Toshiba 512MB PC2-5300 DDR2-667MHz Notebook Memory Module

It has long been known that more memory improves system performance - in fact, more memory can actually increase your battery life too. Other benefits of adding more memory include quicker start and the ability to run multiple programs simultaneously. Double Data Rate 2 (DDR2) memory offers maximum data transfer rate to improve the performance of memory intensive applications such as streaming video, graphics and CAD programs.