Speedup
Speedup, on the other hand, refers to the improvement in the performance time of a system compared to its previous state. Cache memory can also improve the speed of a computer by allowing the CPU to access data and instructions more quickly. By reducing the amount of time the CPU has to wait for data from main memory, it can the operations more quickly, resulting in a speedup of the overall system.
Speedup = 1/ (H/r)+(1-H)
Difference Between Efficiency and Speedup in Cache Memory
Pre-requisites: Cache Memory Performance
Cache memory can improve both the efficiency and speed of a computer by reducing the number of accesses to main memory and allowing the CPU to access data more quickly.