The CPU is the central processing unit, which is the central component in a computer. It's responsible for processing instructions and controlling the other components. Many include basic on-board graphics processors too so you can power a display without needing a separate graphics card. Intel has a wide range of models suited to different tasks and budgets. Choose from Celeron®, Pentium® Dual-Core, Intel® Core™ i3, Intel® Core™ i5 & Intel® Core™ i7 technologies. Before buying, ensure you've got a compatible motherboard.