If you are not that familiar with computers, it's probably best to choose a selection from desktops with monitors because manufacturers have toned the components in some way to fit into each other. The best way to check this out is to go online and review what firms like Dell Computers offer, and, also the various computer outlet stores. Most of these stores sell computer packages from the manufacturers. The good point of buying a package that includes the desktop with monitor is that there is usually a warranty and service contract that covers both items.