HMA42GR7MFR4NTF Hynix 16GB RAM DDR4 SDRAM PC4-17000 Cl15 Ecc Reg 2133MHZ

Hynix 16GB DDR4 Memory Module

DDR4 (Double Data Rate 4) represents the fourth generation of DDR SDRAM technology, offering significant improvements over its predecessor, DDR3. Server-grade DDR4 memory modules like the Hynix HMA42GR7MFR4NTF are specifically engineered for enterprise environments where reliability, performance, and data integrity are paramount. These modules operate at lower voltages (typically 1.2V compared to DDR3's 1.5V) while delivering higher data transfer rates, increased module densities, and enhanced signal integrity.

DDR4 Server Memory

DDR4 technology introduced several architectural improvements that benefit server environments. The Bank Groups architecture allows for more efficient memory access patterns, reducing latency when switching between different banks. The data transfer rates begin at 2133MT/s (million transfers per second), which is where the Hynix HMA42GR7MFR4NTF operates, with higher-speed variants reaching up to 3200MT/s and beyond. Additionally, DDR4 features improved command bus efficiency, better refresh algorithms, and enhanced data integrity features that are crucial for server applications.

Capacity: 16GB

The Hynix HMA42GR7MFR4NTF is a 16GB DDR4 module operating at a base frequency of 2133MHz. This frequency translates to a data transfer rate of 2133 million transfers per second (MT/s). The module's timing configuration is CL15 (CAS Latency 15), which represents the number of clock cycles between a read command and when the data becomes available. In the JEDEC naming convention, this module is classified as PC4-17000, indicating its peak transfer rate of approximately 17,000 MB/s (calculated as 2133 MHz × 8 bytes × 1 transfer per clock cycle).

Thermal Management

Form Factor and Physical Design

This memory module utilizes the standard 288-pin Dual In-line Memory Module (DIMM) form factor, which is specifically designed for DDR4 technology. The physical layout features a slightly curved edge connector that helps with insertion and reduces the likelihood of damage during installation. The module measures 133.35mm in length and follows the standard height specifications for server memory, ensuring compatibility with most server chassis and cooling solutions.

ECC and Registered Memory Technology

Error Correcting Code (ECC) is a critical feature in server memory that detects and corrects the most common types of data corruption. The Hynix HMA42GR7MFR4NTF implements single-error correction and double-error detection (SECDED) capabilities. This means the memory can automatically correct single-bit errors and detect double-bit errors, preventing these errors from causing system crashes or data corruption. ECC memory includes extra memory bits (typically 8 bits for every 64 bits of data) that store encrypted codes, allowing the memory controller to verify data integrity with each read operation.

Reliability

Hynix (now SK hynix) employs rigorous manufacturing processes and quality control measures in the production of their server memory modules. The HMA42GR7MFR4NTF undergoes comprehensive testing at multiple stages of production, including wafer-level testing, module-level testing, and system compatibility testing. These processes ensure that each module meets the specified performance characteristics and reliability standards. The modules are built using high-quality components and advanced PCB designs that optimize signal integrity and power delivery, contributing to long-term reliability in demanding server environments.

Enterprise Server Deployment

The Hynix HMA42GR7MFR4NTF is ideally suited for enterprise server environments where reliability and data integrity are critical. These include database servers running Oracle, SQL Server, or MySQL; application servers hosting business-critical applications; and file servers managing important organizational data. The ECC functionality protects against memory errors that could cause application crashes or data corruption, while the registered architecture ensures stable operation with large memory configurations.

RDIMM vs. UDIMM vs. LRDIMM Memory Types

When selecting server memory, it's important to understand the differences between Registered DIMMs (RDIMMs), Unbuffered DIMMs (UDIMMs), and Load Reduced DIMMs (LRDIMMs). The Hynix HMA42GR7MFR4NTF is an RDIMM, which offers a balance of performance, capacity, and cost for most server applications. UDIMMs lack the registering buffers, resulting in slightly lower latency but limited capacity support. LRDIMMs use additional buffering on the data lines as well, enabling even higher memory capacities but at a higher cost and with slightly increased latency. For most enterprise applications, RDIMMs represent the optimal choice.

Enhanced System Stability

DDR4 vs. DDR3 Memory

Compared to previous-generation DDR3 memory, DDR4 offers several advantages including higher data rates, improved power efficiency, and increased module densities. The Hynix HMA42GR7MFR4NTF operates at 1.2V compared to DDR3's typical 1.5V (or 1.35V for DDR3L), resulting in power savings that accumulate significantly in large server deployments. The architectural improvements in DDR4 also provide better scalability and signal integrity at higher frequencies. While DDR3 platforms may still be in use, new server deployments typically standardize on DDR4 technology for its performance and efficiency benefits.

Compatibility