Double Data Rate Synchronous Dynamic Random-Access Memory (DDR SDRAM) data is read on both the rising and the falling edge of the computer clock, thereby delivering twice the bandwidth of standard SDRAM. With DDR SDRAM, memory speed doubles without increasing the clock frequency. Each module delivers a bandwidth of up to 2.1GB per second. Kingston's DDR SO-DIMMs enable enhanced system multimedia capabilities and increases headroom for memory-intensive applications. Since 1996, Toshiba America Information Systems, Inc., has used Kingston Technology as the official designer and manufacturer of NoteWorthy memory upgrades for Toshiba's entire line of portable and desktop personal computers. Kingston-NoteWorthy memory products are designed to meet the exact specification requirements of each system set by Toshiba.