Load multiple large spreadsheets, documents and graphic files faster with an additional 256MB of memory. 400MHz DDR2 memory technology provides up to a 20% improvement in peak memory bandwidth and average power savings over DDR memory. DDR2 memory operates faster and more efficiently than earlier generations of memory and increases the transfer rate beyond that of the typical front side bus (FSB) speed of the computer. New features that accompany DDR2 allow it to ramp up to much higher speeds while consuming less power