Hynix HYMP232S646-E3 AA 256MB (2 x 128MB) DDR2-400MHz PC2-3200 non-ECC

Product Description

The Hynix HYMP232S646-E3 AA is a memory kit comprising two 128MB DDR2 SODIMM modules, providing a total of 256MB of RAM. This configuration is intended for legacy systems, particularly older laptops or specialized devices, that require DDR2 memory with very modest capacity requirements. DDR2 SDRAM was a significant advancement over DDR1, offering higher clock speeds and improved power efficiency, though it is now considered obsolete technology. The 128MB capacity per module is indicative of the memory limitations of systems from the early to mid-2000s. Each module in this kit operates at a speed of 400MHz, which corresponds to the PC2-3200 standard, indicating a theoretical peak transfer rate of 3200 MB/s. The typical CAS Latency (CL) for DDR2-400MHz modules is CL3, meaning it takes three clock cycles for the memory controller to access a specific column of data. The configuration of each module is 128Mx8, meaning it contains 128 million bits organized in 8-bit data width. These modules are unbuffered, which is standard for SODIMMs used in consumer laptops, and Non-ECC, meaning they do not feature error correction capabilities. The standard operating voltage for DDR2 memory is 1.8V. This kit is suitable for systems that specifically require DDR2 SODIMM memory and have a maximum supported capacity that aligns with 256MB. It's important to note that DDR2 memory is not backward or forward compatible with DDR, DDR3, DDR4, or DDR5 memory modules due to physical and electrical differences. The Hynix HYMP232S646-E3 AA kit serves a niche purpose for maintaining or upgrading very old portable computing devices.