M393B2K70CM0-YF8 Samsung 16GB RAM DDR3 SDRAM 1066Mhz Pc3-8500 Ecc Reg

Samsung 16GB DDR3 ECC RDIMM

General Information

• Brand: Samsung
• Model Number: M393B2K70CM0-YF8
• Item Name: 16GB DDR3 SDRAM Server Memory Module

Technical Specifications

Capacity & Technology

• Storage Size: 16GB
• Memory Type: DDR3 SDRAM
• Module Count: 1 x 16GB

Performance Details

• Bus Speed: 1066 MT/s (PC3-8500)
• Error Correction: ECC (Error-Correcting Code)
• Signal Type: Registered DIMM
• Latency Timing: CL7
• Rank Design: Quad Rank x4

Physical Attributes

Form Factor

• 288-pin RDIMM structure

Dimensions & Weight

• Height: 1.00 inch
• Depth: 6.75 inches
• Weight: 0.20 lb

Performance Benefits

• Quad Rank architecture enhances multitasking
• 1066 MT/s speed delivers efficient throughput

M393B2K70CM0-YF8 DDR3 ECC Memory Overview

The Samsung M393B2K70CM0-YF8 16GB PC3-8500 DDR3-1066Mt/s 4RX4 RDIMM ECC Memory belongs to a specialized enterprise memory category designed to support mission-critical server and workstation environments. This category focuses on registered dual in-line memory modules that emphasize stability, data integrity, predictable latency behavior, and long-term operational reliability. Products within this category are typically deployed in data centers, virtualization platforms, database servers, enterprise applications, and legacy server infrastructures that require consistent performance under sustained workloads.

DDR3 registered ECC memory occupies an important position in the lifecycle of enterprise computing platforms. While newer memory generations exist, DDR3 remains widely deployed across countless production systems due to its proven stability, platform compatibility, and cost efficiency. The Samsung M393B2K70CM0-YF8 exemplifies the characteristics of this category by combining high-density capacity, error correction capabilities, and registered buffering to support multi-processor architectures and large memory footprints.

DDR3 PC3-8500 Memory Architecture

PC3-8500 DDR3 memory operates at an effective data rate of 1066 megatransfers per second, aligning with platforms that prioritize compatibility and power efficiency over raw frequency scaling. This performance class is particularly suited to enterprise servers released during the transition period from DDR2 to DDR3, where stability and memory controller limitations dictate optimal operating speeds. The Samsung M393B2K70CM0-YF8 module is engineered to deliver consistent throughput at this frequency while maintaining signal integrity across densely populated memory channels.

In this category, memory performance is evaluated not only by transfer rates but also by sustained bandwidth, latency consistency, and behavior under multi-rank access patterns. PC3-8500 modules are often paired with server-grade chipsets and CPUs that leverage triple-channel or dual-channel memory configurations. The design ensures balanced data access across ranks and channels, supporting predictable performance for applications such as virtualization hosts, enterprise resource planning systems, and transactional databases.

Registered DIMM Design and Signal Integrity

Registered DIMMs, also known as buffered DIMMs, form a core aspect of this memory category. The inclusion of a register between the memory controller and the DRAM chips reduces the electrical load on the controller, allowing for increased memory capacity and improved signal integrity. The Samsung M393B2K70CM0-YF8 leverages this architecture to support dense configurations across multi-socket server platforms.

In enterprise environments, registered memory is essential for scaling system memory beyond the limitations of unbuffered modules. By isolating the controller from direct communication with each DRAM chip, RDIMMs enable more predictable timing and reduced signal degradation. This design is especially beneficial in systems with multiple CPUs and large numbers of memory slots.

ECC Implementation in DDR3 RDIMM Modules

The ECC mechanism within this category operates transparently, requiring no intervention from applications or operating systems beyond platform support. Memory controllers designed for ECC continuously verify data integrity during read and write operations. The Samsung M393B2K70CM0-YF8 adheres to industry standards for ECC implementation, ensuring seamless integration with supported chipsets.

This level of protection is particularly valuable in environments where servers operate continuously for months or years. ECC memory reduces the likelihood of unpredictable failures, contributing to higher service availability and reduced maintenance costs.

4RX4 Rank and Chip Organization

The 4RX4 configuration defines the internal organization of the memory module, indicating four ranks composed of x4-wide DRAM chips. This configuration is characteristic of high-density enterprise memory modules and is a key aspect of this category. The Samsung M393B2K70CM0-YF8 uses this architecture to deliver 16GB of capacity while maintaining compatibility with server memory controllers designed to handle multiple ranks.

Multi-rank modules allow memory controllers to interleave access across ranks, improving effective bandwidth and reducing access latency under certain workloads. The x4 chip organization also enhances reliability, as it works synergistically with ECC mechanisms to provide robust error detection and correction.

Thermal Characteristics and Power Efficiency

Thermal management is a critical consideration in enterprise memory categories. DDR3 RDIMM modules such as the Samsung M393B2K70CM0-YF8 are designed to operate within strict thermal envelopes, ensuring stable performance even in densely populated server chassis. The PC3-8500 operating speed contributes to lower power consumption compared to higher-frequency alternatives.

Lower operating voltages and conservative timing parameters help minimize heat generation, reducing the burden on cooling systems. This is particularly important in data centers where thermal efficiency directly impacts operational costs. The category prioritizes designs that balance performance, capacity, and power efficiency.

Long-Term Reliability Under Continuous Load

Memory modules in this category are validated for continuous operation, often undergoing extensive burn-in and stress testing. The Samsung M393B2K70CM0-YF8 reflects this focus on longevity, making it suitable for servers that remain powered on around the clock. Stable thermal behavior reduces component wear and extends the usable lifespan of the memory.

This emphasis on reliability aligns with enterprise requirements for predictable system behavior and minimal downtime. As a result, DDR3 RDIMM ECC memory remains a trusted choice for legacy and transitional platforms.

Compatibility with Legacy and Transitional 

The Samsung M393B2K70CM0-YF8 category addresses the ongoing need for memory solutions compatible with older server architectures. Many organizations continue to operate DDR3-based systems due to application dependencies, certification requirements, or cost considerations. This category ensures that such systems can be maintained and expanded without compromising stability.

DDR3 RDIMM ECC modules are widely supported by server platforms from multiple generations, making them a versatile option for system upgrades and replacements. The emphasis on JEDEC compliance ensures that modules integrate seamlessly into a broad range of hardware configurations.