The CPU is the engine of your computer and sets the performance expectations for the entire construct. Memory and storage fuel the processor, which controls each information transaction inside the PC. When you’re determining which CPU to put in, pay attention to the gigahertz – the higher the GHz, the faster the processor. However, more GHz also means the CPU consumes more power, which could result in higher system temperatures that require better airflow or warmth dissipation throughout the computer.