A computer has four main components: a CPU, a graphics processing unit (GPU), random access memory (RAM), and either a solid state drive (SSD) or a hard disk drive (HDD). All of these components are connected to a motherboard. Typically, the GPU and CPU comprise the computer’s chipset. The memory (RAM) and storage (SSD/HDD) components are typically easier to modify or replace than the chipset. Learn more about computers now.