HMA41GR7MFR8N-TF Hynix 8GB PC4-17000 DDR4 SDRAM 2133MHz Cl15 Ecc Registered RAM

• Manufacturer: Hynix
• Part Number: HMA41GR7MFR8N-TF
• Module Type: 8GB DDR4 SDRAM
• Bus Speed: 2133 MHz DDR4-2133 / PC4-17000

Technical Specifications

• Storage Capacity: 8GB
• Memory Type: DDR4 SDRAM
• Module Configuration: Single 8GB Module
• Data Integrity: ECC (Error-Correcting Code)
• Signal Processing: Registered
• CAS Latency: CL15
• Voltage: 1.2V
• Features: Dual Rank, Ultra Low Voltage

Hynix 8GB PC4-17000 Server Memory

The Hynix HMA41GR7MFR8N-TF represents a specific class of memory modules engineered for enterprise-grade computing environments where reliability, error correction, and consistent performance are non-negotiable. This 8GB DDR4 module is not your typical desktop RAM; it is a specialized component built to meet the rigorous demands of servers, workstations, and high-availability systems. Operating at a base frequency of 2133MHz with a CAS Latency of 15, this module is part of the PC4-17000 classification, ensuring robust data throughput for a wide array of critical applications.

Form Factor: PC4-17000

The Hynix HMA41GR7MFR8N-TF DDR4 SDRAM has a form factor of PC4-17000, ensuring compatibility and flexibility for various systems and configurations. The PC4-17000 form factor allows for flexible system configuration by supporting multiple memory module installations. Users can easily add or replace memory modules to meet their specific requirements, whether it's increasing overall memory capacity or optimizing system performance.

DDR4 SDRAM (Double Data Rate 4 Synchronous Dynamic Random-Access Memory) is the fourth generation of DDR memory technology, succeeding DDR3. It represents a significant evolutionary step, offering higher performance, greater bandwidth, and improved power efficiency. For server environments, the transition to DDR4 is crucial for supporting modern multi-core processors and handling intensive data workloads. The technological leap from DDR3 to DDR4 is substantial. DDR4 modules operate at lower voltages, typically 1.2V compared to DDR3's 1.5V, resulting in significantly reduced power consumption and heat generation—a critical factor in densely packed server racks. Furthermore, DDR4 supports higher native data rates, starting at 2133MHz and scaling beyond 3200MHz, which directly translates to increased system bandwidth and faster data processing capabilities.

Capacity: 8GB

As an 8GB module, the HMA41GR7MFR8N-TF provides a substantial amount of memory in a single slot. Server motherboards are designed with multiple DIMM slots, allowing for total system memory capacities to scale by populating these slots with identical modules. This 8GB density is often considered a sweet spot for general-purpose servers, offering a cost-effective balance between total system cost and available RAM.

Internal Organization: x4 vs. x8 DRAMs

The internal organization of the memory chips on the module, specifically whether they are x4 or x8 DRAMs, has important implications for memory rank configuration and error correction efficiency. The HMA41GR7MFR8N-TF typically utilizes x4 components. This configuration is advantageous for servers because it enables a more robust error correction scheme known as SDDC (Chipkill), which can correct a full DRAM chip failure, a level of reliability not possible with x8-based modules in the same rank configuration.

Error Correcting Code (ECC) Memory Explained

ECC memory includes extra bits (e.g., 8 bits for a 64-bit data word) and a specialized memory controller that can detect and correct the most common types of internal data corruption. Cosmic rays, electrical interference, and other factors can cause random bit flips in memory—a phenomenon that, while rare per bit, becomes statistically significant when dealing with terabytes of RAM across a data center. ECC works by storing an encrypted checksum with the data. When data is read, the checksum is recalculated and compared to the stored value. Single-bit errors are corrected on the fly without any performance penalty or system interruption, and multi-bit errors are detected, allowing the system to halt gracefully to prevent data corruption.

RDIMM vs. UDIMM A Clear Distinction

Unbuffered DIMMs (UDIMMs), common in desktops and laptops, have no such buffer. The memory controller communicates directly with the DRAM chips. While this results in slightly lower latency, it places a significant electrical load on the controller, limiting the number of modules that can be reliably installed on a single channel. Servers requiring large amounts of RAM (e.g., 128GB, 512GB, or more) must use RDIMMs or their load-reduced counterparts (LRDIMMs) to achieve these high densities stably. The Hynix HMA41GR7MFR8N-TF is an RDIMM, making it ideal for populating multi-slot server motherboards.

Reliability

Hynix is one of the world's leading semiconductor manufacturers, and their server memory modules are built to the highest standards. The HMA41GR7MFR8N-TF undergoes rigorous testing during production to ensure it meets stringent specifications for performance and reliability. These modules are designed for 24/7 operation under typical server room conditions. While warranty terms can vary depending on the distributor or reseller, genuine Hynix modules typically come with a limited lifetime warranty, providing long-term peace of mind for your infrastructure investment.

Compatibility

The PC4-17000 HMA41GR7MFR8N-TF form factor is widely compatible with a range of motherboards, making the Hynix DDR4 SDRAM suitable for both consumer and enterprise systems. Users can easily install the memory module without the need for additional adapters or modifications. Registered memory offers compatibility and scalability, making it an ideal choice for systems that require future expansions or upgrades. The Hynix DDR4 SDRAM provides a flexible solution that can adapt to changing needs without sacrificing stability or performance.