Final answer:
RISC CPUs have a smaller set of instructions and can often execute these at high speed, typically one clock cycle per instruction.
Step-by-step explanation:
When comparing RISC CPUs (Reduced Instruction Set Computing) and CISC CPUs (Complex Instruction Set Computing), it is important to consider their design philosophies and functionalities. RISC CPUs are designed to execute a smaller set of simple instructions at a high speed.
Typically using one clock cycle per instruction which can lead to better performance for certain tasks. In contrast, CISC CPUs are built to handle a larger set of more complex instructions, with some instructions taking multiple cycles to execute.
This means that RISC CPUs are generally more efficient when it comes to executing instructions due to their streamlined set of operations. However, CISC CPUs, like the Pentium chips mentioned that can execute more than 100 million instructions per second, are designed to accomplish more with individual instructions.