Hynix HYMP125F72CP8D3-S5-C 2GB DDR2-800MHz FB-DIMM 2Rx8 CL6 Memory

Product Description

The Hynix HYMP125F72CP8D3-S5-C is a 2GB memory module belonging to the DDR2 family, specifically designed in the FB-DIMM (Fully Buffered DIMM) form factor. FB-DIMMs were developed to overcome the electrical limitations of traditional DDR2 DIMMs, allowing for higher densities and speeds by placing an Advanced Memory Buffer (AMB) chip on the module itself. This AMB chip serializes data, reducing the electrical load on the memory controller and enabling systems to support more memory modules. The module operates at a clock speed of 800MHz, corresponding to a bandwidth of PC2-6400. The '2Rx8' designation indicates that the module is dual-ranked, meaning it has two independent sets of memory chips (ranks) accessible by the memory controller. Each rank consists of eight memory chips (x8 organization). Dual-ranked modules can offer performance benefits in certain scenarios due to the ability of the memory controller to interleave accesses between ranks. The CAS Latency (CL) of 6 signifies the number of clock cycles it takes for the memory module to respond to a column address strobe command, with lower latency generally indicating faster response times. This specific memory module is intended for use in servers and high-end workstations that are equipped with FB-DIMM slots. FB-DIMMs typically generate more heat than standard DIMMs due to the AMB chip, and often feature integrated heat spreaders. When upgrading or populating memory in systems that use FB-DIMMs, it is crucial to ensure compatibility with the motherboard and to follow the system's memory population guidelines, as FB-DIMM configurations can be sensitive. The 2GB capacity, while modest by today's standards, was common for server memory configurations during the DDR2 era.