Hynix HYMP564U64AP8-Y5 AA 512MB DDR2-667MHz non-ECC Unbuffered

Product Description

The Hynix HYMP564U64AP8-Y5 AA is a 512 Megabyte (MB) memory module belonging to the DDR2 Synchronous Dynamic Random-Access Memory (SDRAM) family. DDR2 technology represented a significant step forward in memory performance, offering higher data transfer rates compared to the original DDR standard by utilizing both the rising and falling edges of the clock signal. This particular module operates at a frequency of 667MHz, commonly referred to as PC2-5300, indicating its peak theoretical bandwidth. The CAS Latency (CL) is rated at 5 clock cycles, which is a measure of the delay between the memory controller's request and the data being available from the memory chip. This module is designed as a Non-ECC (Non-Error-Correcting Code) and Unbuffered DIMM. Non-ECC memory is standard for most personal computers and workstations, where the system's architecture does not require built-in error correction capabilities. Unbuffered memory means that the data signals are passed directly from the memory controller to the memory chips without an intermediate register. This configuration is typical for standard desktop and laptop systems, though it may impose limitations on the total memory capacity and stability at very high densities compared to registered DIMMs (RDIMMs). With a capacity of 512MB, this Hynix DDR2 module is suitable for upgrading older computer systems or for use in specific applications where DDR2 memory is required. It is essential to verify system compatibility before installation, as DDR2 memory modules are not interchangeable with other DDR generations (DDR, DDR3, DDR4) due to differences in physical notches and electrical signaling. The HYMP564U64AP8-Y5 AA serves as a functional component for systems that require this specific type of memory for operation.