So you want a computer, but you don't want the hassle of purchasing it from Dell, HP or Gateway, since they always want to sell you over priced upgrades or void your warranty for a memory upgrade. This is a good idea on your part you still retain a manufacturers warranty on each of the products you install to create your PC. These warranties extend typically as long as the manufacture warranty for a prebuilt from Dell. Ironic, not really Dell buys the same components you do and these components when they go out are returned to the manufacturer by dell.