Final answer:
Cache memory is crucial for speeding up the CPU's overall throughput by providing quick data access for frequently used information.
Step-by-step explanation:
Cache memory is the type of memory that helps speed up the overall throughput of the CPU. It is a smaller, faster type of volatile computer memory that provides high-speed data access to the CPU and stores frequently used programs, data, and instructions. Cache memory is significantly faster than using RAM (Random Access Memory), as it lies closer to the CPU and helps reduce the time it takes to access data from the main memory.