Micron MT36HTF51272FY-667EYD6ES 4GB DDR2-667MHz FB-DIMM 2Rx4 Memory

Product Description

The Micron MT36HTF51272FY-667EYD6ES is a 4GB memory module belonging to the DDR2 generation, specifically designed in the Fully Buffered DIMM (FB-DIMM) form factor. FB-DIMMs were introduced to overcome the limitations of traditional unbuffered DIMMs in high-capacity server environments by incorporating an Advanced Memory Buffer (AMB) chip on the module itself. This buffer chip serializes data transfers between the memory controller and the DRAM chips, enabling higher clock speeds and greater memory capacities per channel, albeit often at the cost of increased power consumption and heat generation compared to later DDR generations. Operating at a speed of 667MHz (equivalent to PC2-5300F), this module provides a respectable data transfer rate for systems utilizing DDR2 memory technology. The 2Rx4 designation indicates that the module is dual-ranked and uses x4 (4-bit-wide) DRAM chips. Dual-rank modules can offer performance benefits by allowing the memory controller to access different ranks independently, potentially improving efficiency. The x4 DRAM configuration is common in server memory for achieving higher densities and ranks. This specific FB-DIMM is intended for use in servers and high-end workstations that were designed to support DDR2 FB-DIMMs. Its primary purpose is to expand the system's random-access memory, which is crucial for running multiple applications simultaneously, handling large datasets, and improving overall system responsiveness. While DDR2 FB-DIMMs are largely superseded by newer DDR technologies (DDR3, DDR4, DDR5) in modern systems, they were a critical component in server architectures of their era.