The Corsair XMS2 4GB DDR2 RAM Memory TWIN2X4096-6400C5 PC2-4200UCD5 is a high-quality memory module designed for enhancing the performance of your computer. With a total capacity of 4GB split into two 2GB modules, this RAM provides ample memory for smooth operation. The DDR2 technology with a bus speed of PC2-4200 ensures faster data transfer, making it ideal for demanding tasks such as gaming, multimedia editing, and multitasking. Built by the trusted brand Corsair, this RAM is reliable and efficient for boosting your computer's speed and efficiency.