Final answer:
The full speed of a CPU is influenced by its clock speed, architecture, and instructions per second, with high-performance CPUs like a Pentium chip executing more than 100 million instructions per second.
Step-by-step explanation:
The full speed of a central processing unit (CPU) is typically determined by its clock speed, architecture, and the number of instructions it can execute per second. For instance, a Pentium chip from a 6-inch wafer being capable of executing million instructions per second indicates a high level of performance. The clock speed of a CPU, measured in gigahertz (GHz), along with its architecture and instruction set, influences how quickly it can process tasks.