PCIe slots are available in a variety of configurations, including x1, x4, x8, & x16, which represent the number of data transfer lanes that are available. Because of its adaptability, users canhow to unlock yono sbi select the right slot for their expansion cards according to their performance needs. AGP offered a dedicated connection that enhanced performance for 3D rendering tasks and was created especially for graphics cards. But as technology developed & the need for more bandwidth grew, AGP was gradually replaced by PCIe, which provides much faster data transfer speeds and more flexibility.