HMA42GR7AFR4N-UH Hynix 16GB PC4-19200 ECC DDR4 SDRAM RAM

Hynix HMA42GR7AFR4N-UH Server Memory

The Hynix HMA42GR7AFR4N-UH represents a high-performance server-grade memory module engineered for demanding computational environments. This 16GB DDR4 module operates at 2400MHz (PC4-19200) with CAS Latency 17 timing, delivering substantial bandwidth of 19.2 GB/s per module. The 288-pin configuration ensures compatibility with modern server platforms requiring registered ECC memory for enhanced reliability and error correction capabilities.

Capacity: 16GB

ECC and Registered Features Explained

The ECC (Error Correction Code) functionality represents a critical feature for enterprise and server environments where data integrity is paramount. This module implements single-error correction and double-error detection (SECDED) capabilities, automatically identifying and correcting single-bit memory errors while detecting double-bit errors. This proactive error management prevents data corruption and system crashes that could result from soft memory errors caused by cosmic radiation, electrical interference, or component degradation.

Registered DIMM Advantages

As a Registered DIMM (RDIMM), this memory module includes a register between the memory controller and DRAM modules. This register buffers address, command, and control signals, reducing the electrical load on the memory controller and enabling support for higher memory capacities per channel. The registered design allows servers to populate more memory modules while maintaining signal integrity and system stability, making RDIMMs the preferred choice for multi-socket servers and memory-intensive applications.

2400MHz Operating Frequency

The 2400MHz data rate positions this module in the mid-range of DDR4 performance specifications, offering an optimal balance between speed, latency, and power consumption. With a true clock speed of 1200MHz, the DDR (Double Data Rate) technology enables data transfer on both the rising and falling edges of the clock signal, effectively doubling the transfer rate to 2400 million transfers per second.

Chipset and Processor Requirements

This memory module requires systems with DDR4-compatible memory controllers, typically found in Intel Xeon Scalable processors (Skylake, Cascade Lake, and newer generations) and AMD EPYC processors. The registered ECC functionality necessitates motherboard and chipset support for RDIMMs, which is standard in server-class platforms but generally unavailable on consumer-grade motherboards.

Reliability

Hynix HMA42GR7AFR4N-UH implements rigorous testing protocols throughout the manufacturing process, including wafer-level testing, module assembly verification, and comprehensive end-of-line testing. Each module undergoes automated testing for functionality, timing parameters, and thermal characteristics under various operating conditions. This extensive testing ensures consistent performance and reliability across production batches.

Scalability

thermal Management

This memory module is designed to operate within standard server environmental specifications, typically supporting temperatures from 0°C to 85°C. The module includes thermal sensors that enable proactive thermal management through system firmware, allowing for performance throttling if temperature thresholds are exceeded to prevent thermal-related damage or data corruption.

Enterprise Server Deployments

The Hynix HMA42GR7AFR4N-UH is ideally suited for general-purpose enterprise servers handling file sharing, print services, directory services, and application hosting. The module's reliability features ensure continuous operation with minimal unplanned downtime, while the 16GB density provides flexible configuration options for various workload requirements.

DDR4 Memory Technology Evolution

Compared to DDR3 memory, this DDR4 module offers significant improvements in performance, power efficiency, and capacity capabilities. The transition to 1.2V operation from DDR3's 1.5V standard reduces power consumption by approximately 20%, while the increased bank groups and prefetch improvements deliver higher effective bandwidth despite similar clock frequencies.

DDR3 Technology

Key DDR4 advancements include bank groups architecture for improved parallelism, data bus inversion for reduced power consumption during I/O operations, and more sophisticated training patterns for improved signal integrity at higher speeds. These architectural improvements collectively enhance both performance and reliability compared to previous memory generations.

Compatibility

The Hynix HMA42GR7AFR4N-UH is compatible with a wide range of enterprise server platforms from major manufacturers including Dell PowerEdge series (R740, R740xd, R640), HPE ProLiant servers (DL380 Gen10, DL360 Gen10), Lenovo Think System servers, and Super micro systems with compatible chipsets. The module's JEDEC-standard profile ensures mechanical and electrical compatibility with standard server memory slots.