Axiom 256MB 144-pin x32 DDR2-533 DIMM for HP - CB423A - 256 MB - DDR SDRAM - 400 MHz DDR2-400/PC2-3200 - Non-ECC - Unbuffered - 144-pin - SoDIMM

533 MHz of memory speed skillfully manages the variety of apps and computational tasks 256 MB of memory capacity optimizes your computer resources when you work on fewer applications DDR2 SDRAM interface multiplexes 2-bit data from memory cell and I/O buses to minimize processor idle time and enhance your computers performance