The Crucial PC2-6400 2 GB DIMM 800 MHz DDR2 SDRAM Memory is a reliable choice for upgrading your computer's memory capacity. With a total capacity of 2 GB split into 2 modules, this DDR2 RAM operates at a bus speed of 800Mhz, providing faster data transfer rates for improved performance. Crucial is a trusted brand known for producing high-quality memory modules, making this product a dependable option for enhancing your computer's speed and responsiveness.