EDGE Tech 1GB DDR2 SDRAM Memory Module - 1GB (1 x 1GB) - 667MHz DDR2-667/PC2-5300 - Non-ECC - DDR2 SDRAM - 200-pin

667 MHz of memory speed with Unbuffered signal makes your computer great at multitasking 1 GB memory allows you to have more programs open at a time 200-pin-pin DDR2 SDRAM interface synchronizes electrical and clock signals for an efficient data transfer rate