or unexpected downtime. ECC functionality mitigates these risks by continuously monitoring memory operations and correcting errors transparently, without interrupting system processes. This makes ECC registered memory a cornerstone of enterprise computing, particularly in industries such as finance, healthcare, telecommunications, and scientific research.

Reliability

The category of ECC RDIMM server memory is particularly suited for applications where data accuracy is paramount. Virtualized environments, for example, often host multiple workloads on a single physical server. A memory error in such an environment can impact multiple virtual machines simultaneously. ECC protection ensures that these environments remain stable, even under sustained memory utilization. The Samsung M393A2K43BB1-CTD, operating at a 1.2V nominal voltage, further enhances reliability by reducing thermal stress and power fluctuations, both of which can contribute to memory errors over time. This voltage efficiency aligns with modern server design goals that emphasize energy efficiency alongside performance.

DDR4

This category leverages DDR4 SDRAM technology, which represents a significant advancement over previous DDR3 standards. DDR4 introduces higher data transfer rates, improved bank group architecture, and reduced operating voltage. At 2666MT/s, the Samsung M393A2K43BB1-CTD provides ample memory bandwidth to support multi-core processors and parallel workloads common in contemporary servers. Bandwidth efficiency is particularly important in systems running modern CPUs with high core counts. As processors execute more threads simultaneously, memory subsystems must deliver data consistently to avoid bottlenecks. The PC4-21300 rating of this category ensures that memory bandwidth keeps pace with processor demands, enabling balanced system performance.

CAS Latency

The CL19 latency specification of this memory category reflects a design optimized for throughput and stability rather than ultra-low latency. In server workloads, overall system performance is influenced more by sustained bandwidth and memory capacity than by marginal latency differences. CL19 is a common and well-supported latency for DDR4-2666 RDIMM modules, ensuring broad compatibility with enterprise server platforms. Within this category, latency values are carefully validated to operate reliably under continuous load. Samsung’s server memory modules undergo extensive qualification testing to ensure that latency and timing parameters remain stable across temperature variations and long operational cycles.

Dual Rank

The 2Rx8 configuration of the Samsung M393A2K43BB1-CTD reflects another key attribute of this category. Dual-rank memory modules effectively present two logical memory ranks to the memory controller, allowing improved utilization of the memory bus. This configuration can enhance performance in certain server architectures by enabling better interleaving and parallel access patterns. The x8 DRAM organization within this category balances performance and reliability. x8 chips are commonly used in ECC memory modules because they allow effective error correction while maintaining efficient data access. This design choice supports the category’s emphasis on reliability without sacrificing throughput.

Thermal

The 1.2V operating voltage is a defining feature of the DDR4 RDIMM server memory category. Compared to earlier generations, DDR4 reduces power consumption per bit transferred, contributing to lower overall system power draw. In data center environments, where energy costs and thermal management are significant considerations, this efficiency translates into tangible operational savings. Lower voltage operation also reduces heat generation at the module level, supporting more stable thermal conditions within densely populated server chassis. The Samsung M393A2K43BB1-CTD exemplifies how this category supports modern cooling strategies, including high-density airflow designs and advanced thermal monitoring.

Compatibility

The 288-pin DIMM form factor defines the physical interface of this category. This standardized design ensures compatibility with a wide range of DDR4-capable server motherboards and processor platforms. The pin layout supports the electrical and signaling requirements of DDR4 RDIMM modules, including ECC functionality and registered buffering. The Samsung M393A2K43BB1-CTD adheres strictly to JEDEC specifications, which is a critical requirement within this category. Compliance with industry standards ensures interoperability across server platforms from major manufacturers, reducing deployment risk and simplifying system upgrades.

Integration

Server memory categories such as this are designed to integrate seamlessly with contemporary server chipsets and CPUs from leading vendors. Compatibility extends beyond physical fit to include timing parameters, voltage levels, and firmware support. This holistic compatibility ensures that memory operates at its rated specifications without manual tuning, which is essential in enterprise environments where consistency and predictability are valued.

Use Cases

The category encompassing the Samsung M393A2K43BB1-CTD serves a broad range of enterprise and cloud computing use cases. Virtualization platforms benefit from the module’s capacity and reliability, enabling higher virtual machine density and more efficient resource allocation. Database servers leverage the stable bandwidth and ECC protection to maintain data integrity during intensive read and write operations. In cloud infrastructure, where servers operate continuously and at scale, memory reliability directly impacts service availability. DDR4 ECC RDIMM modules are a foundational component in such environments, providing the consistency required to meet service-level agreements and customer expectations.