Processor speed refers to how quickly a computer's central processing unit (CPU) can execute instructions. It is typically measured in gigahertz (GHz), with higher numbers indicating faster performance. A faster processor can handle more tasks simultaneously and improve the overall efficiency of a computer. Several factors influence processor speed, including the number of cores and the architecture of the CPU. Multi-core processors can perform multiple operations at once, enhancing multitasking capabilities. Additionally, advancements in technology, such as Intel and AMD innovations, continue to push the limits of processor speed, making computers faster and more powerful.