MEM-DR464L-SL01-LR26 Supermicro 64GB 2666Mhz Pc4-21300 Lrdimm Memory Module

Supermicro MEM-DR464L-SL01-LR26 64GB 2666Mhz Memory

General Information

• Manufacturer: Supermicro
• Part Number: MEM-DR464L-SL01-LR26
• Product Name: 64GB PC4-2666V-L Load Reduced 4Rx4 LRDIMM Memory

Technical Specifications

• Storage Capacity: 64GB
• Memory Technology: DDR4 SDRAM
• Number of Modules: 1 x 64GB
• Bus Speed: 2666MHz DDR4-21300/PC4-2666V-L
• Signal Type: Load Reduced
• CAS Latency: CL19
• Pin Count: 288-pin
• Operating Voltage: 1.20V
• Component Rank: 4DRx4

Physical Characteristics

• Form Factor: 288-pin LR-DIMM
• Shipping Dimensions: 1.00" height x 6.75" depth
• Shipping Weight: 0.20 lbs

Supermicro MEM-DR464L-SL01-LR26 64GB Memory Overview

The Supermicro MEM-DR464L-SL01-LR26 64GB DDR4 LRDIMM memory module belongs to the enterprise-class load reduced memory category designed for maximum scalability, stability, and capacity in advanced server environments. This category specifically addresses the needs of high-density computing platforms where traditional registered memory may reach architectural limits. Load Reduced DIMM technology enables servers to support significantly larger memory capacities per socket while maintaining signal integrity and operational reliability.

DDR4 Load Reduced memory modules are engineered for data centers, enterprise servers, virtualization platforms, and large-scale database systems that require massive memory footprints. By isolating the memory controller from the electrical load of the DRAM devices, LRDIMM technology allows more ranks and higher-capacity modules to be installed without degrading performance. This category is essential for organizations that rely on memory-intensive workloads and long-term infrastructure scalability.

Positioning of LRDIMM Memory Within Server Architectures

Load Reduced memory occupies a specialized subcategory within enterprise server memory solutions. While RDIMM memory focuses on balancing capacity and stability, LRDIMM memory is optimized for extreme capacity expansion. This positioning makes LRDIMM modules ideal for systems that must maximize memory per CPU socket, such as in-memory databases, enterprise analytics platforms, and large virtualization hosts.

By reducing the electrical burden placed on the memory controller, LRDIMM modules enable system architects to design servers that exceed the memory density limits achievable with conventional registered memory.

DDR4 SDRAM Technology Foundation

DDR4 SDRAM technology provides the foundation for modern enterprise memory solutions, delivering higher data transfer rates, increased module density, and improved power efficiency compared to earlier generations. This memory category leverages DDR4 advancements to support stable operation at high capacities while maintaining energy efficiency required for data center deployments.

The Supermicro 64GB DDR4 LRDIMM module operates at 2666MHz, a widely supported frequency that balances performance and compatibility across enterprise server platforms. DDR4-2666 memory is commonly used in systems that prioritize stability and scalability, ensuring predictable performance under sustained workloads.

PC4-21300 Bandwidth Characteristics

The PC4-21300 classification represents a theoretical memory bandwidth of up to 21.3GB per second per module. This level of throughput supports enterprise workloads that involve frequent memory access, such as transactional databases, virtualization, and analytics applications.

While higher-frequency memory tiers exist, DDR4-2666 remains a practical choice for large-scale memory configurations where capacity and reliability are the primary design goals.

Load Reduced DIMM Architecture and Functionality

Load Reduced DIMM technology introduces an advanced memory buffer that handles both command and data signals between the memory controller and the DRAM chips. This buffering significantly reduces the electrical load seen by the memory controller, enabling support for higher rank counts and larger memory capacities per channel.

Unlike standard RDIMM memory, which buffers only command and address signals, LRDIMM memory buffers data signals as well. This distinction allows LRDIMM modules to present a simplified electrical profile to the memory controller, improving scalability and signal integrity.

Electrical Load Reduction and System Stability

By isolating the memory controller from the complexity of multiple DRAM devices, LRDIMM memory improves signal quality and reduces timing challenges. This architectural advantage is critical in multi-socket systems where memory channels are heavily populated.

Improved signal integrity translates into higher reliability, fewer memory-related errors, and more consistent performance across large memory configurations.

64GB High-Capacity Memory Module Classification

The 64GB capacity places this Supermicro DDR4 LRDIMM module within the high-density memory category. High-capacity modules are essential for modern enterprise workloads that require extensive in-memory data processing, such as large-scale virtualization, enterprise resource planning systems, and in-memory databases.

High-density memory modules reduce the number of DIMMs required to achieve target system memory capacities. This approach improves airflow, reduces power consumption associated with memory channels, and simplifies system configuration.

Benefits of High-Density Memory Deployment

Deploying fewer high-capacity memory modules allows organizations to maximize memory capacity while preserving DIMM slots for future expansion. This strategy supports long-term scalability and reduces the need for frequent hardware upgrades.

High-density memory configurations also enhance system manageability by reducing the complexity of memory population rules.

2666MHz Operating Frequency and Enterprise Stability

The 2666MHz operating frequency represents a stable and widely supported speed tier within the DDR4 LRDIMM category. DDR4-2666 memory is validated across a broad range of enterprise server platforms, ensuring compatibility and predictable performance.

This frequency tier is particularly suitable for large memory configurations where stability and consistency are more important than maximum clock speed. DDR4-2666 provides sufficient bandwidth to support multi-core processors and memory-intensive applications.

Performance Consistency Under Heavy Load

Enterprise systems often operate under continuous and heavy workloads. DDR4-2666 LRDIMM memory delivers consistent performance characteristics, ensuring that applications experience stable memory access times even as system load increases.

Consistency is critical for enterprise applications that rely on predictable response times and sustained throughput.

CAS Latency CL19 and Timing Characteristics

The CL19 CAS latency rating reflects the timing profile of this DDR4 LRDIMM module. Lower latency values contribute to faster memory access, improving responsiveness for applications that frequently interact with memory.

In enterprise environments, latency must be balanced with capacity and stability. The CL19 timing ensures reliable operation at 2666MHz while supporting large memory configurations enabled by LRDIMM architecture.

Latency Behavior in High-Capacity Systems

High-capacity memory systems introduce additional complexity in memory access patterns. Stable and predictable latency helps maintain balanced performance across CPU sockets and memory channels.

Optimized timing characteristics support workloads such as database queries, virtualization scheduling, and analytics processing.

Quad Rank Memory Architecture

Quad Rank memory architecture is a defining feature of high-density LRDIMM modules. A quad rank DIMM presents four independent ranks of memory to the memory buffer, enabling significantly higher memory capacity within a single module.

This architecture allows servers to achieve extreme memory densities that are not possible with single or dual rank RDIMM modules. Quad rank LRDIMM memory is commonly used in systems designed for large in-memory datasets.

Scalability Advantages of Quad Rank Design

Quad rank memory enables higher memory capacity per DIMM slot, allowing servers to scale memory without increasing the number of installed modules. This design supports efficient use of available DIMM slots and memory channels.

Enhanced scalability makes quad rank LRDIMM memory ideal for enterprise workloads that continue to grow in size and complexity.

Error Correction and Data Integrity Considerations

Enterprise DDR4 LRDIMM memory incorporates advanced error correction mechanisms to protect data integrity. Error correction is essential in environments where large memory capacities increase the statistical likelihood of memory errors.

Reliable error handling ensures that single-bit memory errors are corrected automatically, reducing the risk of data corruption and system instability.

Importance of Data Accuracy in Memory-Intensive Workloads

In-memory databases and analytics platforms rely on accurate data stored in RAM. Memory errors can compromise results and lead to incorrect business decisions. Error correction mechanisms within enterprise memory help safeguard data accuracy.

Reliable memory operation supports trust in data-driven processes.

Power Efficiency and Thermal Management

DDR4 memory technology operates at lower voltage levels compared to previous generations, improving power efficiency. Load Reduced memory further enhances efficiency by optimizing signal handling, reducing unnecessary power draw.

Lower power consumption contributes to reduced heat output, which is critical in dense server environments where thermal management is a key challenge.

Thermal Stability in Data Center Deployments

Effective thermal management improves component longevity and system reliability. LRDIMM memory modules are designed to operate within defined thermal envelopes, supporting continuous operation under heavy workloads.

Stable operating temperatures help prevent performance degradation and hardware failures.

288-Pin LRDIMM Physical Form Factor

The 288-pin form factor defines the physical interface of DDR4 LRDIMM memory modules. This standardized design ensures compatibility with server motherboards that support load reduced memory.

The physical construction of LRDIMM modules is optimized for durability, signal integrity, and efficient heat dissipation, supporting stable operation in high-density configurations.

Mechanical Design for Enterprise Reliability

Enterprise memory modules use high-quality printed circuit boards and components to ensure long-term reliability. Secure seating within DIMM slots reduces the risk of intermittent connection issues.

Robust mechanical design supports repeated installation cycles and extended service life.

Compatibility with High-End Server Platforms

DDR4 LRDIMM memory is designed for compatibility with enterprise server platforms that support load reduced memory technology. These platforms typically include advanced CPUs and chipsets engineered for high memory capacity and bandwidth.

Compatibility validation ensures that LRDIMM modules integrate seamlessly with supported systems, delivering predictable performance.

Platform Validation and Qualification

Enterprise memory modules undergo extensive qualification testing to verify compatibility with specific server platforms. This process helps ensure stability and reduces deployment risks.

Validated memory configurations support vendor warranties and technical support agreements.

Database, Analytics, and In-Memory Computing Applications

Enterprise databases and analytics platforms are among the primary beneficiaries of LRDIMM memory. Large memory capacities allow entire datasets to reside in RAM, dramatically improving query performance and processing speed.

In-memory computing frameworks rely on stable and scalable memory solutions to deliver real-time insights and analytics.

Enabling Real-Time Data Processing

Real-time analytics and decision-making require fast and reliable access to large datasets. LRDIMM memory supports these requirements by enabling high-capacity, low-latency memory configurations.

Reliable memory operation ensures consistent analytical results.

Reliability Testing and Enterprise Validation

Enterprise DDR4 LRDIMM memory modules are subjected to rigorous testing to ensure reliability under continuous operation. Stress testing, thermal cycling, and signal integrity validation help ensure stable performance.

These quality assurance processes are essential for memory deployed in mission-critical environments.

Support for Always-On Enterprise Systems

Always-on systems require memory solutions that can operate continuously without failure. LRDIMM memory provides the stability and scalability needed for such environments.

Reliable memory performance contributes directly to overall system uptime.