Processor performance refers to how efficiently a computer's central processing unit (CPU) executes instructions and processes data. It is typically measured in terms of clock speed, which is the number of cycles per second, and is expressed in gigahertz (GHz). Higher clock speeds generally indicate faster performance, but other factors, such as the number of cores and cache size, also play a significant role. Another important aspect of processor performance is its architecture, which determines how well the CPU can handle multiple tasks simultaneously. Modern processors often feature multiple cores, allowing them to perform several operations at once, improving overall efficiency. Additionally, advancements in technology, such as hyper-threading and multi-threading, further enhance performance by optimizing resource usage.