Today the processor's speed is measured in?

Today, a processor's speed is primarily measured in gigahertz (GHz), which indicates the number of cycles per second that the processor can execute. Higher GHz values generally signify faster performance, but other factors like the number of cores, architecture efficiency, and cache size also play crucial roles in overall processing power. Additionally, benchmarks and performance metrics are used to assess a processor's real-world capabilities beyond just clock speed.