The PQI 4GB (2x2GB) PC2-6400 Dual Channel Desktop Memory Ram is a high-quality memory module designed for desktop computers. This memory module features a total capacity of 4GB split into two 2GB modules, providing a dual-channel architecture for improved performance. With a bus speed of PC2-6400 (DDR2-800), this Crucial RAM is compatible with DDR2 memory slots and offers reliable, efficient performance for your computer system. Upgrade your desktop memory capacity with this dependable and efficient RAM module.