HMABAGR7C4R4N-VN Hynix 128GB PC4-21300 DDR4-2666mhz Sdram Ecc Registered 288-PIN Rdimm

Hynix HMABAGR7C4R4N-VN 128GB Memory Kit

The Hynix HMABAGR7C4R4N-VN represents a pinnacle of server-grade memory technology, engineered to deliver exceptional performance, reliability, and capacity for demanding data center and enterprise applications. This 128GB DDR4 RDIMM module is designed to meet the rigorous requirements of modern servers, high-performance computing (HPC) clusters, and sophisticated virtualization environments. Operating at a speed of PC4-21300 (DDR4-2666MHz), this module provides the high bandwidth necessary to keep pace with multi-core processors and data-intensive workloads, ensuring that system performance is optimized and bottlenecks are minimized.

Key Specifications

Understanding the detailed specifications of the HMABAGR7C4R4N-VN is crucial for system integration and compatibility. This module is built with precision to adhere to industry standards, ensuring seamless operation within qualified server platforms.

Memory Capacity

The module features a substantial 128GB capacity in a single 1x128GB monolithic design. This high-density architecture is essential for servers where physical memory slots are a limited resource. By populating a system with these modules, IT administrators can achieve massive total memory configurations, which is critical for in-memory databases, large-scale virtualization, and big data analytics. The 1x128GB notation confirms that this is a single module providing 128 gigabytes of memory, simplifying the procurement and installation process.

Octal Rank x4 Organization

The "Octal Rank X4" designation is a key aspect of its architecture. This module is organized as eight independent ranks. Each rank is a logically separate area of memory that the memory controller can access. The "x4" refers to the data width of the individual DRAM chips used on the module; specifically, they have 4 data I/O pins per chip. This x4 configuration is particularly beneficial for error correction, as it allows for stronger Chipkill error correction, which can correct a multi-bit error from a single DRAM chip failure. The octal rank structure allows for the high 128GB capacity but also places specific electrical load demands on the memory controller, making it essential to consult your server's memory configuration guide for supported population models.

Performance and Speed

PC4-21300 DDR4-2666MHz Speed

This module operates at a data rate of 2666 million transfers per second (MT/s), which is classified under the industry standard as PC4-21300. The "PC4" prefix denotes a DDR4 module, and the "21300" refers to the peak theoretical bandwidth in megabytes per second (MB/s). For a 64-bit wide channel, the calculation is 2666 MT/s * 8 bytes = ~21,328 MB/s, hence rounded to 21300. This high bandwidth is vital for applications that are sensitive to memory throughput, such as scientific simulations, financial modeling, and real-time data processing, ensuring that the CPU is fed with data as quickly as possible to maintain peak computational efficiency.

CAS Latency and Timings

While the primary speed is 2666MT/s, the module operates at a specific set of timings, including CAS Latency (CL). For this Hynix module, the CAS Latency is typically aligned with industry standards for DDR4-2666 registered ECC memory. These timings represent the number of clock cycles required for the memory to respond to a read request. A balance is struck between high speed (frequency) and low latency to provide optimal real-world performance. The precise timing values are programmed into the module's Serial Presence Detect (SPD) chip, allowing the system BIOS to automatically configure the memory controller for stable operation.

Advanced Memory Features and Technology

The Hynix HMABAGR7C4R4N-VN incorporates several advanced technologies that differentiate server memory from standard desktop memory. These features are non-negotiable for environments where data integrity and uptime are paramount.

Error Correcting Code (ECC) Functionality

ECC is a critical feature for any mission-critical server. Unlike non-ECC memory, which can only detect single-bit errors, ECC memory can both detect and correct single-bit errors. This happens transparently without any operating system or application intervention, preventing minor memory errors from causing system crashes, data corruption, or silent data errors. For multi-bit errors, ECC logic can detect them and halt the system to prevent corrupted data from propagating, a feature often referred to as "SDDC" (Single Device Data Correction) or "Chipkill" when paired with x4 DRAM chips, as found in this module.

Registered (Buffered) Design

RDIMM Architecture

This module is a Registered DIMM (RDIMM). It incorporates memory registers (or buffers) located between the system's memory controller and the DRAM chips. These registers buffer the command, address, and control signals, reducing the electrical load on the memory controller. This buffering allows a server to support a significantly greater number of memory modules per channel and to use higher-density modules like this 128GB unit without overloading the controller. While the registers introduce a minimal, fixed latency of one clock cycle, the benefit of increased capacity and stability far outweighs this negligible performance cost in a server environment.

Comparison with UDIMM and LRDIMM

It is important to distinguish RDIMMs from Unbuffered DIMMs (UDIMMs) and Load-Reduced DIMMs (LRDIMMs). UDIMMs have no buffering and are typically used in desktops and entry-level servers, supporting lower capacities per module. LRDIMMs use a different type of buffer that reduces the electrical load even further than RDIMMs, enabling the highest possible memory capacities in a system. The Hynix HMABAGR7C4R4N-VN, as an RDIMM, offers an optimal balance of performance, capacity, and cost for a wide range of enterprise servers.

Power Efficiency

The module operates at a standard DDR4 voltage of 1.2V. This is a significant reduction from the 1.5V or 1.35V used in older DDR3 technology. The lower voltage directly translates to reduced power consumption and heat generation, which is a major consideration for data centers focused on lowering their PUE (Power Usage Effectiveness) and overall operational costs. Despite its high capacity, the module is designed for power efficiency, contributing to a greener and more sustainable IT infrastructure.

Physical and Environmental Specifications

The physical construction of the memory module is designed for durability, reliable connectivity, and effective thermal management within the constrained space of a server chassis.

288-Pin RDIMM Form Factor

This module conforms to the standard 288-pin RDIMM form factor defined by JEDEC, the electronics industry standardization body. The physical layout of the pins, including the keying notch, is specifically designed to prevent insertion into an incompatible motherboard socket (e.g., a UDIMM or DDR3 slot). The 288-pin design supports the 64-bit data bus plus the additional signals required for ECC and registered functionality.

Wide Compatibility

Ensuring compatibility is the most critical step before deploying any server memory. The Hynix HMABAGR7C4R4N-VN is designed for broad compatibility but requires verification against specific system qualifications.

Server Platforms

This memory module is ideally suited for a wide range of enterprise-grade servers from major OEMs such as Dell EMC (PowerEdge series), HPE (ProLiant, Apollo series), Lenovo (ThinkSystem, System x), Cisco (UCS), and Supermicro. It is designed for platforms that utilize Intel Xeon Scalable processors (e.g., Skylake, Cascade Lake, and newer generations) or comparable AMD EPYC platforms that support DDR4-2666 RDIMMs. It is imperative to consult the server's technical documentation or memory compatibility list to confirm that this specific part number, density, and rank configuration is supported in the desired slot population.

Applications and Use Cases

The substantial capacity and robust reliability features of this memory module make it an ideal solution for a multitude of demanding computational tasks.

Enterprise Virtualization

In virtualized environments using VMware vSphere, Microsoft Hyper-V, or KVM, physical memory is a key resource that is allocated to multiple virtual machines (VMs). The 128GB capacity allows a single server to host a significantly larger number of VMs or more memory-intensive VMs, improving server consolidation ratios and maximizing return on investment. The ECC and registered features ensure the stability required for a multi-tenant environment where a single memory error could potentially affect numerous business-critical services.

In-Memory Databases and Analytics

Platforms like SAP HANA, Oracle Database In-Memory, and Microsoft SQL Server with In-Memory OLTP rely on storing vast datasets directly in RAM to achieve ultra-low query latency and high transaction throughput. The Hynix 128GB RDIMM is a fundamental building block for such systems, enabling them to hold larger working sets in memory and deliver real-time business intelligence and analytics.

High-Performance Computing (HPC) and AI/ML

Scientific computing, engineering simulations, financial modeling, and artificial intelligence/machine learning training workloads are often bottlenecked by memory bandwidth and capacity. Clusters built with servers utilizing these high-speed, high-capacity modules can process larger datasets and perform complex calculations more efficiently, reducing time-to-solution for researchers and data scientists.