MEM-DR512L-HL02-ER56 Supermicro 128GB DDR5 5600MHz PC5-44800 ECC RDIMM RAM

Supermicro 128GB DDR5 DIMM Memory

The Supermicro MEM-DR512L-HL02-ER56 is a high-capacity 128GB DDR5 RDIMM designed for enterprise-grade servers. Engineered for speed, reliability, and efficiency, this module ensures optimal performance in demanding computing environments.

Main Information

• Brand: Supermicro
• Model Number: MEM-DR512L-HL02-ER56
• Category: 128GB DDR5 Registered DIMM

Technical Specifications

Memory Capacity and Technology

• Storage Size: 128GB
• Technology Type: DDR5 SDRAM
• Standard: DDR5-5600 / PC5-44800

Performance Attributes

• Speed: 5600MHz
• Error Correction: ECC (Error-Correcting Code)
• Signal Type: Registered
• Rank Organization: 2Rx4 (Dual Rank)

Physical Characteristics

Form Factor

• Design: 288-pin RDIMM
• Profile: Low-profile module

Dimensions and Weight

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

MEM-DR512L-HL02-ER56 128GB PC5 SDRAM Memory Overview

The Supermicro MEM-DR512L-HL02-ER56 128GB DDR5 5600MHz PC5-44800 ECC Registered CL46 2rx4 1.1v 288-pin Low-profile RDIMM Server Memory Module belongs to the high-capacity DDR5 registered server memory category, a segment designed to support modern data centers, enterprise servers, cloud infrastructure, and mission-critical computing environments. This category represents a significant evolution from previous DDR4-based memory solutions, delivering higher bandwidth, improved power efficiency, and enhanced reliability features that are essential for contemporary server workloads. DDR5 RDIMM modules are specifically engineered to meet the demands of scalability, stability, and sustained performance under continuous operation.

DDR5 Registered DIMM Architecture and Its Role in Servers

DDR5 Registered DIMMs, commonly referred to as RDIMMs, are a cornerstone of enterprise server architecture. Unlike unbuffered memory, RDIMM modules incorporate a register between the memory controller and the DRAM chips, which reduces the electrical load on the memory controller. This architectural design enables servers to support larger memory capacities and more populated memory channels without compromising signal integrity or performance. In the context of the Supermicro MEM-DR512L-HL02-ER56, the registered design allows the module to operate reliably at 5600MHz while maintaining stability across dense memory configurations.

Advantages of Registered Memory in Multi-Socket Platforms

Multi-socket server platforms, which are common in enterprise and cloud deployments, benefit significantly from registered memory. RDIMM modules provide improved signal buffering that ensures consistent data transmission even when multiple CPUs access memory simultaneously. This characteristic is particularly important in virtualization, database processing, and large-scale analytics, where memory bandwidth and reliability directly influence system responsiveness. The Supermicro 128GB DDR5 RDIMM fits seamlessly into such environments, supporting high memory density without introducing electrical instability.

High-Capacity 128GB Configuration for Memory-Intensive Workloads

The 128GB capacity of this server memory module positions it firmly within the high-density memory category. This capacity is designed for workloads that demand substantial in-memory data processing, such as large relational databases, in-memory analytics engines, enterprise resource planning systems, and virtualization platforms hosting numerous virtual machines. High-capacity modules reduce the need for excessive DIMM population, enabling more efficient memory channel utilization and simplified server configurations.

Impact of Large Memory Modules on System Scalability

Using 128GB RDIMM modules allows system architects to scale memory capacity more efficiently while preserving available DIMM slots for future expansion. This approach supports long-term infrastructure planning and reduces the frequency of hardware upgrades. In environments where uptime and predictability are critical, the ability to scale memory without reconfiguring the entire server is a valuable advantage. The Supermicro MEM-DR512L-HL02-ER56 aligns with this strategy by offering high capacity within a single low-profile module.

DDR5 5600MHz Key Characteristics

Operating at 5600MHz, this DDR5 server memory module delivers a substantial increase in bandwidth compared to earlier generations. DDR5 technology introduces architectural enhancements such as increased bank groups and improved prefetch mechanisms, which collectively enhance data throughput. For server workloads that rely on rapid data access, including AI inference, real-time analytics, and high-performance computing, the increased memory speed translates into measurable performance gains.

PC5-44800 Bandwidth and Its Practical Benefits

The PC5-44800 designation reflects the theoretical maximum bandwidth available from this DDR5 module. Higher bandwidth enables processors to access data more efficiently, reducing latency bottlenecks in memory-intensive operations. In enterprise environments where multiple applications compete for memory resources, higher bandwidth helps maintain consistent performance levels. The Supermicro 128GB DDR5 RDIMM is optimized to sustain these bandwidth levels under continuous load, making it suitable for demanding server applications.

Error Correction Code Reliability for Mission-Critical Systems

ECC, or Error Correction Code, is a defining feature of enterprise-grade server memory. ECC technology detects and corrects single-bit memory errors in real time, significantly reducing the risk of data corruption and system crashes. In mission-critical environments such as financial services, healthcare systems, and cloud data centers, data integrity is paramount. The inclusion of ECC in the Supermicro MEM-DR512L-HL02-ER56 ensures that memory operations remain accurate and reliable even under heavy workloads.

ECC Registered Memory and Long-Term Stability

The combination of ECC and registered architecture enhances long-term system stability. Registered ECC memory is specifically designed for continuous operation, often running 24 hours a day, seven days a week. By minimizing the occurrence and impact of memory errors, ECC RDIMM modules help maintain system uptime and reduce the likelihood of costly downtime. This reliability makes them an essential component in enterprise server builds.

Latency Considerations in Server Applications

Server workloads are generally optimized for parallel processing and sustained throughput rather than ultra-low latency. Applications such as virtualization, container orchestration, and large-scale data processing benefit more from consistent bandwidth and stability than minimal access times. The Supermicro 128GB DDR5 RDIMM is designed to deliver predictable performance characteristics that align with these workload requirements.

2Rx4 Memory Organization Explained

The 2Rx4 configuration indicates that the module uses two ranks with x4 DRAM devices. This organization enhances memory efficiency and reliability by allowing better error detection and correction compared to x8 configurations. In server environments, x4-based RDIMM modules are often preferred because they provide improved fault tolerance and compatibility with advanced memory controllers.

Benefits of Dual-Rank Memory Modules

Dual-rank memory modules can improve memory interleaving, which enhances overall memory performance by allowing the memory controller to alternate access between ranks. This design can lead to more efficient utilization of available bandwidth, particularly in multi-core and multi-socket systems. The 2Rx4 structure of the Supermicro MEM-DR512L-HL02-ER56 supports balanced performance and reliability across a wide range of server configurations.

Low-Profile 288-Pin RDIMM Form Factor

The low-profile 288-pin RDIMM form factor is designed to ensure compatibility with a broad range of server chassis and motherboard layouts. Low-profile modules are particularly important in dense server environments, where airflow and physical clearance are critical considerations. By adhering to industry-standard dimensions, this Supermicro memory module can be integrated into both rack-mounted and blade server systems without mechanical constraints.

Thermal and Mechanical Advantages of Low-Profile Design

Low-profile memory modules contribute to improved airflow within server enclosures, which helps maintain optimal operating temperatures. Effective thermal management is essential for preserving memory performance and longevity, especially in high-density deployments. The design of the Supermicro 128GB DDR5 RDIMM supports efficient cooling strategies commonly employed in enterprise data centers.

1.1V Operating Voltage and Energy Efficiency

DDR5 memory operates at a reduced voltage of 1.1V compared to previous DDR generations, contributing to improved energy efficiency. Lower operating voltage reduces overall power consumption and heat generation, which is especially beneficial in large-scale server deployments where energy costs and thermal management are significant concerns. The Supermicro MEM-DR512L-HL02-ER56 leverages DDR5’s power efficiency to support sustainable and cost-effective data center operations.

Power Efficiency in High-Density Memory Configurations

When deploying multiple high-capacity memory modules, even small reductions in voltage can result in substantial energy savings. Power-efficient memory helps data centers reduce cooling requirements and maintain stable operating conditions. This efficiency aligns with modern data center initiatives focused on optimizing performance per watt while minimizing environmental impact.

Compatibility with Modern Server Platforms

This category of DDR5 RDIMM server memory is designed for compatibility with the latest server platforms that support DDR5 technology. It is engineered to work seamlessly with enterprise-grade motherboards and processors that are optimized for high-speed, high-capacity memory configurations. Supermicro memory modules are typically validated for use in Supermicro server systems, ensuring reliable integration and predictable performance.

Importance of Vendor-Validated Server Memory

Using vendor-validated memory modules reduces the risk of compatibility issues and simplifies system deployment. In enterprise environments, validated components help ensure that servers operate as intended under a wide range of workloads. The Supermicro MEM-DR512L-HL02-ER56 fits within this category, providing confidence in compatibility and operational stability.